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Pinto VM, Mazzi F, De Franceschi L. Novel therapeutic approaches in thalassemias, sickle cell disease, and other red cell disorders. Blood 2024; 144:853-866. [PMID: 38820588 DOI: 10.1182/blood.2023022193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 05/16/2024] [Accepted: 05/19/2024] [Indexed: 06/02/2024] Open
Abstract
ABSTRACT In this last decade, a deeper understanding of the pathophysiology of hereditary red cell disorders and the development of novel classes of pharmacologic agents have provided novel therapeutic approaches to thalassemias, sickle cell disease (SCD), and other red cell disorders. Here, we analyze and discuss the novel therapeutic options according to their targets, taking into consideration the complex process of erythroid differentiation, maturation, and survival of erythrocytes in the peripheral circulation. We focus on active clinical exploratory and confirmatory trials on thalassemias, SCD, and other red cell disorders. Beside β-thalassemia and SCD, we found that the development of new therapeutic strategies has allowed for the design of clinic studies for hereditary red cell disorders still lacking valuable therapeutic alternative such as α-thalassemias, congenital dyserythropoietic anemia, or Diamond-Blackfan anemia. In addition, reduction of heme synthesis, which can be achieved by the repurposed antipsychotic drug bitopertin, might affect not only hematological disorders but multiorgan diseases such as erythropoietic protoporphyria. Finally, our review highlights the current state of therapeutic scenarios, in which multiple indications targeting different red cell disorders are being considered for a single agent. This is a welcome change that will hopefully expand therapeutic option for patients affected by thalassemias, SCD, and other red cell disorders.
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Affiliation(s)
- Valeria Maria Pinto
- Ematologia e Terapie Cellulari, IRCCS Ospedale Policlinico San Martino, Genoa, Italy
- Centro della Microcitemia, Anemie Congenite e Dismetabolismo del Ferro, Ente Ospedaliero Ospedali Galliera, Genoa, Italy
| | - Filippo Mazzi
- Department of Medicine, Azienda Ospedaliera Universitaria Integrata di Verona, Verona, Italy
| | - Lucia De Franceschi
- Department of Medicine, Azienda Ospedaliera Universitaria Integrata di Verona, Verona, Italy
- Department of Engineering for Innovative Medicine, University of Verona, Verona, Italy
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2
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Guerra A, Hamilton N, Rivera A, Demsko P, Guo S, Rivella S. Combination of a TGF-β ligand trap (RAP-GRL) and TMPRSS6-ASO is superior for correcting β-thalassemia. Am J Hematol 2024; 99:1300-1312. [PMID: 38659383 PMCID: PMC11166515 DOI: 10.1002/ajh.27332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 03/11/2024] [Accepted: 03/22/2024] [Indexed: 04/26/2024]
Abstract
A recently approved drug that induces erythroid cell maturation (luspatercept) has been shown to improve anemia and reduce the need for blood transfusion in non-transfusion-dependent as well as transfusion-dependent β-thalassemia (BT) patients. Although these results were predominantly positive, not all the patients showed the expected increase in hemoglobin (Hb) levels or transfusion burden reduction. Additional studies indicated that administration of luspatercept in transfusion-dependent BT was associated with increased erythropoietic markers, decreased hepcidin levels, and increased liver iron content. Altogether, these studies suggest that luspatercept may necessitate additional drugs for improved erythroid and iron management. As luspatercept does not appear to directly affect iron metabolism, we hypothesized that TMPRSS6-ASO could improve iron parameters and iron overload when co-administered with luspatercept. We used an agent analogous to murine luspatercept (RAP-GRL) and another novel therapeutic, IONIS TMPRSS6-LRx (TMPRSS6-ASO), a hepcidin inducer, to treat non-transfusion-dependent BT-intermedia mice. Our study shows that RAP-GRL alone improved red blood cell (RBC) production, with no or limited effect on splenomegaly and iron parameters. In contrast, TMPRSS6-ASO improved RBC measurements, ameliorated splenomegaly, and improved iron overload most effectively. Our results provide pre-clinical support for combining TMPRSS6-ASO and luspatercept in treating BT, as these drugs together show potential for simultaneously improving both erythroid and iron parameters in BT patients.
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Affiliation(s)
- Amaliris Guerra
- Department of Pediatrics, Division of Hematology, The Children’s Hospital of Philadelphia (CHOP), Philadelphia, PA, USA
| | - Nolan Hamilton
- Department of Pediatrics, Division of Hematology, The Children’s Hospital of Philadelphia (CHOP), Philadelphia, PA, USA
| | - Ariel Rivera
- Department of Pediatrics, Division of Hematology, The Children’s Hospital of Philadelphia (CHOP), Philadelphia, PA, USA
| | - Perry Demsko
- Department of Pediatrics, Division of Hematology, The Children’s Hospital of Philadelphia (CHOP), Philadelphia, PA, USA
- University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, USA
- Cell and Molecular Biology affinity group (CAMB), University of Pennsylvania, Philadelphia, PA, USA
| | - Shuling Guo
- Ionis Pharmaceuticals, Inc., Carlsbad, CA, USA
| | - Stefano Rivella
- Department of Pediatrics, Division of Hematology, The Children’s Hospital of Philadelphia (CHOP), Philadelphia, PA, USA
- University of Pennsylvania, Perelman School of Medicine, Philadelphia, PA, USA
- Cell and Molecular Biology affinity group (CAMB), University of Pennsylvania, Philadelphia, PA, USA
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics-CHOP
- Penn Center for Musculoskeletal Disorders, CHOP, Philadelphia, PA, USA
- Institute for Regenerative Medicine, University of Pennsylvania, Philadelphia, PA, USA
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3
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Tanzi E, Di Modica SM, Bordini J, Olivari V, Pagani A, Furiosi V, Silvestri L, Campanella A, Nai A. Bone marrow Tfr2 deletion improves the therapeutic efficacy of the activin-receptor ligand trap RAP-536 in β-thalassemic mice. Am J Hematol 2024; 99:1313-1325. [PMID: 38629683 DOI: 10.1002/ajh.27336] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 04/02/2024] [Accepted: 04/06/2024] [Indexed: 06/12/2024]
Abstract
β-thalassemia is a disorder characterized by anemia, ineffective erythropoiesis (IE), and iron overload, whose treatment still requires improvement. The activin receptor-ligand trap Luspatercept, a novel therapeutic option for β-thalassemia, stimulates erythroid differentiation inhibiting the transforming growth factor β pathway. However, its exact mechanism of action and the possible connection with erythropoietin (Epo), the erythropoiesis governing cytokine, remain to be clarified. Moreover, Luspatercept does not correct all the features of the disease, calling for the identification of strategies that enhance its efficacy. Transferrin receptor 2 (TFR2) regulates systemic iron homeostasis in the liver and modulates the response to Epo of erythroid cells, thus balancing red blood cells production with iron availability. Stimulating Epo signaling, hematopoietic Tfr2 deletion ameliorates anemia and IE in Hbbth3/+ thalassemic mice. To investigate whether hematopoietic Tfr2 inactivation improves the efficacy of Luspatercept, we treated Hbbth3/+ mice with or without hematopoietic Tfr2 (Tfr2BMKO/Hbbth3/+) with RAP-536, the murine analog of Luspatercept. As expected, both hematopoietic Tfr2 deletion and RAP-536 significantly ameliorate IE and anemia, and the combined approach has an additive effect. Since RAP-536 has comparable efficacy in both Hbbth3/+ and Tfr2BMKO/Hbbth3/+ animals, we propose that the drug promotes erythroid differentiation independently of TFR2 and EPO stimulation. Notably, the lack of Tfr2, but not RAP-536, can also attenuate iron-overload and related complications. Overall, our results shed further light on the mechanism of action of Luspatercept and suggest that strategies aimed at inhibiting hematopoietic TFR2 might improve the therapeutic efficacy of activin receptor-ligand traps.
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Affiliation(s)
- Emanuele Tanzi
- Regulation of Iron Metabolism Unit, Division of Genetics and Cell Biology, IRCCS Ospedale San Raffaele, Milan, Italy
- Vita-Salute San Raffaele University, Milan, Italy
| | - Simona Maria Di Modica
- Regulation of Iron Metabolism Unit, Division of Genetics and Cell Biology, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Jessica Bordini
- Vita-Salute San Raffaele University, Milan, Italy
- B-cell Neoplasia Unit, Division of Experimental Oncology, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Violante Olivari
- Regulation of Iron Metabolism Unit, Division of Genetics and Cell Biology, IRCCS Ospedale San Raffaele, Milan, Italy
- Vita-Salute San Raffaele University, Milan, Italy
| | - Alessia Pagani
- Regulation of Iron Metabolism Unit, Division of Genetics and Cell Biology, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Valeria Furiosi
- Regulation of Iron Metabolism Unit, Division of Genetics and Cell Biology, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Laura Silvestri
- Regulation of Iron Metabolism Unit, Division of Genetics and Cell Biology, IRCCS Ospedale San Raffaele, Milan, Italy
- Vita-Salute San Raffaele University, Milan, Italy
| | - Alessandro Campanella
- Vita-Salute San Raffaele University, Milan, Italy
- B-cell Neoplasia Unit, Division of Experimental Oncology, IRCCS Ospedale San Raffaele, Milan, Italy
| | - Antonella Nai
- Regulation of Iron Metabolism Unit, Division of Genetics and Cell Biology, IRCCS Ospedale San Raffaele, Milan, Italy
- Vita-Salute San Raffaele University, Milan, Italy
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4
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Bozzini C, Busti F, Marchi G, Vianello A, Cerchione C, Martinelli G, Girelli D. Anemia in patients receiving anticancer treatments: focus on novel therapeutic approaches. Front Oncol 2024; 14:1380358. [PMID: 38628673 PMCID: PMC11018927 DOI: 10.3389/fonc.2024.1380358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Accepted: 03/19/2024] [Indexed: 04/19/2024] Open
Abstract
Anemia is common in cancer patients and impacts on quality of life and prognosis. It is typically multifactorial, often involving different pathophysiological mechanisms, making treatment a difficult task. In patients undergoing active anticancer treatments like chemotherapy, decreased red blood cell (RBC) production due to myelosuppression generally predominates, but absolute or functional iron deficiency frequently coexists. Current treatments for chemotherapy-related anemia include blood transfusions, erythropoiesis-stimulating agents, and iron supplementation. Each option has limitations, and there is an urgent need for novel approaches. After decades of relative immobilism, several promising anti-anemic drugs are now entering the clinical scenario. Emerging novel classes of anti-anemic drugs recently introduced or in development for other types of anemia include activin receptor ligand traps, hypoxia-inducible factor-prolyl hydroxylase inhibitors, and hepcidin antagonists. Here, we discuss their possible role in the treatment of anemia observed in patients receiving anticancer therapies.
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Affiliation(s)
- Claudia Bozzini
- Department of Medicine, Section of Internal Medicine, University of Verona, Verona, Italy
- EuroBloodNet Referral Center, Azienda Ospedaliera Universitaria Integrata Verona, Verona, Italy
| | - Fabiana Busti
- Department of Medicine, Section of Internal Medicine, University of Verona, Verona, Italy
- EuroBloodNet Referral Center, Azienda Ospedaliera Universitaria Integrata Verona, Verona, Italy
| | - Giacomo Marchi
- Department of Medicine, Section of Internal Medicine, University of Verona, Verona, Italy
- EuroBloodNet Referral Center, Azienda Ospedaliera Universitaria Integrata Verona, Verona, Italy
| | - Alice Vianello
- Department of Medicine, Section of Internal Medicine, University of Verona, Verona, Italy
- EuroBloodNet Referral Center, Azienda Ospedaliera Universitaria Integrata Verona, Verona, Italy
| | - Claudio Cerchione
- Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Romagnolo per lo Studio dei Tumori (IRST) “Dino Amadori”, Meldola, Italy
| | - Giovanni Martinelli
- Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Istituto Romagnolo per lo Studio dei Tumori (IRST) “Dino Amadori”, Meldola, Italy
| | - Domenico Girelli
- Department of Medicine, Section of Internal Medicine, University of Verona, Verona, Italy
- EuroBloodNet Referral Center, Azienda Ospedaliera Universitaria Integrata Verona, Verona, Italy
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5
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Chen CC, Lee TL, Tsai IT, Hsuan CF, Hsu CC, Wang CP, Lu YC, Lee CH, Chung FM, Lee YJ, Wei CT. Tissue Expression of Growth Differentiation Factor 11 in Patients with Breast Cancer. Diagnostics (Basel) 2024; 14:701. [PMID: 38611614 PMCID: PMC11011301 DOI: 10.3390/diagnostics14070701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 03/09/2024] [Accepted: 03/25/2024] [Indexed: 04/14/2024] Open
Abstract
Protein growth differentiation factor 11 (GDF11) plays crucial roles in cellular processes, including differentiation and development; however, its clinical relevance in breast cancer patients is poorly understood. We enrolled 68 breast cancer patients who underwent surgery at our hospital and assessed the expression of GDF11 in tumorous, ductal carcinoma in situ (DCIS), and non-tumorous tissues using immunohistochemical staining, with interpretation based on histochemical scoring (H-score). Our results indicated higher GDF11 expressions in DCIS and normal tissues compared to tumorous tissues. In addition, the GDF11 H-score was lower in the patients with a tumor size ≥ 2 cm, pathologic T3 + T4 stages, AJCC III-IV stages, Ki67 ≥ 14% status, HER2-negative, and specific molecular tumor subtypes. Notably, the patients with triple-negative breast cancer exhibited a loss of GDF11 expression. Spearman correlation analysis revealed associations between GDF11 expression and various clinicopathological characteristics, including tumor size, stage, Ki67, and molecular subtypes. Furthermore, GDF11 expression was positively correlated with mean corpuscular hemoglobin concentration and negatively correlated with neutrophil count, as well as standard deviation and coefficient of variation of red cell distribution width. These findings suggest that a decreased GDF11 expression may play a role in breast cancer pathogenesis.
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Affiliation(s)
- Chia-Chi Chen
- Department of Pathology, E-Da Hospital, I-Shou University, Kaohsiung 82445, Taiwan; (C.-C.C.); (C.-H.L.)
- School of Medicine, College of Medicine, I-Shou University, Kaohsiung 82445, Taiwan; (I.-T.T.); (C.-F.H.)
- Department of Physical Therapy, I-Shou University, Kaohsiung 82445, Taiwan
- Department of Occupational Therapy, I-Shou University, Kaohsiung 82445, Taiwan
| | - Thung-Lip Lee
- Division of Cardiology, Department of Internal Medicine, E-Da Hospital, I-Shou University, Kaohsiung 82445, Taiwan; (T.-L.L.); (C.-P.W.); (F.-M.C.)
- School of Medicine for International Students, College of Medicine, I-Shou University, Kaohsiung 82445, Taiwan
| | - I-Ting Tsai
- School of Medicine, College of Medicine, I-Shou University, Kaohsiung 82445, Taiwan; (I.-T.T.); (C.-F.H.)
- Department of Emergency, E-Da Hospital, I-Shou University, Kaohsiung 82445, Taiwan
| | - Chin-Feng Hsuan
- School of Medicine, College of Medicine, I-Shou University, Kaohsiung 82445, Taiwan; (I.-T.T.); (C.-F.H.)
- Division of Cardiology, Department of Internal Medicine, E-Da Hospital, I-Shou University, Kaohsiung 82445, Taiwan; (T.-L.L.); (C.-P.W.); (F.-M.C.)
- Division of Cardiology, Department of Internal Medicine, E-Da Dachang Hospital, I-Shou University, Kaohsiung 80794, Taiwan
| | - Chia-Chang Hsu
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, E-Da Hospital, I-Shou University, Kaohsiung 82445, Taiwan;
- Health Examination Center, E-Da Dachang Hospital, I-Shou University, Kaohsiung 80794, Taiwan
- The School of Chinese Medicine for Post Baccalaureate, College of Medicine, I-Shou University, Kaohsiung 82445, Taiwan
| | - Chao-Ping Wang
- Division of Cardiology, Department of Internal Medicine, E-Da Hospital, I-Shou University, Kaohsiung 82445, Taiwan; (T.-L.L.); (C.-P.W.); (F.-M.C.)
- School of Medicine for International Students, College of Medicine, I-Shou University, Kaohsiung 82445, Taiwan
| | - Yung-Chuan Lu
- Division of Endocrinology and Metabolism, Department of Internal Medicine, E-Da Hospital, I-Shou University, Kaohsiung 82445, Taiwan;
| | - Chien-Hsun Lee
- Department of Pathology, E-Da Hospital, I-Shou University, Kaohsiung 82445, Taiwan; (C.-C.C.); (C.-H.L.)
| | - Fu-Mei Chung
- Division of Cardiology, Department of Internal Medicine, E-Da Hospital, I-Shou University, Kaohsiung 82445, Taiwan; (T.-L.L.); (C.-P.W.); (F.-M.C.)
| | - Yau-Jiunn Lee
- Lee’s Endocrinologic Clinic, Pingtung 90000, Taiwan;
| | - Ching-Ting Wei
- The School of Chinese Medicine for Post Baccalaureate, College of Medicine, I-Shou University, Kaohsiung 82445, Taiwan
- Division of General Surgery, Department of Surgery, E-Da Hospital, I-Shou University, Kaohsiung 82445, Taiwan
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6
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Shao Y, He L, Ding S, Fu R. Luspatercept for the treatment of congenital sideroblastic anemia: Two case reports. Curr Res Transl Med 2024; 72:103438. [PMID: 38244303 DOI: 10.1016/j.retram.2024.103438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Accepted: 01/02/2024] [Indexed: 01/22/2024]
Abstract
Congenital sideroblastic anemia (CSA) is a group of disorders caused by different genetic mutations that result in low iron utilization and ineffective erythropoiesis. Current treatments are limited, and some patients do not respond to vitamin B6 therapy. Luspatercept is a novel erythropoietic maturation agent approved for adult β-thalassemia and Myelodysplastic syndromes with ring sideroblasts (MDS-RS) associated with ineffective erythropoiesis. Here we report 2 patients with CSA due to mutations in ALAS2 and SLC25A38 genes who became unresponsive after a period of treatment with vitamin B6 and iron chelators but achieved transfusion independence and a markedly reduced spleen after combination with luspatercept.
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Affiliation(s)
- Yuanyuan Shao
- Department of Hematology, Tianjin Medical University General Hospital, No. 154, Anshan Road, Heping District, Tianjin 300052, China
| | - Li He
- Department of Hematology, Tianjin Medical University General Hospital, No. 154, Anshan Road, Heping District, Tianjin 300052, China
| | - Shaoxue Ding
- Department of Hematology, Tianjin Medical University General Hospital, No. 154, Anshan Road, Heping District, Tianjin 300052, China
| | - Rong Fu
- Department of Hematology, Tianjin Medical University General Hospital, No. 154, Anshan Road, Heping District, Tianjin 300052, China.
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7
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Garbowski MW, Ugidos M, Risueño A, Shetty JK, Schwickart M, Hermine O, Porter JB, Thakurta A, Vodala S. Luspatercept stimulates erythropoiesis, increases iron utilization, and redistributes body iron in transfusion-dependent thalassemia. Am J Hematol 2024; 99:182-192. [PMID: 37782758 DOI: 10.1002/ajh.27102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 09/06/2023] [Accepted: 09/09/2023] [Indexed: 10/04/2023]
Abstract
Luspatercept, a ligand-trapping fusion protein, binds select TGF-β superfamily ligands implicated in thalassemic erythropoiesis, promoting late-stage erythroid maturation. Luspatercept reduced transfusion burden in the BELIEVE trial (NCT02604433) of 336 adults with transfusion-dependent thalassemia (TDT). Analysis of biomarkers in BELIEVE offers novel physiological and clinical insights into benefits offered by luspatercept. Transfusion iron loading rates decreased 20% by 1.4 g (~7 blood units; median iron loading rate difference: -0.05 ± 0.07 mg Fe/kg/day, p< .0001) and serum ferritin (s-ferritin) decreased 19.2% by 269.3 ± 963.7 μg/L (p < .0001), indicating reduced macrophage iron. However, liver iron content (LIC) did not decrease but showed statistically nonsignificant increases from 5.3 to 6.7 mg/g dw. Erythropoietin, growth differentiation factor 15, soluble transferrin receptor 1 (sTfR1), and reticulocytes rose by 93%, 59%, 66%, and 112%, respectively; accordingly, erythroferrone increased by 51% and hepcidin decreased by 53% (all p < .0001). Decreased transfusion with luspatercept in patients with TDT was associated with increased erythropoietic markers and decreasing hepcidin. Furthermore, s-ferritin reduction associated with increased erythroid iron incorporation (marked by sTfR1) allowed increased erythrocyte marrow output, consequently reducing transfusion needs and enhancing rerouting of hemolysis (heme) iron and non-transferrin-bound iron to the liver. LIC increased in patients with intact spleens, consistent with iron redistribution given the hepcidin reduction. Thus, erythropoietic and hepcidin changes with luspatercept in TDT lower transfusion dependency and may redistribute iron from macrophages to hepatocytes, necessitating the use of concomitant chelator cover for effective iron management.
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Affiliation(s)
- Maciej W Garbowski
- UCL Cancer Institute Hematology Department, University College London, University College London Hospitals, London, UK
| | - Manuel Ugidos
- BMS Center for Innovation and Translational Research Europe (CITRE), Bristol Myers Squibb, Seville, Spain
| | - Alberto Risueño
- BMS Center for Innovation and Translational Research Europe (CITRE), Bristol Myers Squibb, Seville, Spain
| | - Jeevan K Shetty
- Celgene International Sàrl a Bristol-Myers Squibb Company, Boudry, Switzerland
| | | | - Olivier Hermine
- Necker Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France
- Imagine Institute, INSERM Unité 1163, University of Paris, Paris, France
| | - John B Porter
- UCL Cancer Institute Hematology Department, University College London, University College London Hospitals, London, UK
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8
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Nai A, Cordero-Sanchez C, Tanzi E, Pagani A, Silvestri L, Di Modica SM. Cellular and animal models for the investigation of β-thalassemia. Blood Cells Mol Dis 2024; 104:102761. [PMID: 37271682 DOI: 10.1016/j.bcmd.2023.102761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 05/24/2023] [Accepted: 05/26/2023] [Indexed: 06/06/2023]
Abstract
β-Thalassemia is a genetic form of anemia due to mutations in the β-globin gene, that leads to ineffective and extramedullary erythropoiesis, abnormal red blood cells and secondary iron-overload. The severity of the disease ranges from mild to lethal anemia based on the residual levels of globins production. Despite being a monogenic disorder, the pathophysiology of β-thalassemia is multifactorial, with different players contributing to the severity of anemia and secondary complications. As a result, the identification of effective therapeutic strategies is complex, and the treatment of patients is still suboptimal. For these reasons, several models have been developed in the last decades to provide experimental tools for the study of the disease, including erythroid cell lines, cultures of primary erythroid cells and transgenic animals. Years of research enabled the optimization of these models and led to decipher the mechanisms responsible for globins deregulation and ineffective erythropoiesis in thalassemia, to unravel the role of iron homeostasis in the disease and to identify and validate novel therapeutic targets and agents. Examples of successful outcomes of these analyses include iron restricting agents, currently tested in the clinics, several gene therapy vectors, one of which was recently approved for the treatment of most severe patients, and a promising gene editing strategy, that has been shown to be effective in a clinical trial. This review provides an overview of the available models, discusses pros and cons, and the key findings obtained from their study.
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Affiliation(s)
- Antonella Nai
- Regulation of Iron Metabolism Unit, Division of Genetics and Cell Biology, IRCCS Ospedale San Raffaele, via Olgettina 60, Milan, Italy; Vita-Salute San Raffaele University, via Olgettina 58, Milan, Italy.
| | - Celia Cordero-Sanchez
- Regulation of Iron Metabolism Unit, Division of Genetics and Cell Biology, IRCCS Ospedale San Raffaele, via Olgettina 60, Milan, Italy
| | - Emanuele Tanzi
- Regulation of Iron Metabolism Unit, Division of Genetics and Cell Biology, IRCCS Ospedale San Raffaele, via Olgettina 60, Milan, Italy
| | - Alessia Pagani
- Regulation of Iron Metabolism Unit, Division of Genetics and Cell Biology, IRCCS Ospedale San Raffaele, via Olgettina 60, Milan, Italy
| | - Laura Silvestri
- Regulation of Iron Metabolism Unit, Division of Genetics and Cell Biology, IRCCS Ospedale San Raffaele, via Olgettina 60, Milan, Italy; Vita-Salute San Raffaele University, via Olgettina 58, Milan, Italy
| | - Simona Maria Di Modica
- Regulation of Iron Metabolism Unit, Division of Genetics and Cell Biology, IRCCS Ospedale San Raffaele, via Olgettina 60, Milan, Italy
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9
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Shao Y, Liu T, Wen X, Zhang R, Liu X, Xing D. The regulatory effect of growth differentiation factor 11 on different cells. Front Immunol 2023; 14:1323670. [PMID: 38143761 PMCID: PMC10739301 DOI: 10.3389/fimmu.2023.1323670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 11/20/2023] [Indexed: 12/26/2023] Open
Abstract
Growth differentiation factor 11 (GDF11) is one of the important factors in the pathophysiological process of animals. It is widely expressed in many tissues and organs of animals, showing its wide biological activity and potential application value. Previous research has demonstrated that GDF11 has a therapeutic effect on various diseases, such as anti-myocardial aging and anti-tumor. This has not only sparked intense interest and enthusiasm among academics but also spurred some for-profit businesses to attempt to develop GDF11 as a medication for regenerative medicine or anti-aging application. Currently, Sotatercept, a GDF11 antibody drug, is in the marketing application stage, and HS-235 and rGDF11 are in the preclinical research stage. Therefore, we believe that figuring out which cells GDF11 acts on and its current problems should be an important issue in the scientific and commercial communities. Only through extensive, comprehensive research and discussion can we better understand the role and potential of GDF11, while avoiding unnecessary risks and misinformation. In this review, we aimed to summarize the role of GDF11 in different cells and its current controversies and challenges, providing an important reference for us to deeply understand the function of GDF11 and formulate more effective treatment strategies in the future.
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Affiliation(s)
- Yingchun Shao
- The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
- Qingdao Cancer Institute, Qingdao, China
| | - Ting Liu
- The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
- Qingdao Cancer Institute, Qingdao, China
| | - Xiaobo Wen
- The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
- Qingdao Cancer Institute, Qingdao, China
| | - Renshuai Zhang
- The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
- Qingdao Cancer Institute, Qingdao, China
| | - Xinlin Liu
- The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
- Qingdao Cancer Institute, Qingdao, China
| | - Dongming Xing
- The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, China
- Qingdao Cancer Institute, Qingdao, China
- School of Life Sciences, Tsinghua University, Beijing, China
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10
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Petzer V, Wolf D. [Recent findings in myelodysplastic syndrome]. Dtsch Med Wochenschr 2023; 148:1431-1436. [PMID: 37918427 DOI: 10.1055/a-1968-3106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2023]
Abstract
Myelodysplastic syndromes (MDS) represent a heterogeneous group of myeloid disorders characterized by peripheral blood cytopenias and increased risk of transformation to acute myeloid leukemia (AML).Recent developments include the classification and the estimation of prognosis. In 2022 the former 2016 WHO classification was replaced by the ICC and WHO 2022 classification. Both classifications have included precursor lesions (CHIP and ICUS), both distinguish between three molecularly cytogenetically defined subgroups - del(5q), TP53, SF3B1 - and morphologically defined subgroups with differences in blast threshold (WHO: 20%; ICC: 10%) for the differentiation from AML. However, although prognostic factors influenced the classification-subgroups, it is important to distinguish the prognosis, which is crucial for optimal therapeutic decision making. Since 2022, the IPSS-M has been available for this purpose, which represents an expansion of the well-established IPSS-R. It could improve prognosis estimation by adding molecular data, recently this could have been confirmed in real world cohorts. The IPSS-M also represents an important extension with regard to prognosis estimation for patients with therapy-related MDS.In 2020 Luspatercept has been approved for transfusion-dependent lower risk MDS patients harboring ring sideroblasts ± an SF3B1 mutation after failure of an erythropoiesis stimulating agent. The COMMANDS trial has just reported an interim analysis, where the superiority of luspatercept in the 1st line compared to erythropoietin could be demonstrated. In addition, data from the phase III trial with Imeltelstat give reason to hope that we will be able to offer a new second-line therapy to LR-MDS patients. For higher risk MDS patients azacitidine therapy remains the standard of care, results of phase III trials of combination therapies must be awaited.
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11
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Guerra A, Parhiz H, Rivella S. Novel potential therapeutics to modify iron metabolism and red cell synthesis in diseases associated with defective erythropoiesis. Haematologica 2023; 108:2582-2593. [PMID: 37345473 PMCID: PMC10542825 DOI: 10.3324/haematol.2023.283057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Accepted: 06/15/2023] [Indexed: 06/23/2023] Open
Abstract
Under normal conditions, iron metabolism is carefully regulated to sustain normal cellular functions and the production of hemoglobin in erythroid cells. Perturbation to the erythropoiesis-iron metabolism axis can result in iron imbalances and cause anemia or organ toxicity. Various congenital and acquired diseases associated with abnormal red cell production are characterized by aberrant iron absorption. Several recent studies have shown that improvements in red blood cell production also ameliorate iron metabolism and vice versa. Many therapeutics are now under development with the potential to improve a variety of hematologic diseases, from β-thalassemia and iron-refractory iron deficiency anemia to anemia of inflammation and polycythemia vera. This review summarizes selected mechanisms related to red cell production and iron metabolism and describes potential therapeutics and their current uses. We also consider the potential application of the discussed therapeutics on various diseases, alone or in combination. The vast repertoire of drugs under development offers new opportunities to improve the clinical care of patients suffering from congenital or acquired red blood cell disorders with limited or no treatment options.
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Affiliation(s)
- Amaliris Guerra
- Department of Pediatrics, Division of Hematology, The Children's Hospital of Philadelphia (CHOP), Philadelphia, PA
| | - Hamideh Parhiz
- Department of Pediatrics, Division of Hematology, The Children's Hospital of Philadelphia (CHOP), Philadelphia, PA, USA; RNA Institute, University of Pennsylvania, Philadelphia, PA
| | - Stefano Rivella
- Department of Pediatrics, Division of Hematology, The Children's Hospital of Philadelphia (CHOP), Philadelphia, PA, USA; Department of Pediatrics, Division of Hematology, The Children's Hospital of Philadelphia (CHOP), Philadelphia, PA, USA; RNA Institute, University of Pennsylvania, Philadelphia, PA, USA; Cell and Molecular Biology affinity group (CAMB), University of Pennsylvania, Philadelphia, PA, USA; Raymond G. Perelman Center for Cellular and Molecular Therapeutics-CHOP; Penn Center for Musculoskeletal Disorders, CHOP, Philadelphia, PA, USA; Institute for Regenerative Medicine, University of Pennsylvania, Philadelphia, PA.
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12
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Lan Z, Lv Z, Zuo W, Xiao Y. From bench to bedside: The promise of sotatercept in hematologic disorders. Biomed Pharmacother 2023; 165:115239. [PMID: 37516019 DOI: 10.1016/j.biopha.2023.115239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2023] [Revised: 07/24/2023] [Accepted: 07/25/2023] [Indexed: 07/31/2023] Open
Abstract
Sotatercept (ACE-011) is an activin receptor IIA-Fc (ActRIIA-Fc) fusion protein currently under investigation for its potential in the treatment of hematologic diseases. By impeding the activities of the overexpressed growth and differentiation factor 11 (GDF11), activin A, and other members of the transforming growth factor-β (TGF-β) superfamily, commonly found in hematologic disorders, sotatercept aims to restore the normal functioning of red blood cell maturation and osteoblast differentiation. This action is anticipated to enhance anemia management and hinder the progression of myeloma. Simultaneously, comprehensive research is ongoing to investigate sotatercept's pharmacokinetics and potential adverse reactions, thus laying a robust foundation for its prospective clinical use. In this review, we provide a detailed overview of TGF-β pathways in physiological and hematologic disorder contexts, outline the potential mechanism of sotatercept, and delve into its pharmacokinetics and clinical research advancements in various hematologic diseases. A particular emphasis is given to the relationship between sotatercept dosage and its efficacy or associated adverse reactions.
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Affiliation(s)
- Zehao Lan
- Department of Cardiovascular Medicine, Second Xiangya Hospital of Central South University, Changsha 410011, China; Xiangya School of Medicine, Central South University, Changsha 410013, China
| | - Zhaohua Lv
- Department of Cardiovascular Medicine, Second Xiangya Hospital of Central South University, Changsha 410011, China; Xiangya School of Medicine, Central South University, Changsha 410013, China
| | - Wanyun Zuo
- Department of Hematology, Second Xiangya Hospital of Central South University, Changsha 410011, China
| | - Yichao Xiao
- Department of Cardiovascular Medicine, Second Xiangya Hospital of Central South University, Changsha 410011, China.
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13
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Sheth S, Taher AT, Coates TD, Kattamis A, Cappellini MD. Management of luspatercept therapy in patients with transfusion-dependent β-thalassaemia. Br J Haematol 2023; 201:824-831. [PMID: 37037668 DOI: 10.1111/bjh.18801] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 03/23/2023] [Accepted: 03/28/2023] [Indexed: 04/12/2023]
Abstract
Patients with transfusion-dependent β-thalassaemia require lifelong, regular red blood cell transfusions for survival; however, frequent blood transfusions are associated with an increased risk of iron overload, transfusion-transmitted disease and alloimmunization, as well as reduced quality of life. Luspatercept, an erythroid maturation agent that promotes late-stage erythroid maturation independently of erythropoietin, has demonstrated efficacy in reducing transfusion burden in patients with transfusion-dependent β-thalassaemia. In this review, we discuss treatment initiation, ongoing evaluation, dose adjustment and management of adverse events in transfusion-dependent patients with β-thalassaemia receiving luspatercept, and we provide guidance on how to determine whether patients are deriving clinical benefit.
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Affiliation(s)
- Sujit Sheth
- Division of Pediatric Hematology/Oncology, Weill Cornell Medicine, New York, New York, USA
| | - Ali T Taher
- Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Thomas D Coates
- Cancer and Blood Disease Institute, Children's Hospital Los Angeles and USC Keck School of Medicine, Los Angeles, California, USA
| | - Antonis Kattamis
- First Department of Pediatrics, National and Kapodistrian University of Athens, Athens, Greece
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14
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Musallam KM, Taher AT, Kattamis A, Kuo KHM, Sheth S, Cappellini MD. Profile of Luspatercept in the Treatment of Anemia in Adults with Non-Transfusion-Dependent β-Thalassemia (NTDT): Design, Development and Potential Place in Therapy. Drug Des Devel Ther 2023; 17:1583-1591. [PMID: 37255740 PMCID: PMC10226484 DOI: 10.2147/dddt.s368584] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 05/20/2023] [Indexed: 06/01/2023] Open
Abstract
Over the past decade, evidence has been mounting on the detrimental clinical sequelae of untreated anemia in patients with non-transfusion-dependent β-thalassemia (NTDT). There are no pharmacologic agents that are specifically approved for the management of anemia in NTDT, and available options such as splenectomy, transfusion therapy, and hydroxyurea each come with their own shortcomings, especially for long-term use. Luspatercept is an erythroid maturation agent that has been evaluated in a Phase 2, randomized trial and showed a significant benefit in raising hemoglobin level by at least 1 g/dL in adults with NTDT and a baseline hemoglobin level ≤10 g/dL. These data led to luspatercept's approval by the European Commission for the treatment of anemia in adults with NTDT and presents the first evidence-based approach for a novel agent that is able to ameliorate anemia in this patient population.
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Affiliation(s)
- Khaled M Musallam
- Thalassemia Center, Burjeel Medical City, Abu Dhabi, United Arab Emirates
| | - Ali T Taher
- Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Antonis Kattamis
- First Department of Pediatrics, National and Kapodistrian University of Athens, Athens, Greece
| | - Kevin H M Kuo
- Division of Hematology, University of Toronto, Toronto, ON, Canada
| | - Sujit Sheth
- Division of Hematology and Oncology, Department of Pediatrics, Weill Cornell Medicine, New York, NY, USA
| | - Maria Domenica Cappellini
- Department of Clinical Sciences and Community, University of Milan, Ca’ Granda Foundation IRCCS Maggiore Policlinico Hospital, Milan, Italy
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15
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Rodrigues F, Coman T, Fouquet G, Côté F, Courtois G, Trovati Maciel T, Hermine O. A deep dive into future therapies for microcytic anemias and clinical considerations. Expert Rev Hematol 2023; 16:349-364. [PMID: 37092971 DOI: 10.1080/17474086.2023.2206556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2023]
Abstract
INTRODUCTION Microcytic anemias (MA) have frequent or rare etiologies. New discoveries in understanding and treatment of microcytic anemias need to be reviewed. AREAS COVERED Microcytic anemias with a focus on most frequent causes and on monogenic diseases that are relevant for understanding biocellular mechanisms of MA. All treatments excepting gene therapy, with a focus on recent advances. Pubmed search with references selected by expert opinion. EXPERT OPINION As the genetic and cellular background of dyserythropoiesis will continue to be clarified, collaboration with bioengineering of treatments acting specifically at the protein domain level will continue to provide new therapies in haematology as well as oncology and neurology.
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Affiliation(s)
- François Rodrigues
- Université de Paris, service d'hématologie adultes, Hôpital Necker - Enfants Malades, Asrsistance Publique- Hôpitaux de Paris, France
- Inserm U1163, CNRS ERL8254 Imagine Institute, Paris, France
| | - Tereza Coman
- Inserm U1163, CNRS ERL8254 Imagine Institute, Paris, France
- Département d'hématologie, Institut Gustave Roussy, Villejuif, France
| | - Guillemette Fouquet
- Université de Paris, service d'hématologie adultes, Hôpital Necker - Enfants Malades, Asrsistance Publique- Hôpitaux de Paris, France
- Hématologie clinique, Centre Hospitalier Sud Francilien, Corbeil Essonnes, France
| | - Francine Côté
- Inserm U1163, CNRS ERL8254 Imagine Institute, Paris, France
| | | | | | - Olivier Hermine
- Université de Paris, service d'hématologie adultes, Hôpital Necker - Enfants Malades, Asrsistance Publique- Hôpitaux de Paris, France
- Inserm U1163, CNRS ERL8254 Imagine Institute, Paris, France
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16
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Bou-Fakhredin R, Rivella S, Cappellini MD, Taher AT. Pathogenic Mechanisms in Thalassemia I: Ineffective Erythropoiesis and Hypercoagulability. Hematol Oncol Clin North Am 2023; 37:341-351. [PMID: 36907607 DOI: 10.1016/j.hoc.2022.12.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Abstract
Erythropoiesis is the physiological process that results in the production of red blood cells (RBCs). In conditions of pathologically altered erythropoiesis or ineffective erythropoiesis, as in the case of β-thalassemia, the reduced ability of erythrocytes to differentiate, survive and deliver oxygen stimulates a state of stress that leads to the ineffective production of RBCs. We herein describe the main features of erythropoiesis and its regulation in addition to the mechanisms behind ineffective erythropoiesis development in β-thalassemia. Finally, we review the pathophysiology of hypercoagulability and vascular disease development in β-thalassemia and the currently available prevention and treatment modalities.
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Affiliation(s)
- Rayan Bou-Fakhredin
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Stefano Rivella
- Division of Hematology, Department of Pediatrics, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Maria Domenica Cappellini
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy; UOC General Medicine, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Ali T Taher
- Division of Hematology-Oncology, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon.
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17
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Upton PD, Dunmore BJ, Li W, Morrell NW. An emerging class of new therapeutics targeting TGF, Activin, and BMP ligands in pulmonary arterial hypertension. Dev Dyn 2023; 252:327-342. [PMID: 35434863 PMCID: PMC10952790 DOI: 10.1002/dvdy.478] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 03/21/2022] [Accepted: 04/07/2022] [Indexed: 11/10/2022] Open
Abstract
Pulmonary arterial hypertension (PAH) is an often fatal condition, the primary pathology of which involves loss of pulmonary vascular perfusion due to progressive aberrant vessel remodeling. The reduced capacity of the pulmonary circulation places increasing strain on the right ventricle of the heart, leading to death by heart failure. Currently, licensed therapies are primarily vasodilators, which have increased the median post-diagnosis life expectancy from 2.8 to 7 years. Although this represents a substantial improvement, the search continues for transformative therapeutics that reverse established disease. The genetics of human PAH heavily implicates reduced endothelial bone morphogenetic protein (BMP) signaling as a causal role for the disease pathobiology. Recent approaches have focused on directly enhancing BMP signaling or removing the inhibitory influence of pathways that repress BMP signaling. In this critical commentary, we review the evidence underpinning the development of two approaches: BMP-based agonists and inhibition of activin/GDF signaling. We also address the key considerations and questions that remain regarding these approaches.
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Affiliation(s)
- Paul D. Upton
- Department of MedicineUniversity of Cambridge School of Clinical Medicine, Addenbrooke's and Royal Papworth HospitalsCambridgeUK
| | - Benjamin J. Dunmore
- Department of MedicineUniversity of Cambridge School of Clinical Medicine, Addenbrooke's and Royal Papworth HospitalsCambridgeUK
| | - Wei Li
- Department of MedicineUniversity of Cambridge School of Clinical Medicine, Addenbrooke's and Royal Papworth HospitalsCambridgeUK
| | - Nicholas W. Morrell
- Department of MedicineUniversity of Cambridge School of Clinical Medicine, Addenbrooke's and Royal Papworth HospitalsCambridgeUK
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18
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Cappellini MD, Taher AT, Verma A, Shah F, Hermine O. Erythropoiesis in lower-risk myelodysplastic syndromes and beta-thalassemia. Blood Rev 2022; 59:101039. [PMID: 36577601 DOI: 10.1016/j.blre.2022.101039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 12/15/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022]
Abstract
The hematologic disorders myelodysplastic syndromes and beta-thalassemia are characterized by ineffective erythropoiesis and anemia, often managed with regular blood transfusions. Erythropoiesis, the process by which sufficient numbers of functional erythrocytes are produced from hematopoietic stem cells, is highly regulated, and defects can negatively affect the proliferation, differentiation, and survival of erythroid precursors. Treatments that directly target the underlying mechanisms of ineffective erythropoiesis are limited, and management of anemia with regular blood transfusions imposes a significant burden on patients, caregivers, and health care systems. There is therefore a strong unmet need for treatments that can restore effective erythropoiesis. Novel therapies are beginning to address this need by targeting a variety of mechanisms underlying erythropoiesis. Herein, we provide an overview of the role of ineffective erythropoiesis in myelodysplastic syndromes and beta-thalassemia, discuss unmet needs in targeting ineffective erythropoiesis, and describe current management strategies and emerging treatments for these disorders.
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Affiliation(s)
| | - Ali T Taher
- Department of Internal Medicine, American University of Beirut Medical Center, Halim and Aida Daniel Academic and Clinical Center, Beirut, Lebanon.
| | - Amit Verma
- Albert Einstein College of Medicine, New York, NY, USA.
| | - Farrukh Shah
- Department of Haematology, Whittington Health NHS Trust, London, UK.
| | - Olivier Hermine
- Department of Hematology, Hôpital Necker, Assistance Publique Hôpitaux de Paris, University Paris Cité, Paris, France; INSERM U1163 and CNRS 8254, Imagine Institute, Université Sorbonne Paris Cité, Paris, France.
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19
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Alashkar F, Klump H, Lange CP, Proske P, Schüssler M, Yamamoto R, Carpinteiro A, Berliner CA, Schlosser TW, Röth A, Reinhardt HC. Luspatercept, a two-edged sword in beta-thalassemia-associated paravertebral extramedullary hematopoietic masses (EHMs). Eur J Haematol 2022; 109:664-671. [PMID: 36045599 DOI: 10.1111/ejh.13849] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2022] [Revised: 08/21/2022] [Accepted: 08/23/2022] [Indexed: 01/19/2023]
Abstract
Paravertebral extramedullary hematopoietic masses (EHMs) account for up to 15% of extramedullary pseudotumors in beta-thalassemia (BT) and are most likely related to compensatory hematopoiesis. In most cases, pseudotumors are incidentally detected, as the majority of patients are asymptomatic. Since June 2020, luspatercept is approved for the treatment of patients with BT who require regular red blood cell transfusions. Data addressing the safety and efficacy of luspatercept in patients with BT-associated EHMs are pending. To date (May 2022), paravertebral EHMs were observed in two asymptomatic patients out of currently 43 adult patients with BT registered at the Adult Hemoglobinopathy Outpatient Unit of the University Hospital Essen, Germany. In one of them, a paravertebral EHM was diagnosed for more than 10 years prior to referral. Throughout observation time, treatment with luspatercept was associated with a clinically significant reduction in transfusion burden while allowing to maintain a baseline hemoglobin concentration of ≥10 g/dl aiming to suppress endogenous (ineffective) erythropoiesis associated with BT. Considering the rarity of paravertebral EHMs in BT, luspatercept might potentially represent a novel therapeutic option for these often-serious disease-associated complications. However, appropriate follow-up investigations are recommended to detect (early) treatment failures secondary to an undesired luspatercept-associated erythroid expansion.
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Affiliation(s)
- Ferras Alashkar
- Department of Hematology and Stem Cell Transplantation, West German Cancer Center, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Hannes Klump
- Institute of Transfusion Medicine, University Hospital Essen, Germany
| | - Cara Paulina Lange
- Department of Hematology and Stem Cell Transplantation, West German Cancer Center, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Pia Proske
- Department of Hematology and Stem Cell Transplantation, West German Cancer Center, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Maximilian Schüssler
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | | | - Alexander Carpinteiro
- Department of Hematology and Stem Cell Transplantation, West German Cancer Center, University Hospital Essen, University of Duisburg-Essen, Essen, Germany.,Institute for Molecular Biology, University of Duisburg-Essen, Essen, Germany
| | | | - Thomas Wilfried Schlosser
- Institute of Diagnostic and Interventional Radiology and Neuroradiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Alexander Röth
- Department of Hematology and Stem Cell Transplantation, West German Cancer Center, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Hans Christian Reinhardt
- Department of Hematology and Stem Cell Transplantation, West German Cancer Center, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
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20
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Weidner H, Wobus M, Hofbauer LC, Rauner M, Platzbecker U. Luspatercept mitigates bone loss driven by myelodysplastic neoplasms and estrogen-deficiency in mice. Leukemia 2022; 36:2715-2718. [PMID: 36175549 PMCID: PMC9613459 DOI: 10.1038/s41375-022-01702-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/29/2022] [Accepted: 09/06/2022] [Indexed: 01/19/2023]
Affiliation(s)
- Heike Weidner
- grid.4488.00000 0001 2111 7257 Department of Medicine III and Center for Healthy Aging, Technische Universität Dresden, Dresden, Germany
| | - Manja Wobus
- grid.4488.00000 0001 2111 7257Department of Medicine I, Technische Universität Dresden, Dresden, Germany
| | - Lorenz C. Hofbauer
- grid.4488.00000 0001 2111 7257 Department of Medicine III and Center for Healthy Aging, Technische Universität Dresden, Dresden, Germany ,grid.7497.d0000 0004 0492 0584German Cancer Consortium (DKTK), partner site Dresden and German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Martina Rauner
- grid.4488.00000 0001 2111 7257 Department of Medicine III and Center for Healthy Aging, Technische Universität Dresden, Dresden, Germany
| | - Uwe Platzbecker
- German Cancer Consortium (DKTK), partner site Dresden and German Cancer Research Center (DKFZ), Heidelberg, Germany. .,Medical Clinic and Policlinic I, Hematology and Cellular Therapy, University Hospital Leipzig, Leipzig, Germany.
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21
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Ineffective erythropoiesis and its treatment. Blood 2021; 139:2460-2470. [PMID: 34932791 DOI: 10.1182/blood.2021011045] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 11/29/2021] [Accepted: 11/29/2021] [Indexed: 01/19/2023] Open
Abstract
The erythroid marrow and circulating red blood cells (RBCs) are the key components of the human erythron. Abnormalities of the erythron that are responsible for anemia can be distinguished into 3 major categories, that is, erythroid hypoproliferation, ineffective erythropoiesis, and peripheral hemolysis. Ineffective erythropoiesis is characterized by erythropoietin-driven expansion of early-stage erythroid precursors, associated with apoptosis of late-stage precursors. This mechanism is primarily responsible for anemia in inherited disorders like β-thalassemia, inherited sideroblastic anemias, and congenital dyserythropoietic anemias, as well as in acquired conditions like some subtypes of myelodysplastic syndromes (MDS). The inherited anemias due to ineffective erythropoiesis are also defined as iron loading anemias because of the associated parenchymal iron loading caused by the release of erythroid factors that suppress hepcidin production. Novel treatments specifically targeting ineffective erythropoiesis are being developed. Iron restriction through enhancement of hepcidin activity or inhibition of ferroportin function has been shown to reduce ineffective erythropoiesis in murine models of β-thalassemia. Luspatercept is a TGF-β ligand trap that inhibits SMAD2/3 signaling. Based on pre-clinical and clinical studies, this compound is now approved for the treatment of anemia in adult patients with β-thalassemia who require regular RBC transfusions. Luspatercept is also approved for the treatment of transfusion-dependent anemia in patients with MDS with ring sideroblasts, most of whom carry a somatic SF3B1mutation. While long-term efficacy and safety of luspatercept need to be evaluated both in β-thalassemia and MDS, defining the molecular mechanisms of ineffective erythropoiesis in different disorders might allow the discovery of new effective compounds.
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22
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Bose P, Verstovsek S. SOHO State of the Art Updates and Next Questions: Identifying and Treating "Progression" in Myelofibrosis. CLINICAL LYMPHOMA, MYELOMA & LEUKEMIA 2021; 21:641-649. [PMID: 34272171 PMCID: PMC8565615 DOI: 10.1016/j.clml.2021.06.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 06/07/2021] [Accepted: 06/14/2021] [Indexed: 01/19/2023]
Abstract
Over the last decade, the Janus kinase (JAK) 1/2 inhibitor ruxolitinib has become widely established as the cornerstone of pharmacologic therapy for most patients with myelofibrosis (MF), providing dramatic and durable benefits in terms of splenomegaly and symptoms, and prolonging survival. Ruxolitinib does not address all aspects of the disease, however; notably cytopenias, and its ability to modify the underlying biology of the disease remains in question. Furthermore, patients eventually lose response to ruxolitinib. Multiple groups have reported the median overall survival of MF patients after ruxolitinib discontinuation to be 13 to 14 months. While consensus criteria only recognize splenic and blast progression as "progressive disease" in patients with MF, disease progression can occur in a variety of ways. Besides increasing splenomegaly and progression to accelerated phase/leukemic transformation, patients may develop worsening disease-related symptoms, cytopenias, progressive leukocytosis, extramedullary hematopoiesis, etc. As in the frontline setting, treatment needs to be tailored to the clinical needs of the patient. Current treatment options for patients with MF who fail ruxolitinib remain unsatisfactory, and this continues to represent an area of major unmet medical need. The regulatory approval of fedratinib has introduced an important option in the postruxolitinib setting. Fortunately, a plethora of novel agents, both new JAK inhibitors and drugs from other classes, eg, bromodomain and extraterminal (BET), murine double minute 2 (MDM2) and telomerase inhibitors, activin receptor ligand traps, BH3-mimetics and more, are poised to greatly expand the therapeutic armamentarium for patients with MF if successful in pivotal trials.
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Affiliation(s)
- Prithviraj Bose
- Department of Leukemia, University of Texas MD Anderson Cancer Center, Houston, TX.
| | - Srdan Verstovsek
- Department of Leukemia, University of Texas MD Anderson Cancer Center, Houston, TX
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23
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Levy G, Mambet C, Pecquet C, Bailly S, Havelange V, Diaconu CC, Constantinescu SN. Targets in MPNs and potential therapeutics. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2021; 366:41-81. [PMID: 35153006 DOI: 10.1016/bs.ircmb.2021.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Philadelphia-negative classical Myeloproliferative Neoplasms (MPNs), including Polycythemia Vera (PV), Essential Thrombocythemia (ET) and Primary Myelofibrosis (PMF), are clonal hemopathies that emerge in the hematopoietic stem cell (HSC) compartment. MPN driver mutations are restricted to specific exons (14 and 12) of Janus kinase 2 (JAK2), thrombopoietin receptor (MPL/TPOR) and calreticulin (CALR) genes, are involved directly in clonal myeloproliferation and generate the MPN phenotype. As a result, an increased number of fully functional erythrocytes, platelets and leukocytes is observed in the peripheral blood. Nevertheless, the complexity and heterogeneity of MPN clinical phenotypes cannot be solely explained by the type of driver mutation. Other factors, such as additional somatic mutations affecting epigenetic regulators or spliceosomes components, mutant allele burdens and modifiers of signaling by driver mutants, clonal architecture and the order of mutation acquisition, signaling events that occur downstream of a driver mutation, the presence of specific germ-line variants, the interaction of the neoplastic clone with bone marrow microenvironment and chronic inflammation, all can modulate the disease phenotype, influence the MPN clinical course and therefore, might be useful therapeutic targets.
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Affiliation(s)
- Gabriel Levy
- Ludwig Institute for Cancer Research, Brussels, Belgium; SIGN Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium; Department of Pediatric Hematology and Oncology, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, Brussels, Belgium
| | - Cristina Mambet
- Department of Cellular and Molecular Pathology, Stefan S. Nicolau Institute of Virology, Bucharest, Romania; Department of Hematology, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
| | - Christian Pecquet
- Ludwig Institute for Cancer Research, Brussels, Belgium; SIGN Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium; WELBIO (Walloon Excellence in Life Sciences and Biotechnology), Brussels, Belgium
| | - Sarah Bailly
- Ludwig Institute for Cancer Research, Brussels, Belgium; SIGN Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium; Department of Hematology, Cliniques Universitaires Saint Luc, Université Catholique de Louvain, Brussels, Belgium
| | - Violaine Havelange
- SIGN Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium; Department of Hematology, Cliniques Universitaires Saint Luc, Université Catholique de Louvain, Brussels, Belgium
| | - Carmen C Diaconu
- Department of Cellular and Molecular Pathology, Stefan S. Nicolau Institute of Virology, Bucharest, Romania
| | - Stefan N Constantinescu
- Ludwig Institute for Cancer Research, Brussels, Belgium; SIGN Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium; WELBIO (Walloon Excellence in Life Sciences and Biotechnology), Brussels, Belgium; Ludwig Institute for Cancer Research, Nuffield Department of Medicine, Oxford University, Oxford, United Kingdom.
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Sinha S, Pereira-Reis J, Guerra A, Rivella S, Duarte D. The Role of Iron in Benign and Malignant Hematopoiesis. Antioxid Redox Signal 2021; 35:415-432. [PMID: 33231101 PMCID: PMC8328043 DOI: 10.1089/ars.2020.8155] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Revised: 10/26/2020] [Accepted: 11/20/2020] [Indexed: 12/21/2022]
Abstract
Significance: Iron is an essential element required for sustaining a normal healthy life. However, an excess amount of iron in the bloodstream and tissue generates toxic hydroxyl radicals through Fenton reactions. Henceforth, a balance in iron concentration is extremely important to maintain cellular homeostasis in both normal hematopoiesis and erythropoiesis. Iron deficiency or iron overload can impact hematopoiesis and is associated with many hematological diseases. Recent Advances: The mechanisms of action of key iron regulators such as erythroferrone and the discovery of new drugs, such as ACE-536/luspatercept, are of potential interest to treat hematological disorders, such as β-thalassemia. New therapies targeting inflammation-induced ineffective erythropoiesis are also in progress. Furthermore, emerging evidences support differential interactions between iron and its cellular antioxidant responses of hematopoietic and neighboring stromal cells. Both iron and its systemic regulator, such as hepcidin, play a significant role in regulating erythropoiesis. Critical Issues: Significant pre-clinical studies are on the way and new drugs targeting iron metabolism have been recently approved or are undergoing clinical trials to treat pathological conditions with impaired erythropoiesis such as myelodysplastic syndromes or β-thalassemia. Future Directions: Future studies should explore how iron regulates hematopoiesis in both benign and malignant conditions. Antioxid. Redox Signal. 35, 415-432.
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Affiliation(s)
- Sayantani Sinha
- Division of Hematology, Department of Pediatrics, The Children's Hospital of Philadelphia (CHOP), Philadelphia, Pennsylvania, USA
| | - Joana Pereira-Reis
- Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Porto, Portugal
| | - Amaliris Guerra
- Division of Hematology, Department of Pediatrics, The Children's Hospital of Philadelphia (CHOP), Philadelphia, Pennsylvania, USA
| | - Stefano Rivella
- Division of Hematology, Department of Pediatrics, The Children's Hospital of Philadelphia (CHOP), Philadelphia, Pennsylvania, USA
- Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
- Cell and Molecular Biology Affinity Group (CAMB), University of Pennsylvania, Philadelphia, Pennsylvania, USA
- Raymond G. Perelman Center for Cellular and Molecular Therapeutics, The Children's Hospital of Philadelphia (CHOP), Philadelphia, Pennsylvania, USA
- Penn Center for Musculoskeletal Disorders, The Children's Hospital of Philadelphia (CHOP), Philadelphia, Pennsylvania, USA
| | - Delfim Duarte
- Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Porto, Portugal
- Department of Onco-Hematology, Instituto Português de Oncologia (IPO), Porto, Portugal
- Unit of Biochemistry, Department of Biomedicine, Faculdade de Medicina da Universidade do Porto (FMUP), Porto, Portugal
- Porto Comprehensive Cancer Center (P.CCC), Porto, Portugal
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Ineffective Erythropoiesis in β-Thalassaemia: Key Steps and Therapeutic Options by Drugs. Int J Mol Sci 2021; 22:ijms22137229. [PMID: 34281283 PMCID: PMC8268821 DOI: 10.3390/ijms22137229] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/29/2021] [Accepted: 06/30/2021] [Indexed: 01/19/2023] Open
Abstract
β-thalassaemia is a rare genetic condition caused by mutations in the β-globin gene that result in severe iron-loading anaemia, maintained by a detrimental state of ineffective erythropoiesis (IE). The role of multiple mechanisms involved in the pathophysiology of the disease has been recently unravelled. The unbalanced production of α-globin is a major source of oxidative stress and membrane damage in red blood cells (RBC). In addition, IE is tightly linked to iron metabolism dysregulation, and the relevance of new players of this pathway, i.e., hepcidin, erythroferrone, matriptase-2, among others, has emerged. Advances have been made in understanding the balance between proliferation and maturation of erythroid precursors and the role of specific factors in this process, such as members of the TGF-β superfamily, and their downstream effectors, or the transcription factor GATA1. The increasing understanding of IE allowed for the development of a broad set of potential therapeutic options beyond the current standard of care. Many candidates of disease-modifying drugs are currently under clinical investigation, targeting the regulation of iron metabolism, the production of foetal haemoglobin, the maturation process, or the energetic balance and membrane stability of RBC. Overall, they provide tools and evidence for multiple and synergistic approaches that are effectively moving clinical research in β-thalassaemia from bench to bedside.
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Schulz F, Nachtkamp K, Kasprzak A, Gattermann N, Haas R, Germing U. Luspatercept as a therapy for myelodysplastic syndromes with ring sideroblasts. Expert Rev Hematol 2021; 14:509-516. [PMID: 34161752 DOI: 10.1080/17474086.2021.1947791] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
INTRODUCTION Myelodysplastic syndromes (MDS) are a heterogeneous group of hematopoietic stem cell diseases characterized by cell dysplasia, ineffective hematopoiesis and risk of transformation to acute myeloid leukemia (AML). The median age of 75 years at diagnosis is associated with the presence of comorbidities, which preclude intensive therapies like allogeneic hematopoietic stem cell transplantation in most MDS patients. Risk stratification using the (Revised) International Prognostic Scoring System (IPSS/IPSS-R) is necessary to plan individualized treatment. AREAS COVERED Luspatercept (ACE-536), a specific activin receptor fusion protein, promotes late-stage erythropoiesis. Two clinical trials, PACE-MDS (phase 2) and MEDALIST (phase 3), yielded positive results in terms of improved hemoglobin levels and loss of transfusion dependence, with hardly any side effects. A phase 3 trial to compare luspatercept to ESAs (COMMANDS study) is ongoing. EXPERT OPINION Luspatercept is a promising alternative to ESAs for a subset of transfusion-dependent patients with lower risk MDS, namely those with a sideroblastic phenotype who are either not suitable for or have already failed erythropoietin-based treatment. The favorable safety profile and convenient subcutaneous administration every 3 weeks are more conducive to patients' quality of life than chronic red blood cell transfusion therapy.
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Affiliation(s)
- Felicitas Schulz
- Department of Hematology, Oncology and Clinical Immunology, University Hospital Düsseldorf, Düsseldorf, Germany
| | - Kathrin Nachtkamp
- Department of Hematology, Oncology and Clinical Immunology, University Hospital Düsseldorf, Düsseldorf, Germany
| | - Annika Kasprzak
- Department of Hematology, Oncology and Clinical Immunology, University Hospital Düsseldorf, Düsseldorf, Germany
| | - Norbert Gattermann
- Department of Hematology, Oncology and Clinical Immunology, University Hospital Düsseldorf, Düsseldorf, Germany
| | - Rainer Haas
- Department of Hematology, Oncology and Clinical Immunology, University Hospital Düsseldorf, Düsseldorf, Germany
| | - Ulrich Germing
- Department of Hematology, Oncology and Clinical Immunology, University Hospital Düsseldorf, Düsseldorf, Germany
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The use of luspatercept for thalassemia in adults. Blood Adv 2021; 5:326-333. [PMID: 33570654 DOI: 10.1182/bloodadvances.2020002725] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Accepted: 12/01/2020] [Indexed: 01/19/2023] Open
Abstract
Luspatercept is an activin receptor ligand trap that has been shown to enhance late-stage erythropoiesis in animal models of β-thalassemia. A multicenter, international, phase 2 dose-finding study was initiated in adult patients with β-thalassemia, either non-transfusion-dependent thalassemia (NTDT) or transfusion-dependent thalassemia (TDT). Positive results of the phase 2 study paved the way to a randomized phase 3 clinical trial (BELIEVE) to assess the efficacy and safety of luspatercept. The BELIEVE trial is a randomized, double-blind, placebo-controlled phase 3 trial. Three hundred thirty-six patients aged ≥18 years with TDT (regularly transfused, 6-20 red blood cell units within 24 weeks before randomization) were included in the trial. Patients received luspatercept or placebo subcutaneously every 21 days for ≥48 weeks and best supportive care. Forty-eight of 224 patients (21.4%) in the luspatercept group achieved the primary end points (≥33% reduction in transfusion burden) compared with those in the placebo group (4.5%; P < .001). Moreover, more patients had a ≥33% reduction in transfusion burden during any rolling 12-week interval (70.5% vs 29.5%) or any 24-week interval (41.1% vs 2.7%) with luspatercept than with the placebo. Transfusion independence was achieved by 11% of patients in the luspatercept group. Transient adverse events were more frequent with luspatercept than with placebo, but were manageable. Luspatercept was approved by the US Food and Drug Administration in 2019 and by the European Medicines Agency in 2020. The luspatercept trial is registered on www.clinicaltrials.gov at #NCT01749540 and the BELIEVE trial at #NCT02604433.
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28
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EnvIRONmental Aspects in Myelodysplastic Syndrome. Int J Mol Sci 2021; 22:ijms22105202. [PMID: 34068996 PMCID: PMC8156755 DOI: 10.3390/ijms22105202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/06/2021] [Accepted: 05/11/2021] [Indexed: 11/24/2022] Open
Abstract
Systemic iron overload is multifactorial in patients suffering from myelodysplastic syndrome (MDS). Disease-immanent ineffective erythropoiesis together with chronic red blood cell transfusion represent the main underlying reasons. However, like the genetic heterogeneity of MDS, iron homeostasis is also diverse in different MDS subtypes and can no longer be generalized. While a certain amount of iron and reactive oxygen species (ROS) are indispensable for proper hematological output, both are harmful if present in excess. Consequently, iron overload has been increasingly recognized as an important player in MDS, which is worth paying attention to. This review focuses on iron- and ROS-mediated effects in the bone marrow niche, their implications for hematopoiesis and their yet unclear involvement in clonal evolution. Moreover, we provide recent insights into hepcidin regulation in MDS and its interaction between erythropoiesis and inflammation. Based on Tet methylcytosine dioxygenase 2 (TET2), representing one of the most frequently mutated genes in MDS, leading to disturbances in both iron homeostasis and hematopoiesis, we highlight that different genetic alteration may have different implications and that a comprehensive workup is needed for a complete understanding and development of future therapies.
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29
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Motta I, Bou-Fakhredin R, Taher AT, Cappellini MD. Beta Thalassemia: New Therapeutic Options Beyond Transfusion and Iron Chelation. Drugs 2021; 80:1053-1063. [PMID: 32557398 PMCID: PMC7299245 DOI: 10.1007/s40265-020-01341-9] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Hemoglobinopathies are among the most common monogenic diseases worldwide. Approximately 1–5% of the global population are carriers for a genetic thalassemia mutation. The thalassemias are characterized by autosomal recessive inherited defects in the production of hemoglobin. They are highly prevalent in the Mediterranean, Middle East, Indian subcontinent, and East and Southeast Asia. Due to recent migrations, however, the thalassemias are now becoming more common in Europe and North America, making this disease a global health concern. Currently available conventional therapies in thalassemia have many challenges and limitations. A better understanding of the pathophysiology of β-thalassemia in addition to key developments in optimizing transfusion programs and iron-chelation therapy has led to an increase in the life span of thalassemia patients and paved the way for new therapeutic strategies. These can be classified into three categories based on their efforts to address different features of the underlying pathophysiology of β-thalassemia: correction of the globin chain imbalance, addressing ineffective erythropoiesis, and improving iron overload. In this review, we provide an overview of the novel therapeutic approaches that are currently in development for β-thalassemia.
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Affiliation(s)
- Irene Motta
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy.,Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Rayan Bou-Fakhredin
- Division of Hematology and Oncology, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Ali T Taher
- Division of Hematology and Oncology, Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon
| | - Maria Domenica Cappellini
- Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy. .,Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
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30
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Lodberg A. Principles of the activin receptor signaling pathway and its inhibition. Cytokine Growth Factor Rev 2021; 60:1-17. [PMID: 33933900 DOI: 10.1016/j.cytogfr.2021.04.001] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 04/14/2021] [Accepted: 04/15/2021] [Indexed: 01/19/2023]
Abstract
This review captures the anabolic and stimulatory effects observed with inhibition of the transforming growth factor β superfamily in muscle, blood, and bone. New medicinal substances that rectify activin, myostatin, and growth differentiation factor 11 signaling give hope to the many whose lives are affected by deterioration of these tissues. The review first covers the origin, structure, and common pathway of activins, myostatin, and growth differentiation factor 11 along with the pharmacodynamics of the new class of molecules designed to oppose the activin receptor signaling pathway. Current terminology surrounding this new class of molecules is inconsistent and does not infer functionality. Adopting inhibitors of the activin receptor signaling pathway (IASPs) as a generic term is proposed because it encapsulates the molecular mechanisms along the pathway trajectory. To conclude, a pragmatic classification of IASPs is presented that integrates functionality and side effects based on the data available from animals and humans. This provides researchers and clinicians with a tool to tailor IASPs therapy according to the need of projects or patients and with respect to side effects.
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Affiliation(s)
- Andreas Lodberg
- Department of Biomedicine, Aarhus University, Department of Respiratory Diseases and Allergy, Aarhus University Hospital, Wilhelm Meyers Allé, DK-8000, Aarhus, Denmark.
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31
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Affiliation(s)
- Ali T Taher
- From the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); the International Network of Hematology, London (K.M.M.); and the Department of Clinical Sciences and Community, University of Milan, Ca' Granda Foundation IRCCS Maggiore Policlinico Hospital, Milan (M.D.C.)
| | - Khaled M Musallam
- From the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); the International Network of Hematology, London (K.M.M.); and the Department of Clinical Sciences and Community, University of Milan, Ca' Granda Foundation IRCCS Maggiore Policlinico Hospital, Milan (M.D.C.)
| | - M Domenica Cappellini
- From the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); the International Network of Hematology, London (K.M.M.); and the Department of Clinical Sciences and Community, University of Milan, Ca' Granda Foundation IRCCS Maggiore Policlinico Hospital, Milan (M.D.C.)
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32
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Grootendorst S, de Wilde J, van Dooijeweert B, van Vuren A, van Solinge W, Schutgens R, van Wijk R, Bartels M. The Interplay between Drivers of Erythropoiesis and Iron Homeostasis in Rare Hereditary Anemias: Tipping the Balance. Int J Mol Sci 2021; 22:ijms22042204. [PMID: 33672223 PMCID: PMC7927117 DOI: 10.3390/ijms22042204] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 02/18/2021] [Accepted: 02/19/2021] [Indexed: 01/19/2023] Open
Abstract
Rare hereditary anemias (RHA) represent a group of disorders characterized by either impaired production of erythrocytes or decreased survival (i.e., hemolysis). In RHA, the regulation of iron metabolism and erythropoiesis is often disturbed, leading to iron overload or worsening of chronic anemia due to unavailability of iron for erythropoiesis. Whereas iron overload generally is a well-recognized complication in patients requiring regular blood transfusions, it is also a significant problem in a large proportion of patients with RHA that are not transfusion dependent. This indicates that RHA share disease-specific defects in erythroid development that are linked to intrinsic defects in iron metabolism. In this review, we discuss the key regulators involved in the interplay between iron and erythropoiesis and their importance in the spectrum of RHA.
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Affiliation(s)
- Simon Grootendorst
- Department of Clinical Chemistry and Haematology, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands; (S.G.); (J.d.W.); (B.v.D.); (W.v.S.); (R.v.W.)
| | - Jonathan de Wilde
- Department of Clinical Chemistry and Haematology, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands; (S.G.); (J.d.W.); (B.v.D.); (W.v.S.); (R.v.W.)
| | - Birgit van Dooijeweert
- Department of Clinical Chemistry and Haematology, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands; (S.G.); (J.d.W.); (B.v.D.); (W.v.S.); (R.v.W.)
| | - Annelies van Vuren
- Van Creveldkliniek, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands; (A.v.V.); (R.S.)
| | - Wouter van Solinge
- Department of Clinical Chemistry and Haematology, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands; (S.G.); (J.d.W.); (B.v.D.); (W.v.S.); (R.v.W.)
| | - Roger Schutgens
- Van Creveldkliniek, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands; (A.v.V.); (R.S.)
| | - Richard van Wijk
- Department of Clinical Chemistry and Haematology, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands; (S.G.); (J.d.W.); (B.v.D.); (W.v.S.); (R.v.W.)
| | - Marije Bartels
- Van Creveldkliniek, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands; (A.v.V.); (R.S.)
- Correspondence:
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33
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Luspatercept restores SDF-1-mediated hematopoietic support by MDS-derived mesenchymal stromal cells. Leukemia 2021; 35:2936-2947. [PMID: 34002031 PMCID: PMC8478655 DOI: 10.1038/s41375-021-01275-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 03/31/2021] [Accepted: 04/29/2021] [Indexed: 02/06/2023]
Abstract
The bone marrow microenvironment (BMME) plays a key role in the pathophysiology of myelodysplastic syndromes (MDS), clonal blood disorders affecting the differentiation, and maturation of hematopoietic stem and progenitor cells (HSPCs). In lower-risk MDS patients, ineffective late-stage erythropoiesis can be restored by luspatercept, an activin receptor type IIB ligand trap. Here, we investigated whether luspatercept can modulate the functional properties of mesenchymal stromal cells (MSCs) as key components of the BMME. Luspatercept treatment inhibited Smad2/3 phosphorylation in both healthy and MDS MSCs and reversed disease-associated alterations in SDF-1 secretion. Pre-treatment of MDS MSCs with luspatercept restored the subsequent clonogenic potential of co-cultured HSPCs and increased both their stromal-adherence and their expression of both CXCR4 and ß3 integrin. Luspatercept pre-treatment of MSCs also increased the subsequent homing of co-cultured HSPCs in zebrafish embryos. MSCs derived from patients who had received luspatercept treatment had an increased capacity to maintain the colony forming potential of normal but not MDS HSPCs. These data provide the first evidence that luspatercept impacts the BMME directly, leading to a selective restoration of the ineffective hematopoiesis that is a hallmark of MDS.
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34
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Mughal TI, Pemmaraju N, Psaila B, Radich J, Bose P, Lion T, Kiladjian JJ, Rampal R, Jain T, Verstovsek S, Yacoub A, Cortes JE, Mesa R, Saglio G, van Etten RA. Illuminating novel biological aspects and potential new therapeutic approaches for chronic myeloproliferative malignancies. Hematol Oncol 2020; 38:654-664. [PMID: 32592408 PMCID: PMC8895354 DOI: 10.1002/hon.2771] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2020] [Accepted: 06/20/2020] [Indexed: 01/18/2023]
Abstract
This review reflects the presentations and discussion at the 14th post-American Society of Hematology (ASH) International Workshop on Chronic Myeloproliferative Malignancies, which took place on the December 10 and 11, 2019, immediately after the 61st ASH Annual Meeting in Orlando, Florida. Rather than present a resume of the proceedings, we address some of the topical translational science research and clinically relevant topics in detail. We consider how recent studies using single-cell genomics and other molecular methods reveal novel aspects of hematopoiesis which in turn raise the possibility of new therapeutic approaches for patients with myeloproliferative neoplasms (MPNs). We discuss how alternative therapies could benefit patients with chronic myeloid leukemia who develop BCR-ABL1 mutant subclones following ABL1-tyrosine kinase inhibitor therapy. In MPNs, we focus on efforts beyond JAK-STAT and the merits of integrating activin receptor ligand traps, interferon-α, and allografting in the current treatment algorithm for patients with myelofibrosis.
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MESH Headings
- Anemia/diagnosis
- Anemia/etiology
- Anemia/therapy
- Biomarkers
- Biomarkers, Tumor
- Combined Modality Therapy/adverse effects
- Combined Modality Therapy/methods
- Disease Management
- Disease Susceptibility
- Drug Development
- Humans
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/complications
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/diagnosis
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/etiology
- Leukemia, Myelogenous, Chronic, BCR-ABL Positive/therapy
- Molecular Diagnostic Techniques
- Molecular Targeted Therapy
- Myeloproliferative Disorders/complications
- Myeloproliferative Disorders/diagnosis
- Myeloproliferative Disorders/etiology
- Myeloproliferative Disorders/therapy
- Prognosis
- Single-Cell Analysis/methods
- Translational Research, Biomedical
- Treatment Outcome
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Affiliation(s)
| | | | - Bethan Psaila
- MRC Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Jerald Radich
- Frederick Hutchinson Cancer Research Center, Seattle, Washington, USA
| | | | - Thomas Lion
- Childrens Cancer Research Institute, Vienna, Austria
| | | | - Raajit Rampal
- Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Tania Jain
- Sidney Kimmel Cancer Center, John Hopkins Hospital, Baltimore, Maryland, USA
| | | | - Abdulraheem Yacoub
- Division of Hematologic Malignancies, University of Kansas, Kansas City, Kansas, USA
| | - Jorge E. Cortes
- Georgia Cancer Center, Augusta University, Augusta, Georgia, USA
| | - Ruben Mesa
- Mays Cancer Center at UT Health San Antonio MD Anderson, San Antonio, Texas, USA
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35
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Activin Receptor-Ligand Trap for the Treatment of β-thalassemia: A Serendipitous Discovery. Mediterr J Hematol Infect Dis 2020; 12:e2020075. [PMID: 33194149 PMCID: PMC7643807 DOI: 10.4084/mjhid.2020.075] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 10/09/2020] [Indexed: 12/17/2022] Open
Abstract
β-thalassemia is a hereditary disorder caused by defective production of β-globin chains of hemoglobin (Hb) that leads to an increased α/β globins ratio with subsequent free α-globins. Alpha globin excess causes oxidative stress, red blood cells membrane damage, premature death of late-stage erythroid precursors, resulting in ineffective erythropoiesis. The transforming growth factor β (TGF-β) superfamily signaling acts on biological processes, such as cell quiescence, apoptosis, proliferation, differentiation, and migration, and plays an essential role in regulating the hematopoiesis. This pathway can lose its physiologic regulation in pathologic conditions, leading to anemia and ineffective erythropoiesis. Activin receptor-ligand trap molecules such as Sotatercept and Luspatercept downregulate the TGF-β pathway, thus inhibiting the Smad2/3 cascade and alleviating anemia in patients with β-thalassemia and myelodysplastic syndromes. In this review, we describe in extenso the TGF-β pathway, as well as the molecular and biological basis of activin receptors ligand traps, focusing on their role in various β-thalassemia experimental models. The most recent results from clinical trials on sotatercept and luspatercept will also be reviewed.
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Similar sequences but dissimilar biological functions of GDF11 and myostatin. Exp Mol Med 2020; 52:1673-1693. [PMID: 33077875 PMCID: PMC8080601 DOI: 10.1038/s12276-020-00516-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 08/13/2020] [Accepted: 08/17/2020] [Indexed: 12/27/2022] Open
Abstract
Growth differentiation factor 11 (GDF11) and myostatin (MSTN) are closely related TGFβ family members that are often believed to serve similar functions due to their high homology. However, genetic studies in animals provide clear evidence that they perform distinct roles. While the loss of Mstn leads to hypermuscularity, the deletion of Gdf11 results in abnormal skeletal patterning and organ development. The perinatal lethality of Gdf11-null mice, which contrasts with the long-term viability of Mstn-null mice, has led most research to focus on utilizing recombinant GDF11 proteins to investigate the postnatal functions of GDF11. However, the reported outcomes of the exogenous application of recombinant GDF11 proteins are controversial partly because of the different sources and qualities of recombinant GDF11 used and because recombinant GDF11 and MSTN proteins are nearly indistinguishable due to their similar structural and biochemical properties. Here, we analyze the similarities and differences between GDF11 and MSTN from an evolutionary point of view and summarize the current understanding of the biological processing, signaling, and physiological functions of GDF11 and MSTN. Finally, we discuss the potential use of recombinant GDF11 as a therapeutic option for a wide range of medical conditions and the possible adverse effects of GDF11 inhibition mediated by MSTN inhibitors.
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Verma A, Suragani RN, Aluri S, Shah N, Bhagat TD, Alexander MJ, Komrokji R, Kumar R. Biological basis for efficacy of activin receptor ligand traps in myelodysplastic syndromes. J Clin Invest 2020; 130:582-589. [PMID: 31961337 DOI: 10.1172/jci133678] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Signaling by the TGF-β superfamily is important in the regulation of hematopoiesis and is dysregulated in myelodysplastic syndromes (MDSs), contributing to ineffective hematopoiesis and clinical cytopenias. TGF-β, activins, and growth differentiation factors exert inhibitory effects on red cell formation by activating canonical SMAD2/3 pathway signaling. In this Review, we summarize evidence that overactivation of SMAD2/3 signaling pathways in MDSs causes anemia due to impaired erythroid maturation. We also describe the basis for biological activity of activin receptor ligand traps, novel fusion proteins such as luspatercept that are promising as erythroid maturation agents to alleviate anemia and related comorbidities in MDSs and other conditions characterized by impaired erythroid maturation.
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Affiliation(s)
- Amit Verma
- Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York, USA
| | | | - Srinivas Aluri
- Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York, USA
| | - Nishi Shah
- Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York, USA
| | - Tushar D Bhagat
- Albert Einstein College of Medicine, Montefiore Medical Center, Bronx, New York, USA
| | | | | | - Ravi Kumar
- Acceleron Pharma, Cambridge, Massachusetts, USA
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Suh J, Lee YS. Myostatin Inhibitors: Panacea or Predicament for Musculoskeletal Disorders? J Bone Metab 2020; 27:151-165. [PMID: 32911580 PMCID: PMC7571243 DOI: 10.11005/jbm.2020.27.3.151] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Accepted: 06/23/2020] [Indexed: 01/19/2023] Open
Abstract
Myostatin, also known as growth differentiation factor 8 (GDF8), is a transforming growth factor-β (TGF-β) family member that functions to limit skeletal muscle growth. Accordingly, loss-of-function mutations in myostatin result in a dramatic increase in muscle mass in humans and various animals, while its overexpression leads to severe muscle atrophy. Myostatin also exerts a significant effect on bone metabolism, as demonstrated by enhanced bone mineral density and bone regeneration in myostatin null mice. The identification of myostatin as a negative regulator of muscle and bone mass has sparked an enormous interest in developing myostatin inhibitors as therapeutic agents for treating a variety of clinical conditions associated with musculoskeletal disorders. As a result, various myostatin-targeting strategies involving antibodies, myostatin propeptides, soluble receptors, and endogenous antagonists have been generated, and many of them have progressed to clinical trials. Importantly, most myostatin inhibitors also repress the activities of other closely related TGF-β family members including GDF11, activins, and bone morphogenetic proteins (BMPs), increasing the potential for unwanted side effects, such as vascular side effects through inhibition of BMP 9/10 and bone weakness induced by follistatin through antagonizing several TGF-β family members. Therefore, a careful distinction between targets that may enhance the efficacy of an agent and those that may cause adverse effects is required with the improvement of the target specificity. In this review, we discuss the current understanding of the endogenous function of myostatin, and provide an overview of clinical trial outcomes from different myostatin inhibitors.
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Affiliation(s)
- Joonho Suh
- Department of Molecular Genetics and Dental Pharmacology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Korea
| | - Yun-Sil Lee
- Department of Molecular Genetics and Dental Pharmacology, School of Dentistry and Dental Research Institute, Seoul National University, Seoul, Korea
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De Rosa G, Andolfo I, Marra R, Manna F, Rosato BE, Iolascon A, Russo R. RAP-011 Rescues the Disease Phenotype in a Cellular Model of Congenital Dyserythropoietic Anemia Type II by Inhibiting the SMAD2-3 Pathway. Int J Mol Sci 2020; 21:ijms21155577. [PMID: 32759740 PMCID: PMC7432210 DOI: 10.3390/ijms21155577] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 07/29/2020] [Accepted: 07/30/2020] [Indexed: 01/12/2023] Open
Abstract
Congenital dyserythropoietic anemia type II (CDA II) is a hypo-productive anemia defined by ineffective erythropoiesis through maturation arrest of erythroid precursors. CDA II is an autosomal recessive disorder due to loss-of-function mutations in SEC23B. Currently, management of patients with CDA II is based on transfusions, splenectomy, or hematopoietic stem-cell transplantation. Several studies have highlighted benefits of ACE-011 (sotatercept) treatment of ineffective erythropoiesis, which acts as a ligand trap against growth differentiation factor (GDF)11. Herein, we show that GDF11 levels are increased in CDA II, which suggests sotatercept as a targeted therapy for treatment of these patients. Treatment of stable clones of SEC23B-silenced erythroleukemia K562 cells with the iron-containing porphyrin hemin plus GDF11 increased expression of pSMAD2 and reduced nuclear localization of the transcription factor GATA1, with subsequent reduced gene expression of erythroid differentiation markers. We demonstrate that treatment of these SEC23B-silenced K562 cells with RAP-011, a "murinized" ortholog of sotatercept, rescues the disease phenotype by restoring gene expression of erythroid markers through inhibition of the phosphorylated SMAD2 pathway. Our data also demonstrate the effect of RAP-011 treatment in reducing the expression of erythroferrone in vitro, thus suggesting a possible beneficial role of the use of sotatercept in the management of iron overload in patients with CDA II.
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Affiliation(s)
- Gianluca De Rosa
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples Federico II, 80131 Naples, Italy; (G.D.R.); (R.M.); (B.E.R.); (A.I.)
- Ceinge Biotecnologie Avanzate, 80145 Naples, Italy;
| | - Immacolata Andolfo
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples Federico II, 80131 Naples, Italy; (G.D.R.); (R.M.); (B.E.R.); (A.I.)
- Ceinge Biotecnologie Avanzate, 80145 Naples, Italy;
- Correspondence: (I.A.); (R.R.); Tel.: +39-081-3737736 (I.A.); +39-081-3737736 (R.R.)
| | - Roberta Marra
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples Federico II, 80131 Naples, Italy; (G.D.R.); (R.M.); (B.E.R.); (A.I.)
- Ceinge Biotecnologie Avanzate, 80145 Naples, Italy;
| | | | - Barbara Eleni Rosato
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples Federico II, 80131 Naples, Italy; (G.D.R.); (R.M.); (B.E.R.); (A.I.)
- Ceinge Biotecnologie Avanzate, 80145 Naples, Italy;
| | - Achille Iolascon
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples Federico II, 80131 Naples, Italy; (G.D.R.); (R.M.); (B.E.R.); (A.I.)
- Ceinge Biotecnologie Avanzate, 80145 Naples, Italy;
| | - Roberta Russo
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples Federico II, 80131 Naples, Italy; (G.D.R.); (R.M.); (B.E.R.); (A.I.)
- Ceinge Biotecnologie Avanzate, 80145 Naples, Italy;
- Correspondence: (I.A.); (R.R.); Tel.: +39-081-3737736 (I.A.); +39-081-3737736 (R.R.)
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Feld J, Navada SC, Silverman LR. Myelo-deception: Luspatercept & TGF-Beta ligand traps in myeloid diseases & anemia. Leuk Res 2020; 97:106430. [PMID: 32763582 DOI: 10.1016/j.leukres.2020.106430] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 07/27/2020] [Accepted: 07/28/2020] [Indexed: 01/19/2023]
Abstract
Myelodysplastic syndromes (MDS) encompass a clinically heterogenous group of diseases defined by a clonal bone marrow failure state. Patients with lower-risk MDS primarily suffer from the consequences of anemia, with a subset having increased risks of bleeding and infection. There are few good therapeutic options for this patient population, as patients are dependent on cytokine support to improve hematopoiesis. Our review will discuss luspatercept, a transforming growth factor (TGF)-Beta ligand trap, the first new Food & Drug Administration (FDA)-approved treatment in MDS in over a decade. We will explore the different TGF-Beta ligand traps that have been developed for a number of diseases, with a focus on myeloid malignancies.
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Affiliation(s)
- Jonathan Feld
- Tisch Cancer Institute, Division of Hematology/Oncology, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1079, New York, NY, 10029, United States.
| | - Shyamala C Navada
- Tisch Cancer Institute, Division of Hematology/Oncology, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1079, New York, NY, 10029, United States.
| | - Lewis R Silverman
- Tisch Cancer Institute, Division of Hematology/Oncology, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, Box 1079, New York, NY, 10029, United States.
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Teodorescu P, Pasca S, Dima D, Tomuleasa C, Ghiaur G. Targeting the Microenvironment in MDS: The Final Frontier. Front Pharmacol 2020; 11:1044. [PMID: 32742264 PMCID: PMC7364152 DOI: 10.3389/fphar.2020.01044] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 06/26/2020] [Indexed: 12/15/2022] Open
Abstract
Myelodysplastic syndromes (MDS) are a heterogeneous group of malignant disorders of hematopoietic stem and progenitor cells (HSPC), mainly characterized by ineffective hematopoiesis leading to peripheral cytopenias and progressive bone marrow failure. While clonal dominance is nearly universal at diagnosis, most genetic mutations identified in patients with MDS do not provide a conspicuous advantage to the malignant cells. In this context, malignant cells alter their adjacent bone marrow microenvironment (BME) and rely on cell extrinsic factors to maintain clonal dominance. The profoundly disturbed BME favors the myelodysplastic cells and, most importantly is detrimental to normal hematopoietic cells. Thus, the MDS microenvironment not only contributes to the observed cytopenias seen in these patients but could also negatively impact the engraftment of normal, allogeneic HSPCs in patients with MDS undergoing bone marrow transplant. Therefore, successful therapies in MDS should not only target the malignant cells but also reprogram their bone marrow microenvironment. Here, we will provide a synopsis of how drugs currently used or on the verge of being approved for the treatment of MDS may achieve this goal.
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Affiliation(s)
- Patric Teodorescu
- Department of Hematology, Iuliu Hategan University of Medicine and Pharmacy, Cluj-Napoca, Romania.,Department of Oncology, The Johns Hopkins Hospital, Johns Hopkins Medicine, Baltimore, MD, United States
| | - Sergiu Pasca
- Department of Hematology, Iuliu Hategan University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Delia Dima
- Department of Hematology, Iuliu Hategan University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Ciprian Tomuleasa
- Department of Hematology, Iuliu Hategan University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Gabriel Ghiaur
- Department of Oncology, The Johns Hopkins Hospital, Johns Hopkins Medicine, Baltimore, MD, United States
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Vaughan D, Kretz O, Alqallaf A, Mitchell R, Von der Heide JL, Vaiyapuri S, Matsakas A, Pasternack A, Collins-Hooper H, Ritvos O, Ballesteros R, Huber TB, Amthor H, Mukherjee A, Patel K. Diminution in sperm quantity and quality in mouse models of Duchenne Muscular Dystrophy induced by a myostatin-based muscle growth-promoting intervention. Eur J Transl Myol 2020. [DOI: 10.4081/ejtm.2020.8904] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Duchenne Muscular Dystrophy is a devastating disease caused by the absence of a functional rod-shaped cytoplasmic protein called dystrophin. Several avenues are being developed aimed to restore dystrophin expression in boys affected by this X-linked disease. However, its complete cure is likely to need combinational approaches which may include regimes aimed at restoring muscle mass. Augmenting muscle growth through the manipulation of the Myostatin/Activin signalling axis has received much attention. However, we have recently shown that while manipulation of this axis in wild type mice using the sActRIIB ligand trap indeed results in muscle growth, it also had a detrimental impact on the testis. Here we examined the impact of administering a powerful Myostatin/Activin antagonist in two mouse models of Duchenne Muscular Dystrophy. We report that whilst the impact on muscle growth was not always positive, both models showed attenuated testis development. Sperm number, motility and ultrastructure were significantly affected by the sActRIIB treatment. Our report suggests that interventions based on Myostatin/Activin should investigate off-target effects on tissues as well as muscle.
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Vaughan D, Kretz O, Alqallaf A, Mitchell R, von der Heide JL, Vaiyapuri S, Matsakas A, Pasternack A, Collins-Hooper H, Ritvos O, Ballesteros R, Huber TB, Amthor H, Mukherjee A, Patel K. Diminution in sperm quantity and quality in mouse models of Duchenne Muscular Dystrophy induced by a myostatin-based muscle growth-promoting intervention. Eur J Transl Myol 2020; 30:8904. [PMID: 32782759 PMCID: PMC7385695 DOI: 10.4081/ejtm.2019.8904] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Accepted: 03/12/2020] [Indexed: 02/06/2023] Open
Abstract
Duchenne Muscular Dystrophy is a devastating disease caused by the absence of a functional rod-shaped cytoplasmic protein called dystrophin. Several avenues are being developed aimed to restore dystrophin expression in boys affected by this X-linked disease. However, its complete cure is likely to need combinational approaches which may include regimes aimed at restoring muscle mass. Augmenting muscle growth through the manipulation of the Myostatin/Activin signalling axis has received much attention. However, we have recently shown that while manipulation of this axis in wild type mice using the sActRIIB ligand trap indeed results in muscle growth, it also had a detrimental impact on the testis. Here we examined the impact of administering a powerful Myostatin/Activin antagonist in two mouse models of Duchenne Muscular Dystrophy. We report that whilst the impact on muscle growth was not always positive, both models showed attenuated testis development. Sperm number, motility and ultrastructure were significantly affected by the sActRIIB treatment. Our report suggests that interventions based on Myostatin/Activin should investigate off-target effects on tissues as well as muscle.
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Affiliation(s)
| | - Oliver Kretz
- III Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Ali Alqallaf
- School of Biological Sciences, University of Reading, UK
| | | | - Jennie L von der Heide
- III Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | | | - Antonios Matsakas
- Molecular Physiology Laboratory, Centre for Atherothrombosis & Metabolic Disease, Hull York Medical School, Hull, UK
| | - Arja Pasternack
- Department of Bacteriology and Immunology, University of Helsinki, Helsinki, Finland
| | | | - Olli Ritvos
- Department of Bacteriology and Immunology, University of Helsinki, Helsinki, Finland
| | | | - Tobias B Huber
- III Department of Medicine, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Helge Amthor
- Versailles Saint-Quentin-en-Yvelines University, INSERM U1179, LIA BAHN CSM, Montigny-le-Bretonneux, France
| | | | - Ketan Patel
- School of Biological Sciences, University of Reading, UK
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Controversies on the Consequences of Iron Overload and Chelation in MDS. Hemasphere 2020; 4:e357. [PMID: 32647792 PMCID: PMC7306315 DOI: 10.1097/hs9.0000000000000357] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Accepted: 02/17/2020] [Indexed: 12/15/2022] Open
Abstract
Many patients with MDS are prone to develop systemic and tissue iron overload in part as a consequence of disease-immanent ineffective erythropoiesis. However, chronic red blood cell transfusions, which are part of the supportive care regimen to correct anemia, are the major source of iron overload in MDS. Increased systemic iron levels eventually lead to the saturation of the physiological systemic iron carrier transferrin and the occurrence of non-transferrin-bound iron (NTBI) together with its reactive fraction, the labile plasma iron (LPI). NTBI/LPI-mediated toxicity and tissue iron overload may exert multiple detrimental effects that contribute to the pathogenesis, complications and eventually evolution of MDS. Until recently, the evidence supporting the use of iron chelation in MDS was based on anecdotal reports, uncontrolled clinical trials or prospective registries. Despite not fully conclusive, these and more recent studies, including the TELESTO trial, unravel an overall adverse action of iron overload and therapeutic benefit of chelation, ranging from improved hematological outcome, reduced transfusion dependence and superior survival of iron-loaded MDS patients. The still limited and somehow controversial experimental and clinical data available from preclinical studies and randomized trials highlight the need for further investigation to fully elucidate the mechanisms underlying the pathological impact of iron overload-mediated toxicity as well as the effect of classic and novel iron restriction approaches in MDS. This review aims at providing an overview of the current clinical and translational debated landscape about the consequences of iron overload and chelation in the setting of MDS.
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Cappellini MD, Viprakasit V, Taher AT, Georgiev P, Kuo KHM, Coates T, Voskaridou E, Liew HK, Pazgal-Kobrowski I, Forni GL, Perrotta S, Khelif A, Lal A, Kattamis A, Vlachaki E, Origa R, Aydinok Y, Bejaoui M, Ho PJ, Chew LP, Bee PC, Lim SM, Lu MY, Tantiworawit A, Ganeva P, Gercheva L, Shah F, Neufeld EJ, Thompson A, Laadem A, Shetty JK, Zou J, Zhang J, Miteva D, Zinger T, Linde PG, Sherman ML, Hermine O, Porter J, Piga A. A Phase 3 Trial of Luspatercept in Patients with Transfusion-Dependent β-Thalassemia. N Engl J Med 2020; 382:1219-1231. [PMID: 32212518 DOI: 10.1056/nejmoa1910182] [Citation(s) in RCA: 159] [Impact Index Per Article: 39.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
BACKGROUND Patients with transfusion-dependent β-thalassemia need regular red-cell transfusions. Luspatercept, a recombinant fusion protein that binds to select transforming growth factor β superfamily ligands, may enhance erythroid maturation and reduce the transfusion burden (the total number of red-cell units transfused) in such patients. METHODS In this randomized, double-blind, phase 3 trial, we assigned, in a 2:1 ratio, adults with transfusion-dependent β-thalassemia to receive best supportive care plus luspatercept (at a dose of 1.00 to 1.25 mg per kilogram of body weight) or placebo for at least 48 weeks. The primary end point was the percentage of patients who had a reduction in the transfusion burden of at least 33% from baseline during weeks 13 through 24 plus a reduction of at least 2 red-cell units over this 12-week interval. Other efficacy end points included reductions in the transfusion burden during any 12-week interval and results of iron studies. RESULTS A total of 224 patients were assigned to the luspatercept group and 112 to the placebo group. Luspatercept or placebo was administered for a median of approximately 64 weeks in both groups. The percentage of patients who had a reduction in the transfusion burden of at least 33% from baseline during weeks 13 through 24 plus a reduction of at least 2 red-cell units over this 12-week interval was significantly greater in the luspatercept group than in the placebo group (21.4% vs. 4.5%, P<0.001). During any 12-week interval, the percentage of patients who had a reduction in transfusion burden of at least 33% was greater in the luspatercept group than in the placebo group (70.5% vs. 29.5%), as was the percentage of those who had a reduction of at least 50% (40.2% vs. 6.3%). The least-squares mean difference between the groups in serum ferritin levels at week 48 was -348 μg per liter (95% confidence interval, -517 to -179) in favor of luspatercept. Adverse events of transient bone pain, arthralgia, dizziness, hypertension, and hyperuricemia were more common with luspatercept than placebo. CONCLUSIONS The percentage of patients with transfusion-dependent β-thalassemia who had a reduction in transfusion burden was significantly greater in the luspatercept group than in the placebo group, and few adverse events led to the discontinuation of treatment. (Funded by Celgene and Acceleron Pharma; BELIEVE ClinicalTrials.gov number, NCT02604433; EudraCT number, 2015-003224-31.).
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Affiliation(s)
- M Domenica Cappellini
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Vip Viprakasit
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Ali T Taher
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Pencho Georgiev
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Kevin H M Kuo
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Thomas Coates
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Ersi Voskaridou
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Hong-Keng Liew
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Idit Pazgal-Kobrowski
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - G L Forni
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Silverio Perrotta
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Abderrahim Khelif
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Ashutosh Lal
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Antonis Kattamis
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Efthymia Vlachaki
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Raffaella Origa
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Yesim Aydinok
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Mohamed Bejaoui
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - P Joy Ho
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Lee-Ping Chew
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Ping-Chong Bee
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Soo-Min Lim
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Meng-Yao Lu
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Adisak Tantiworawit
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Penka Ganeva
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Liana Gercheva
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Farrukh Shah
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Ellis J Neufeld
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Alexis Thompson
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Abderrahmane Laadem
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Jeevan K Shetty
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Jun Zou
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Jennie Zhang
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Dimana Miteva
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Tatiana Zinger
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Peter G Linde
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Matthew L Sherman
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Olivier Hermine
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - John Porter
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
| | - Antonio Piga
- From the Department of Clinical Sciences and Community, University of Milan, IRCCS Ca' Granda Foundation Maggiore Policlinico Hospital, Milan (M.D.C.), Centro della Microcitemia e Anemie Congenite e del Dismetabolismo del Ferro, E.O. Ospedali Galliera, Genoa (G.L.F.), Ospedale Pediatrico Microcitemico A. Cao, Azienda Ospedaliera G. Brotzu, Cagliari (R.O.), Ematologia e Oncologia Pediatrica, Università della Campania L. Vanvitelli, Caserta (S.P.), and the Department of Clinical and Biological Sciences, University of Turin, Turin (A.P.) - all in Italy; Siriraj Hospital, Mahidol University, Bangkok (V.V.), and the Division of Hematology, Department of Internal Medicine, Chiang Mai University, Chiang Mai (A. Tantiworawit) - both in Thailand; the Department of Internal Medicine, American University of Beirut Medical Center, Beirut, Lebanon (A.T.T.); St. George University Hospital for Active Treatment and Medical University of Plovdiv, Plovdiv (P. Georgiev), University Specialized Hospital for Active Treatment in Oncology, Sofia (P. Ganeva), and University Hospital St. Marina, Varna (L.G.) - all in Bulgaria; the Division of Medical Oncology and Hematology, Department of Medicine, University Health Network and Division of Hematology, Department of Medicine, University of Toronto, Toronto (K.H.M.K.); the Children's Center for Cancer and Blood Diseases, Children's Hospital Los Angeles, and Keck School of Medicine of the University of Southern California, Los Angeles (T.C.), and the University of California San Francisco Benioff Children's Hospital, Oakland (A. Lal) - all in California; the Thalassemia and Sickle Cell Center, Laiko General Hospital (E. Voskaridou), and the First Department of Pediatrics, National and Kapodistrian University of Athens (A. Kattamis), Athens, and the Adult Thalassemia Unit, Hippokration Hospital, Thessaloniki (E. Vlachaki) - all in Greece; Hospital Sultanah Bahiyah, Alor Setar (H.K.L.), Hospital Umum, Sarawak, Kuching (L.P.C.), the University of Malaya Medical Center, Kuala Lumpur (P.C.B.), and Hospital Sultanah Aminah, Johor Bahru (S.M.L.) - all in Malaysia; the Comprehensive Center of Thalassemia, Rabin Medical Center, Beilinson Hospital, Petah Tikva, Israel (I.P.-K.); Farhat Hached University Hospital, Sousse (A. Khelif), and the National Bone Marrow Transplant Center and Faculty of Medicine, University of Tunis El Manar, Tunis (M.B.) - both in Tunisia; the Department of Pediatric Hematology and Oncology, Ege University Hospital, Izmir, Turkey (Y.A.); Royal Prince Alfred Hospital and the University of Sydney, Sydney (P.J.H.); National Taiwan University, Taipei, Taiwan (M.-Y. L.); the Department of Haematology, Whittington Health NHS Trust (F.S.), and the Department of Haematology, University College London and University College London Hospitals NHS Foundation Trust (J.P.) - all in London; St. Jude Children's Research Hospital, Memphis, TN (E.J.N.); Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago (A. Thompson); Celgene, Summit, NJ (A. Laadem, J. Zou, J. Zhang); Celgene, Boudry, Switzerland (J.K.S., D.M., T.Z.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and the Department of Hematology, Necker Hospital, Assistance Publique-Hôpitaux de Paris (O.H.), and Imagine Institute, INSERM Unité 1163, University of Paris (O.H.) - both in Paris
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Fenaux P, Platzbecker U, Mufti GJ, Garcia-Manero G, Buckstein R, Santini V, Díez-Campelo M, Finelli C, Cazzola M, Ilhan O, Sekeres MA, Falantes JF, Arrizabalaga B, Salvi F, Giai V, Vyas P, Bowen D, Selleslag D, DeZern AE, Jurcic JG, Germing U, Götze KS, Quesnel B, Beyne-Rauzy O, Cluzeau T, Voso MT, Mazure D, Vellenga E, Greenberg PL, Hellström-Lindberg E, Zeidan AM, Adès L, Verma A, Savona MR, Laadem A, Benzohra A, Zhang J, Rampersad A, Dunshee DR, Linde PG, Sherman ML, Komrokji RS, List AF. Luspatercept in Patients with Lower-Risk Myelodysplastic Syndromes. N Engl J Med 2020; 382:140-151. [PMID: 31914241 DOI: 10.1056/nejmoa1908892] [Citation(s) in RCA: 292] [Impact Index Per Article: 73.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
BACKGROUND Patients with anemia and lower-risk myelodysplastic syndromes in whom erythropoiesis-stimulating agent therapy is not effective generally become dependent on red-cell transfusions. Luspatercept, a recombinant fusion protein that binds transforming growth factor β superfamily ligands to reduce SMAD2 and SMAD3 signaling, showed promising results in a phase 2 study. METHODS In a double-blind, placebo-controlled, phase 3 trial, we randomly assigned patients with very-low-risk, low-risk, or intermediate-risk myelodysplastic syndromes (defined according to the Revised International Prognostic Scoring System) with ring sideroblasts who had been receiving regular red-cell transfusions to receive either luspatercept (at a dose of 1.0 up to 1.75 mg per kilogram of body weight) or placebo, administered subcutaneously every 3 weeks. The primary end point was transfusion independence for 8 weeks or longer during weeks 1 through 24, and the key secondary end point was transfusion independence for 12 weeks or longer, assessed during both weeks 1 through 24 and weeks 1 through 48. RESULTS Of the 229 patients enrolled, 153 were randomly assigned to receive luspatercept and 76 to receive placebo; the baseline characteristics of the patients were balanced. Transfusion independence for 8 weeks or longer was observed in 38% of the patients in the luspatercept group, as compared with 13% of those in the placebo group (P<0.001). A higher percentage of patients in the luspatercept group than in the placebo group met the key secondary end point (28% vs. 8% for weeks 1 through 24, and 33% vs. 12% for weeks 1 through 48; P<0.001 for both comparisons). The most common luspatercept-associated adverse events (of any grade) included fatigue, diarrhea, asthenia, nausea, and dizziness. The incidence of adverse events decreased over time. CONCLUSIONS Luspatercept reduced the severity of anemia in patients with lower-risk myelodysplastic syndromes with ring sideroblasts who had been receiving regular red-cell transfusions and who had disease that was refractory to or unlikely to respond to erythropoiesis-stimulating agents or who had discontinued such agents owing to an adverse event. (Funded by Celgene and Acceleron Pharma; MEDALIST ClinicalTrials.gov number, NCT02631070; EudraCT number, 2015-003454-41.).
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Affiliation(s)
- Pierre Fenaux
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Uwe Platzbecker
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Ghulam J Mufti
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Guillermo Garcia-Manero
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Rena Buckstein
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Valeria Santini
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - María Díez-Campelo
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Carlo Finelli
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Mario Cazzola
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Osman Ilhan
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Mikkael A Sekeres
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - José F Falantes
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Beatriz Arrizabalaga
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Flavia Salvi
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Valentina Giai
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Paresh Vyas
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - David Bowen
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Dominik Selleslag
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Amy E DeZern
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Joseph G Jurcic
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Ulrich Germing
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Katharina S Götze
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Bruno Quesnel
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Odile Beyne-Rauzy
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Thomas Cluzeau
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Maria-Teresa Voso
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Dominiek Mazure
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Edo Vellenga
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Peter L Greenberg
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Eva Hellström-Lindberg
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Amer M Zeidan
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Lionel Adès
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Amit Verma
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Michael R Savona
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Abderrahmane Laadem
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Aziz Benzohra
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Jennie Zhang
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Anita Rampersad
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Diana R Dunshee
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Peter G Linde
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Matthew L Sherman
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Rami S Komrokji
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
| | - Alan F List
- From Service d'Hématologie Séniors, Hôpital Saint-Louis, Assistance Publique-Hôpitaux de Paris and Université Paris 7, Paris (P.F., L.A.), Service des Maladies du Sang, Hôpital Huriez, Centre Hospitalier Universitaire (CHU) de Lille, Lille (B.Q.), the Department of Internal Medicine, CHU Toulouse, Institut Universitaire du Cancer de Toulouse, Toulouse (O.B.-R.), and Université Cote d'Azur, Département d'Hématologie Clinique, CHU Nice, Nice (T.C.) - all in France; Medical Clinic and Policlinic 1, Hematology and Cellular Therapy, Leipzig University Hospital, Leipzig (U.P.), Klinik für Hämatologie, Onkologie, and Klinische Immunologie, Universitätsklinik Düsseldorf, Düsseldorf (U.G.), and Klinik und Poliklinik für Innere Medizin III, Technische Universität München, Munich (K.S.G.) - all in Germany; the Department of Haemato-Oncology, King's College London, London (G.J.M.), Radcliffe Department of Medicine, University of Oxford, John Radcliffe Hospital, Oxford (P.V.), and the Department of Haematology, Leeds Teaching Hospitals NHS Trust, Leeds (D.B.) - all in the United Kingdom; the Department of Leukemia, University of Texas M.D. Anderson Cancer Center, Houston (G.G.-M.); Odette Cancer Centre, Sunnybrook Health Sciences Centre, Toronto (R.B.); MDS Unit, Azienda Ospedaliero Universitaria Careggi, University of Florence, Florence (V.S.), the Department of Oncology and Hematology, S. Orsola-Malpighi University Hospital, Bologna (C.F.), the University of Pavia, Fondazione IRCCS Policlinico S. Matteo, Pavia (M.C.), the Hematology Unit, Santi Antonio e Biagio e Cesare Arrigo Hospital, Alessandria (F.S., V.G.), and Dipartimento Biomedicina e Prevenzione, University of Rome Tor Vergata, Rome (M.-T.V.) - all in Italy; the Hematology Department, University Hospital of Salamanca, Institute of Biomedical Research of Salamanca, Salamanca (M.D.-C.), Unidad de Hematología, Hospital Universitario Virgen del Rocío, Seville (J.F.F.), and the Department of Hematology, Hospital Universitario Cruces, Vizcaya (B.A.) - all in Spain; the Department of Hematology Science, School of Medicine, Ankara University, Ankara, Turkey (O.I.); the Department of Hematology and Medical Oncology, Cleveland Clinic, Cleveland (M.A.S.); the Department of Hematology, Algemeen Ziekenhuis Sint-Jan, Bruges (D.S.), and Universitair Ziekenhuis Gent, Ghent (D.M.) - both in Belgium; the Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore (A.E.D.); the Division of Hematology-Oncology, Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center (J.G.J.), and Albert Einstein College of Medicine (A.V.) - both in New York; the Department of Hematology, University Medical Center of Groningen, University of Groningen, Groningen, the Netherlands (E.V.); Stanford University Cancer Center, Stanford, CA (P.L.G.); the Center for Hematology and Regenerative Medicine, Department of Medicine, Karolinska Institutet, Stockholm (E.H.-L.); the Department of Internal Medicine, Yale School of Medicine, Yale University, New Haven, CT (A.M.Z.); Vanderbilt University School of Medicine, Vanderbilt-Ingram Cancer Center, Nashville (M.R.S.); Celgene, Summit, NJ (A.L., J.Z., A.R., D.R.D.); Celgene International, Boudry, Switzerland (A.B.); Acceleron Pharma, Cambridge, MA (P.G.L., M.L.S.); and Moffitt Cancer Center, Tampa, FL (R.S.K., A.F.L.)
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Goldstein JM, Valido A, Lewandowski JP, Walker RG, Mills MJ, Messemer KA, Besseling P, Lee KH, Wattrus SJ, Cho M, Lee RT, Wagers AJ. Variation in zygotic CRISPR/Cas9 gene editing outcomes generates novel reporter and deletion alleles at the Gdf11 locus. Sci Rep 2019; 9:18613. [PMID: 31819086 PMCID: PMC6901511 DOI: 10.1038/s41598-019-54766-y] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Accepted: 11/19/2019] [Indexed: 01/20/2023] Open
Abstract
Recent advances in CRISPR/Cas gene editing technology have significantly expanded the possibilities and accelerated the pace of creating genetically engineered animal models. However, CRISPR/Cas-based strategies designed to precisely edit the genome can often yield unintended outcomes. Here, we report the use of zygotic CRISPR/Cas9 injections to generate a knock-in GFP reporter mouse at the Gdf11 locus. Phenotypic and genomic characterization of founder animals from these injections revealed a subset that contained the correct targeting event and exhibited GFP expression that, within the hematopoietic system, was restricted predominantly to lymphoid cells. Yet, in another subset of founder mice, we detected aberrant integration events at the target site that dramatically and inaccurately shifted hematopoietic GFP expression from the lymphoid to the myeloid lineage. Additionally, we recovered multiple Gdf11 deletion alleles that modified the C-terminus of the GDF11 protein. When bred to homozygosity, most of these alleles recapitulated skeletal phenotypes reported previously for Gdf11 knockout mice, suggesting that these represent null alleles. However, we also recovered one Gdf11 deletion allele that encodes a novel GDF11 variant protein ("GDF11-WE") predicted to contain two additional amino acids (tryptophan (W) and glutamic acid (E)) at the C-terminus of the mature ligand. Unlike the other Gdf11 deletion alleles recovered in this study, homozygosity for the Gdf11WE allele did not phenocopy Gdf11 knockout skeletal phenotypes. Further investigation using in vivo and in vitro approaches demonstrated that GDF11-WE retains substantial physiological function, indicating that GDF11 can tolerate at least some modifications of its C-terminus and providing unexpected insights into its biochemical activities. Altogether, our study confirms that one-step zygotic injections of CRISPR/Cas gene editing complexes provide a quick and powerful tool to generate gene-modified mouse models. Moreover, our findings underscore the critical importance of thorough characterization and validation of any modified alleles generated by CRISPR, as unintended on-target effects that fail to be detected by simple PCR screening can produce substantially altered phenotypic readouts.
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Affiliation(s)
- Jill M Goldstein
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, 02138, USA
- Harvard Stem Cell Institute, Cambridge, MA, 02138, USA
- Paul F. Glenn Center for the Biology of Aging, Harvard Medical School, Boston, MA, 02215, USA
| | - Austin Valido
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, 02138, USA
| | - Jordan P Lewandowski
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, 02138, USA
- Harvard Stem Cell Institute, Cambridge, MA, 02138, USA
| | - Ryan G Walker
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, 02138, USA
- Harvard Stem Cell Institute, Cambridge, MA, 02138, USA
| | - Melanie J Mills
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, 02138, USA
- Harvard Stem Cell Institute, Cambridge, MA, 02138, USA
| | - Kathleen A Messemer
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, 02138, USA
- Harvard Stem Cell Institute, Cambridge, MA, 02138, USA
- Paul F. Glenn Center for the Biology of Aging, Harvard Medical School, Boston, MA, 02215, USA
| | - Paul Besseling
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, 02138, USA
- Harvard Stem Cell Institute, Cambridge, MA, 02138, USA
| | - Kyu Ha Lee
- Department of Nutrition, Harvard T.H. Chan School of Public Health, Boston, MA, 02115, USA
| | - Samuel J Wattrus
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, 02138, USA
- Harvard Stem Cell Institute, Cambridge, MA, 02138, USA
| | - Miook Cho
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, 02138, USA
- Harvard Stem Cell Institute, Cambridge, MA, 02138, USA
- Paul F. Glenn Center for the Biology of Aging, Harvard Medical School, Boston, MA, 02215, USA
| | - Richard T Lee
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, 02138, USA
- Harvard Stem Cell Institute, Cambridge, MA, 02138, USA
| | - Amy J Wagers
- Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, MA, 02138, USA.
- Harvard Stem Cell Institute, Cambridge, MA, 02138, USA.
- Paul F. Glenn Center for the Biology of Aging, Harvard Medical School, Boston, MA, 02215, USA.
- Section on Islet Cell and Regenerative Biology, Joslin Diabetes Center, Boston, MA, 02215, USA.
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Goldstein JM, Sengul H, Messemer KA, Fernández-Alfara M, Garbern JC, Kristl AC, Lee RT, Wagers AJ. Steady-state and regenerative hematopoiesis occurs normally in mice in the absence of GDF11. Blood 2019; 134:1712-1716. [PMID: 31530563 PMCID: PMC6856987 DOI: 10.1182/blood.2019002066] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Accepted: 09/11/2019] [Indexed: 11/20/2022] Open
Abstract
Tightly regulated production of mature blood cells is essential for health and survival in vertebrates and dependent on discrete populations of blood-forming (hematopoietic) stem and progenitor cells. Prior studies suggested that inhibition of growth differentiation factor 11 (GDF11) through soluble activin receptor type II (ActRII) ligand traps or neutralizing antibodies promotes erythroid precursor cell maturation and red blood cell formation in contexts of homeostasis and anemia. As Gdf11 is expressed by mature hematopoietic cells, and erythroid precursor cell expression of Gdf11 has been implicated in regulating erythropoiesis, we hypothesized that genetic disruption of Gdf11 in blood cells might perturb normal hematopoiesis or recovery from hematopoietic insult. Contrary to these predictions, we found that deletion of Gdf11 in the hematopoietic lineage in mice does not alter erythropoiesis or erythroid precursor cell frequency under normal conditions or during hematopoietic recovery after irradiation and transplantation. In addition, although hematopoietic cell-derived Gdf11 may contribute to the pool of circulating GDF11 protein during adult homeostasis, loss of Gdf11 specifically in the blood system does not impair hematopoietic stem cell function or induce overt pathological consequences. Taken together, these results reveal that hematopoietic cell-derived Gdf11 is largely dispensable for native and transplant-induced blood formation.
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Affiliation(s)
- Jill M Goldstein
- Department of Stem Cell and Regenerative Biology, Harvard University and Harvard Stem Cell Institute, Cambridge, MA
- Paul F. Glenn Center for the Biology of Aging, Harvard Medical School, Boston, MA
| | - Hilal Sengul
- Department of Stem Cell and Regenerative Biology, Harvard University and Harvard Stem Cell Institute, Cambridge, MA
| | - Kathleen A Messemer
- Department of Stem Cell and Regenerative Biology, Harvard University and Harvard Stem Cell Institute, Cambridge, MA
- Paul F. Glenn Center for the Biology of Aging, Harvard Medical School, Boston, MA
| | - Marcos Fernández-Alfara
- Department of Stem Cell and Regenerative Biology, Harvard University and Harvard Stem Cell Institute, Cambridge, MA
| | - Jessica C Garbern
- Department of Stem Cell and Regenerative Biology, Harvard University and Harvard Stem Cell Institute, Cambridge, MA
- Department of Cardiology, Boston Children's Hospital, Boston, MA; and
| | - Amy C Kristl
- Department of Stem Cell and Regenerative Biology, Harvard University and Harvard Stem Cell Institute, Cambridge, MA
| | - Richard T Lee
- Department of Stem Cell and Regenerative Biology, Harvard University and Harvard Stem Cell Institute, Cambridge, MA
| | - Amy J Wagers
- Department of Stem Cell and Regenerative Biology, Harvard University and Harvard Stem Cell Institute, Cambridge, MA
- Paul F. Glenn Center for the Biology of Aging, Harvard Medical School, Boston, MA
- Joslin Diabetes Center, Boston, MA
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Bose P. Advances in potential treatment options for myeloproliferative neoplasm associated myelofibrosis. Expert Opin Orphan Drugs 2019; 7:415-425. [PMID: 33094033 PMCID: PMC7577425 DOI: 10.1080/21678707.2019.1664900] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 09/04/2019] [Indexed: 12/11/2022]
Abstract
INTRODUCTION The Janus kinase (JAK)1/2 inhibitor ruxolitinib provides rapid, sustained and often dramatic benefits to patients with myelofibrosis, inducing spleen shrinkage and ameliorating symptoms, and improves survival. However, the drug has little effect on the underlying bone marrow fibrosis or on mutant allele burden, and clinical resistance eventually develops. Furthermore, ruxolitinib-induced cytopenias can be challenging in everyday practice. AREAS COVERED The developmental therapeutics landscape in MF is discussed. This includes potential partners for ruxolitinib being developed with an aim to improve cytopenias, or to enhance its disease-modifying effects. The development of other JAK inhibitors with efficacy post-ruxolitinib or other unique attributes is being pursued in earnest. Agents with novel mechanisms of action are being studied in patients whose disease responds sub-optimally to, is refractory to or progresses after ruxolitinib. EXPERT OPINION The JAK inhibitors fedratinib, pacritinib and momelotinib are clearly active, and it is expected that one or more of these will become licensed in the future. The activin receptor ligand traps are promising as treatments for anemia. Imetelstat has shown interesting activity post-ruxolitinib, and azactidine may be a useful partner for ruxolitinib in some patients. Appropriately, multiple pre-clinical and clinical leads are being pursued in this difficult therapeutic area.
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Affiliation(s)
- Prithviraj Bose
- Department of Leukemia, University of Texas MD Anderson Cancer Center, Houston, TX, USA
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