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Gabelli M, Pérez-Martínez A, Bueno Sánchez D, Lucchini G, Grenier LP, Couture F, Limerick E, Bernaud V, Trabazo Del Castillo M, Ngwube A. Abatacept treatment for autoimmune hemolytic anemia occurring post hematopoietic stem cell transplantation. Bone Marrow Transplant 2024; 59:288-290. [PMID: 38097758 DOI: 10.1038/s41409-023-02173-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 11/29/2023] [Accepted: 12/01/2023] [Indexed: 02/09/2024]
Affiliation(s)
- Maria Gabelli
- Bone Marrow Transplantation, Great Ormond Street Hospital for Children, London, United Kingdom.
- Pediatric Hematology, Oncology and Stem Cell Transplantation, Università degli Studi di Padova, Padova, Italy.
| | - Antonio Pérez-Martínez
- Pediatric Hematology, Oncology and Stem Cell Transplantation, Hospital Universitario La Paz, Universidad Autónoma de Madrid, Instituto de Investigación La Paz, Madrid, Spain
| | - David Bueno Sánchez
- Pediatric Hematology, Oncology and Stem Cell Transplantation, Hospital Universitario La Paz, Universidad Autónoma de Madrid, Instituto de Investigación La Paz, Madrid, Spain
| | - Giovanna Lucchini
- Bone Marrow Transplantation, Great Ormond Street Hospital for Children, London, United Kingdom
| | - Louis-Philippe Grenier
- Bone Marrow Transplantation, CHU de Québec-Université Laval, Hotel-Dieu de Québec, Québec, Canada
| | - Felix Couture
- Bone Marrow Transplantation, CHU de Québec-Université Laval, Hotel-Dieu de Québec, Québec, Canada
| | - Emily Limerick
- Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute, Bethesda, MD, USA
| | - Victoria Bernaud
- Center for Cancer and Blood Disorders, Phoenix Children's Hospital, Phoenix, AZ, USA
| | - Maria Trabazo Del Castillo
- Pediatric Hematology, Oncology and Stem Cell Transplantation, Hospital Sant Joan de Déu, Barcelona, Spain
| | - Alexander Ngwube
- Center for Cancer and Blood Disorders, Phoenix Children's Hospital, Phoenix, AZ, USA
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2
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Builes N. Fludarabine-Based Reduced-Intensity Conditioning Regimen for Hematopoietic Stem Cell Transplantation in a Pediatric Patient with Sickle Cell Disease: A Case Report. Int J Hematol Oncol Stem Cell Res 2024; 18:104-109. [PMID: 38680715 PMCID: PMC11055425 DOI: 10.18502/ijhoscr.v18i1.14750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Accepted: 11/19/2022] [Indexed: 05/01/2024] Open
Abstract
Reduced-intensity conditioning (RIC) regimens have the potential to decrease toxicities related to hematopoietic stem cell transplantation (HCT) in patients with sickle cell disease (SCD). While initial results may have been acceptable in adults and young adults, there are no well-established strategies in children with SCD. Here, it is described the clinical course of two children with symptomatic SCD who have successfully undergone HSCT using Fludarabin-based conditioning.
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Affiliation(s)
- Natalia Builes
- Hospital Pablo Tobón Uribe, Cll 78b #69-240, Medellín, Colombia
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3
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Elnaggar M, Shenoy S. Hyperthyroidism following transplantation and SARS-CoV-2 exposure. Pediatr Blood Cancer 2023; 70:e30713. [PMID: 37792314 DOI: 10.1002/pbc.30713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Revised: 09/23/2023] [Accepted: 09/25/2023] [Indexed: 10/05/2023]
Affiliation(s)
| | - Shalini Shenoy
- Department of Pediatrics, Washington University School of Medicine, St. Louis, Missouri, USA
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4
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Inam Z, Tisdale JF, Leonard A. Outcomes and long-term effects of hematopoietic stem cell transplant in sickle cell disease. Expert Rev Hematol 2023; 16:879-903. [PMID: 37800996 DOI: 10.1080/17474086.2023.2268271] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2023] [Accepted: 10/04/2023] [Indexed: 10/07/2023]
Abstract
INTRODUCTION Hematopoietic stem cell transplant (HSCT) is the only readily available curative option for sickle cell disease (SCD). Cure rates following human leukocyte antigen (HLA)-matched related donor HSCT with myeloablative or non-myeloablative conditioning are >90%. Alternative donor sources, including haploidentical donor and autologous with gene therapy, expand donor options but are limited by inferior outcomes, limited data, and/or shorter follow-up and therefore remain experimental. AREAS COVERED Outcomes are improving with time, with donor type and conditioning regimens having the greatest impact on long-term complications. Patients with stable donor engraftment do not experience SCD-related symptoms and have stabilization or improvement of end-organ pathology; however, the long-term effects of curative strategies remain to be fully established and have significant implications in a patient's decision to seek therapy. This review covers currently published literature on HSCT outcomes, including organ-specific outcomes implicated in SCD, as well as long-term effects. EXPERT OPINION HSCT, both allogeneic and autologous gene therapy, in the SCD population reverses the sickle phenotype, prevents further organ damage, can resolve prior organ dysfunction in both pediatric and adult patients. Data support greater success with HSCT at a younger age, thus, curative therapies should be discussed early in the patient's life.
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Affiliation(s)
- Zaina Inam
- Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
- Center for Cancer and Blood Disorders, Children's National Hospital, Washington, DC, USA
| | - John F Tisdale
- Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
| | - Alexis Leonard
- Cellular and Molecular Therapeutics Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, MD, USA
- Department of Hematology, St. Jude Children's Research Hospital, Memphis, TN, USA
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5
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Stenger EO, Watkins B, Rogowski K, Chiang KY, Haight A, Leung K, Qayed M, Raghunandan S, Suessmuth Y, Kean L, Horan J. Abatacept GVHD prophylaxis in unrelated hematopoietic cell transplantation for pediatric bone marrow failure. Blood Adv 2023; 7:2196-2205. [PMID: 36724508 PMCID: PMC10196963 DOI: 10.1182/bloodadvances.2022008545] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 11/28/2022] [Accepted: 11/28/2022] [Indexed: 02/03/2023] Open
Abstract
Hematopoietic cell transplantation (HCT) is the only readily available cure for many life-threatening pediatric nonmalignant diseases (NMD), but most patients lack a matched related donor and are at higher risk for graft-versus-host disease (GVHD). Use of abatacept (Aba) to target donor T-cell activation has been safe and effective in preventing GVHD after unrelated donor (URD) HCT for malignant diseases (Aba2 trial). Our primary objective was to evaluate the tolerability of Aba added to standard GVHD prophylaxis (cyclosporine and mycophenolate mofetil) in pediatric patients with NMD undergoing URD HCT. In this single-arm, single-center phase 1 trial, 10 patients receiving reduced intensity or nonmyeloablative conditioning underwent URD HCT. Immune reconstitution was assessed longitudinally via flow cytometry and compared to pediatric patients on Aba2. Nine patients successfully engrafted, with 1 primary graft rejection in the setting of inadequate cell dose; secondary graft rejection occurred in 1 patient with concurrent cytomegalovirus viremia. Two deaths occurred, both unrelated to Aba. One patient developed probable posttransplant lymphoproliferative disease, responsive to rituximab and immune suppression withdrawal. No patients developed severe acute or chronic GVHD, and 8 patients were off systemic immunosuppression at 1 year. Immune reconstitution did not appear to be impacted by Aba, and preservation of naïve relative to effector memory CD4+ T cells was seen akin to Aba2. Thus, 4 doses of Aba were deemed tolerable in pediatric patients with NMD following URD HCT, with encouraging preliminary efficacy and supportive immune correlatives in this NMD cohort.
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Affiliation(s)
- Elizabeth O. Stenger
- Division of Pediatric Hematology/Oncology, Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Emory University, Atlanta, GA
| | - Benjamin Watkins
- Division of Pediatric Hematology/Oncology, Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Emory University, Atlanta, GA
| | - Kelsey Rogowski
- Division of Pediatric Hematology/Oncology, Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Emory University, Atlanta, GA
| | - Kuang-Yueh Chiang
- Division of Pediatric Hematology/Oncology, University of Toronto/The Hospital for Sick Children, Toronto, Canada
| | - Ann Haight
- Division of Pediatric Hematology/Oncology, Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Emory University, Atlanta, GA
| | - Kathryn Leung
- Division of Pediatric Hematology/Oncology, Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Emory University, Atlanta, GA
| | - Muna Qayed
- Division of Pediatric Hematology/Oncology, Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Emory University, Atlanta, GA
| | - Sharmila Raghunandan
- Division of Pediatric Hematology/Oncology, Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Emory University, Atlanta, GA
| | - Yvonne Suessmuth
- Division of Pediatric Hematology/Oncology, Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Emory University, Atlanta, GA
| | - Leslie Kean
- Division of Pediatric Hematology/Oncology, Dana-Farber/Boston Children’s Hospital, Boston, MA
| | - John Horan
- Division of Pediatric Hematology/Oncology, Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Emory University, Atlanta, GA
- Division of Pediatric Hematology/Oncology, Dana-Farber/Boston Children’s Hospital, Boston, MA
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6
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Hamada M, Muramatsu H, Torii Y, Suzuki K, Narita A, Yoshida T, Imaya M, Yamamori A, Wakamatsu M, Miwata S, Narita K, Kataoka S, Kawashima N, Taniguchi R, Nishikawa E, Nishio N, Ito Y, Kojima S, Takahashi Y. Human leukocyte antigen 7/8-matched unrelated bone marrow transplantation using anti-thymocyte globulin in children. Int J Hematol 2023:10.1007/s12185-023-03571-5. [PMID: 36881377 DOI: 10.1007/s12185-023-03571-5] [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: 10/03/2022] [Revised: 02/18/2023] [Accepted: 02/19/2023] [Indexed: 03/08/2023]
Abstract
Human leukocyte antigen (HLA) mismatched unrelated donor transplantation is associated with an increased risk of graft-versus-host disease, graft failure, and infection, which increases post-transplant morbidity and mortality. In this single-center retrospective study, outcomes were evaluated in 30 consecutive children who underwent bone marrow transplantation (BMT) from HLA 1 allele-mismatched (HLA 7/8-matched) unrelated donors with rabbit anti-thymocyte globulin (rATG) as graft-versus-host disease (GVHD) prophylaxis. The 3-year overall survival (OS), event-free survival (EFS), and GVHD-relapse-free survival rates were 91.7% (95% CI 70.5%-91.9%), 88.3% (95% CI 67.5%-96.1%), and 73.9% (95% CI 52.4%-86.8%), respectively. Grade II-IV and III-IV acute GVHD occurred in 10 (33%) and 2 (7.0%) patients, respectively. The 3-year cumulative incidence of chronic GVHD was 7.8%. No fatal viral infections occurred. The study results show the feasibility of HLA 7/8-matched unrelated BMT with ATG to achieve favorable outcomes and acceptable GVHD, especially for patients who lack a fully matched donor.
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Affiliation(s)
- Motoharu Hamada
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, Aichi, 466-8550, Japan
| | - Hideki Muramatsu
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, Aichi, 466-8550, Japan.
| | - Yuka Torii
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, Aichi, 466-8550, Japan
| | - Kyogo Suzuki
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, Aichi, 466-8550, Japan
| | - Atsushi Narita
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, Aichi, 466-8550, Japan
| | - Taro Yoshida
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, Aichi, 466-8550, Japan
| | - Masayuki Imaya
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, Aichi, 466-8550, Japan
| | - Ayako Yamamori
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, Aichi, 466-8550, Japan
| | - Manabu Wakamatsu
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, Aichi, 466-8550, Japan
| | - Shunsuke Miwata
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, Aichi, 466-8550, Japan
| | - Kotaro Narita
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, Aichi, 466-8550, Japan
| | - Shinsuke Kataoka
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, Aichi, 466-8550, Japan
| | - Nozomu Kawashima
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, Aichi, 466-8550, Japan
| | - Rieko Taniguchi
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, Aichi, 466-8550, Japan
| | - Eri Nishikawa
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, Aichi, 466-8550, Japan
| | - Nobuhiro Nishio
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, Aichi, 466-8550, Japan.,Center for Advanced Medicine and Clinical Research, Nagoya University Hospital, Nagoya, Japan
| | - Yoshinori Ito
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, Aichi, 466-8550, Japan
| | - Seiji Kojima
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, Aichi, 466-8550, Japan
| | - Yoshiyuki Takahashi
- Department of Pediatrics, Nagoya University Graduate School of Medicine, 65 Tsurumai-Cho, Showa-Ku, Nagoya, Aichi, 466-8550, Japan.
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7
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Light J, Boucher M, Baskin-Miller J, Winstead M. Managing the Cerebrovascular Complications of Sickle Cell Disease: Current Perspectives. J Blood Med 2023; 14:279-293. [PMID: 37082003 PMCID: PMC10112470 DOI: 10.2147/jbm.s383472] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Accepted: 03/31/2023] [Indexed: 04/22/2023] Open
Abstract
The importance of protecting brain function for people with sickle cell disease (SCD) cannot be overstated. SCD is associated with multiple cerebrovascular complications that threaten neurocognitive function and life. Without screening and preventive management, 11% of children at 24% of adults with SCD have ischemic or hemorrhagic strokes. Stroke screening in children with SCD is well-established using transcranial Doppler ultrasound (TCD). TCD velocities above 200 cm/s significantly increase the risk of stroke, which can be prevented using chronic red blood cell (RBC) transfusion. RBC transfusion is also the cornerstone of acute stroke management and secondary stroke prevention. Chronic transfusion requires long-term management of complications like iron overload. Hydroxyurea can replace chronic transfusions for primary stroke prevention in a select group of patients or in populations where chronic transfusions are not feasible. Silent cerebral infarction (SCI) is even more common than stroke, affecting 39% of children and more than 50% of adults with SCD; management of SCI is individualized and includes careful neurocognitive evaluation. Hematopoietic stem cell transplant prevents cerebrovascular complications, despite the short- and long-term risks. Newer disease-modifying agents like voxelotor and crizanlizumab, as well as gene therapy, may treat cerebrovascular complications, but these approaches are investigational.
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Affiliation(s)
- Jennifer Light
- Pediatric Hematology-Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Maria Boucher
- Pediatric Hematology-Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Jacquelyn Baskin-Miller
- Pediatric Hematology-Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Mike Winstead
- Pediatric Hematology-Oncology, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
- Correspondence: Mike Winstead, Division of Pediatric Hematology-Oncology, University of North Carolina at Chapel Hill, 101 Manning Drive, Chapel Hill, NC, USA, Tel +1 919-966-1178, Fax +1 919-966-7629, Email
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8
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Flinn AM, Gennery AR. Recent advances in graft-versus-host disease. Fac Rev 2023; 12:4. [PMID: 36923700 PMCID: PMC10009889 DOI: 10.12703/r/12-4] [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: 03/08/2023] Open
Abstract
Acute and chronic graft-versus-host disease (GVHD) continue to present a significant challenge to physicians, accounting for considerable haematopoietic stem cell transplant (HSCT)-related morbidity and mortality, particularly those patients with steroid-refractory disease. In this review, we discuss recent advances in understanding the underlying pathophysiology, prevention and management of acute and chronic GVHD. Barriers to progress include the difficulty in obtaining high-quality evidence with sufficient patient numbers to identify optimal preventative and treatment strategies, with the heterogeneity of multiple patient, donor, graft and transplant-related factors, in addition to limited availability of human tissue to study the underlying pathophysiology, particularly in steroid-refractory disease. Continued collaborative efforts to improve our understanding of the pathophysiology involved, particularly in steroid-refractory disease, identification of biomarkers to permit risk stratification, and further well-designed randomised clinical trials are essential to help physicians determine optimal GVHD preventative and treatment strategies for each individual patient.
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Affiliation(s)
- Aisling M Flinn
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
- Great North Children’s Hospital, Newcastle upon Tyne, UK
| | - Andrew R Gennery
- Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK
- Great North Children’s Hospital, Newcastle upon Tyne, UK
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9
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Massalska M, Ciechomska M, Kuca-Warnawin E, Burakowski T, Kornatka A, Radzikowska A, Pawlak D, Muz B, Loniewska-Lwowska A, Palucha A, Maldyk P, Maslinski W. Effectiveness of Soluble CTLA-4-Fc in the Inhibition of Bone Marrow T-Cell Activation in Context of Indoleamine 2.3-Dioxygenase (IDO) and CD4 +Foxp3 + Treg Induction. J Inflamm Res 2022; 15:6813-6829. [PMID: 36578517 PMCID: PMC9792113 DOI: 10.2147/jir.s359775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Accepted: 09/06/2022] [Indexed: 12/24/2022] Open
Abstract
Background Rheumatoid arthritis (RA) is a chronic autoimmune disease with systemic inflammation finally resulting in damaged joints. One of the RA development models suggests bone marrow (BM) as a place of inflammation development further leading to disease progression. We aimed to investigate the potential of CTLA-4-Fc molecule in inducing tolerogenic milieu in BM measured as indoleamine 2,3-dioxygenase (IDO) expression, CD4+Foxp3+ Treg induction, and T cell activation control. The expression of IDO-pathway genes was also examined in monocytes to estimate the tolerogenic potential in the periphery. Methods Bone marrow mononuclear cells (BMMC) were stimulated by pro-inflammatory cytokines and CTLA-4-Fc. Next IDO expression, CD4+CD69+ and CD4+Foxp3+ percentage were estimated by PCR and FACS staining, respectively. Enzymatic activity of IDO was confirmed by HPLC in BM plasma and blood plasma. Genes expressed in IDO-pathway were analyzed by NGS in peripheral monocytes isolated from RA patients and healthy controls. Results We found that CTLA-4-Fc and IFN-γ stimulation results in IDO production by BMMC. CTLA-4-Fc induced tryptophan catabolism can inhibit mitogen-induced CD4+ T cells activation without influencing CD8+ cells, but did not control CD25 nor Foxp3 expression in BM cells. Significantly higher expression of selected IDO-pathway genes was detected on peripheral monocytes isolated from RA as compared to healthy controls. Conclusion This study sheds light on some immunosuppression aspects present or induced in BM. The potential of IDO-mediated pathways were confirmed in the periphery, what may represent the promising candidates for therapeutic strategies in RA.
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Affiliation(s)
- Magdalena Massalska
- Department of Pathophysiology and Immunology, National Institute of Geriatrics, Rheumatology, and Rehabilitation (NIGRiR), Warsaw, 02-637, Poland,Correspondence: Magdalena Massalska, Department of Pathophysiology and Immunology, National Institute of Geriatrics, Rheumatology, and Rehabilitation, Spartanska 1, Warsaw, 02-637, Poland, Tel/Fax +48 22 670 94 94, Email
| | - Marzena Ciechomska
- Department of Pathophysiology and Immunology, National Institute of Geriatrics, Rheumatology, and Rehabilitation (NIGRiR), Warsaw, 02-637, Poland
| | - Ewa Kuca-Warnawin
- Department of Pathophysiology and Immunology, National Institute of Geriatrics, Rheumatology, and Rehabilitation (NIGRiR), Warsaw, 02-637, Poland
| | - Tomasz Burakowski
- Department of Pathophysiology and Immunology, National Institute of Geriatrics, Rheumatology, and Rehabilitation (NIGRiR), Warsaw, 02-637, Poland
| | - Anna Kornatka
- Department of Pathophysiology and Immunology, National Institute of Geriatrics, Rheumatology, and Rehabilitation (NIGRiR), Warsaw, 02-637, Poland
| | - Anna Radzikowska
- Department of Pathophysiology and Immunology, National Institute of Geriatrics, Rheumatology, and Rehabilitation (NIGRiR), Warsaw, 02-637, Poland
| | - Dariusz Pawlak
- Department of Pharmacodynamics, Medical University of Bialystok, Bialystok, 15-222, Poland
| | - Barbara Muz
- Department of Radiation Oncology, Cancer Biology Division, Washington University School of Medicine, St. Louis, MO, 63108, USA
| | | | | | - Pawel Maldyk
- Department of Rheumoorthopaedic Surgery, National Institute of Geriatrics, Rheumatology, and Rehabilitation (NIGRiR), Warsaw, 02-637, Poland,Clinical Department of Orthopaedic and Traumatology of Locomotor System, Enfant-Jesus Clinical Hospital, Warsaw, 02-005, Poland
| | - Wlodzimierz Maslinski
- Department of Pathophysiology and Immunology, National Institute of Geriatrics, Rheumatology, and Rehabilitation (NIGRiR), Warsaw, 02-637, Poland
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10
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Hulbert ML, King AA, Shenoy S. Organ function indications and potential improvements following curative therapy for sickle cell disease. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2022; 2022:277-282. [PMID: 36485131 PMCID: PMC9820741 DOI: 10.1182/hematology.2022000372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Curative therapies for sickle cell disease include allogeneic hematopoietic stem cell transplantation (HSCT) and gene-modified autologous stem cell transplantation. HSCT has been used for 30 years with success measured by engraftment, symptom control, graft-vs-host disease (GVHD) risk, organ toxicity, and immune reconstitution. While human leukocyte antigen-matched sibling donor (MSD) transplants have excellent outcomes, alternate donor transplants (unrelated/haploidentical) are just beginning to overcome GVHD and engraftment hurdles to match MSD. Gene therapy, a newly developed treatment, is undergoing careful evaluation in many trials with varying approaches. The risk/benefit ratio to the patient in relation to outcomes, toxicities, and mortality risk drives eligibility for curative interventions. Consequently, eligibility criteria for MSD transplants can be less stringent, especially in the young. Posttransplant outcome analysis after the "cure" with respect to organ function recovery is essential. While established damage such as stroke is irreversible, transplant can help stabilize (pulmonary function), prevent further deterioration (stroke), improve (neurocognition), and protect unaffected organs. Tracking organ functions postintervention uniformly between clinical trials and for adequate duration is essential to answer safety and efficacy questions related to curative therapies. Age-appropriate application/outcome analyses of such therapies will be the ultimate goal in overcoming this disease.
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11
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Watkins B, Williams KM. Controversies and expectations for the prevention of GVHD: A biological and clinical perspective. Front Immunol 2022; 13:1057694. [PMID: 36505500 PMCID: PMC9726707 DOI: 10.3389/fimmu.2022.1057694] [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: 09/29/2022] [Accepted: 11/03/2022] [Indexed: 11/24/2022] Open
Abstract
Severe acute and chronic graft versus host disease (GVHD) remains a major cause of morbidity and mortality after allogeneic hematopoietic cell transplantation. Historically, cord blood and matched sibling transplantation has been associated with the lowest rates of GVHD. Newer methods have modified the lymphocyte components to minimize alloimmunity, including: anti-thymocyte globulin, post-transplant cyclophosphamide, alpha/beta T cell depletion, and abatacept. These agents have shown promise in reducing severe GVHD, however, can be associated with increased risks of relapse, graft failure, infections, and delayed immune reconstitution. Nonetheless, these GVHD prophylaxis strategies have permitted expansion of donor sources, especially critical for those of non-Caucasian decent who previously lacked transplant options. This review will focus on the biologic mechanisms driving GVHD, the method by which each agent impacts these activated pathways, and the clinical consequences of these modern prophylaxis approaches. In addition, emerging novel targeted strategies will be described. These GVHD prophylaxis approaches have revolutionized our ability to increase access to transplant and have provided important insights into the biology of GVHD and immune reconstitution.
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12
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Across the Myeloablative Spectrum: Hematopoietic Cell Transplant Conditioning Regimens for Pediatric Patients with Sickle Cell Disease. J Clin Med 2022; 11:jcm11133856. [PMID: 35807140 PMCID: PMC9267729 DOI: 10.3390/jcm11133856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 06/18/2022] [Accepted: 06/22/2022] [Indexed: 11/16/2022] Open
Abstract
One out of every five hundred African American children in the United States has sickle cell disease (SCD). While multiple disease-modifying therapies are available, hematopoietic cell transplantation (HCT) remains the only curative option for children with SCD. HLA-matched sibling HCT has demonstrated excellent efficacy, but its availability remains limited; alternative donor strategies are increasingly explored. While Busulfan-Cyclophosphamide has become the most widespread conditioning regimen employed in HCT for pediatric SCD, many other regimens have been examined. This review explores different conditioning regimens across the intensity spectrum: from myeloablative to non-myeloablative. We describe survival and organ function outcomes in pediatric SCD patients who have received HCT and discuss the strengths and weaknesses of the various conditioning intensities. Finally, we posit novel directions in allogeneic HCT for SCD.
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Krishnamurti L. Hematopoietic cell transplantation for sickle cell disease: updates and future directions. HEMATOLOGY. AMERICAN SOCIETY OF HEMATOLOGY. EDUCATION PROGRAM 2021; 2021:181-189. [PMID: 34889368 PMCID: PMC8791142 DOI: 10.1182/hematology.2021000251] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Excellent outcomes in hematopoietic cell transplantation (HCT) from HLA-identical siblings, improvements in conditioning regimens, novel graft-versus-host disease prophylaxis, and the availability of alternative donors have all contributed to the increased applicability and acceptability of HCT for sickle cell disease (SCD). In young children with symptomatic SCD with an available HLA-identical related donor, HCT should be carefully considered. HCT from alternative donors is typically undertaken only in patients with severe symptoms, causing or likely to cause organ damage, and in the context of clinical trials. Patients undergoing HCT for SCD require careful counseling and preparation. They require careful monitoring of unique organ toxicities and complications during HCT. Patients must be prospectively followed for a prolonged time to determine the long-term outcomes and late effects of HCT for SCD. Thus, there is a need for a universal, longitudinal clinical registry to follow patients after HCT for SCD in conjunction with individuals who do not receive HCT to compare outcomes. Antibody-based conditioning and ex-vivo umbilical cord blood expansion are likely to improve the availability and acceptability of HCT. In addition, new disease-modifying drugs and the emerging option of the autologous transplantation of gene-modified hematopoietic progenitor cells are likely to expand the available therapeutic options and make decision-making by patients, physicians, and caregivers even more complicated. Future efforts must also focus on determining the impact of socioeconomic status on access to and outcomes of HCT and the long-term impact of HCT on patients, families, and society.
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Affiliation(s)
- Lakshmanan Krishnamurti
- Correspondence Lakshmanan Krishnamurti, Children's Healthcare of Atlanta-Egleston, 1405 Clifton Road NE, Atlanta, GA 30322; e-mail:
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14
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Stable to improved cardiac and pulmonary function in children with high-risk sickle cell disease following haploidentical stem cell transplantation. Bone Marrow Transplant 2021; 56:2221-2230. [PMID: 33958740 PMCID: PMC8416746 DOI: 10.1038/s41409-021-01298-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 03/23/2021] [Accepted: 04/08/2021] [Indexed: 02/07/2023]
Abstract
Children with sickle cell disease (SCD) are at high-risk of progressive, chronic pulmonary and cardiac dysfunction. In this prospective multicenter Phase II trial of myeloimmunoablative conditioning followed by haploidentical stem cell transplantation in children with high-risk SCD, 19 patients, 2.0-21.0 years of age, were enrolled with one or more of the following: history of (1) overt stroke; (2) silent stroke; (3) elevated transcranial Doppler velocity; (4) multiple vaso-occlusive crises; and/or (5) two or more acute chest syndromes and received haploidentical transplants from 18 parental donors. Cardiac and pulmonary centralized cores were established. Pulmonary function results were expressed as percent of the median of healthy reference cohorts, matched for age, sex, height and race. At 2 years, pulmonary functions including forced expiratory volume (FEV), FEV1/ forced vital capacity (FVC), total lung capacity (TLC), diffusing capacity of lung for carbon monoxide (DLCO) were stable to improved compared to baseline values. Importantly, specific airway conductance was significantly improved at 2 years (p < 0.004). Left ventricular systolic function (fractional shortening) and tricuspid regurgitant velocity were stable at 2 years. These results demonstrate that haploidentical stem cell transplantation can stabilize or improve cardiopulmonary function in patients with SCD.
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15
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Blood and Marrow Transplant Clinical Trials Network State of the Science Symposium 2021: Looking Forward as the Network Celebrates its 20th Year. Transplant Cell Ther 2021; 27:885-907. [PMID: 34461278 PMCID: PMC8556300 DOI: 10.1016/j.jtct.2021.08.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 08/15/2021] [Accepted: 08/15/2021] [Indexed: 11/22/2022]
Abstract
In 2021 the BMT CTN held the 4th State of the Science Symposium where the deliberations of 11 committees concerning major topics pertinent to a particular disease, modality, or complication of transplant, as well as two committees to consider clinical trial design and inclusion, diversity, and access as cross-cutting themes were reviewed. This article summarizes the individual committee reports and their recommendations on the highest priority questions in hematopoietic stem cell transplant and cell therapy to address in multicenter trials.
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John TD, Friend B, Yassine K, Sasa G, Bhar S, Salem B, Omer B, Craddock J, Doherty E, Martinez C, Heslop HE, Krance RA, Leung K. Matched related hematopoietic cell transplant for sickle cell disease with alemtuzumab: the Texas Children's Hospital experience. Bone Marrow Transplant 2021; 56:2797-2803. [PMID: 34274957 DOI: 10.1038/s41409-021-01415-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Revised: 07/06/2021] [Accepted: 07/08/2021] [Indexed: 11/09/2022]
Abstract
Serotherapeutic agents facilitate engraftment and prevent graft-versus-host disease (GVHD) following hematopoietic stem cell transplant. Anti-thymocyte globulin is generally added to conditioning chemotherapy for matched related donor transplant (MRD-HCT) for sickle cell disease (SCD). Alemtuzumab, however, is appealing due to its broad lymphocyte killing that may achieve very low rejection and GVHD rates. To assess the impact of alemtuzumab in MRD-HCT for SCD, we retrospectively reviewed transplant-related outcomes and markers of immunity in 38 consecutive patients at Texas Children's Hospital having received myeloablative conditioning with alemtuzumab. Median follow-up was 4.8 years (range: 0.2-17). All patients engrafted. Donor chimerism was mixed in 47.1% of patients at ≥2-years. Donor chimerism <50% was uncommon (n = 2). One patient with low myeloid chimerism (19%) had sickle-related hemolysis at 10-years. Incidence of acute GVHD grade II-IV (5.3%) and extensive chronic GVHD (2.8%) was very low. Five-year event-free survival (EFS) and composite chronic GVHD-EFS were excellent at 94.7% (95% CI: 80.3, 98.6) and 89.2% (95% CI: 73.7, 95.8), respectively. Infections did not contribute to mortality although cytomegalovirus reactivation occurred commonly in the first 3 months after transplant. Our data suggest potential for alemtuzumab in myeloablative transplant for children with SCD although further evaluation in older patients and with unrelated donors is warranted.
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Affiliation(s)
- Tami D John
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, USA.
| | - Brian Friend
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, USA
| | - Khaled Yassine
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, USA
| | - Ghadir Sasa
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, USA
| | - Saleh Bhar
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, USA
| | - Baheyeldin Salem
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, USA
| | - Bilal Omer
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, USA
| | - John Craddock
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, USA
| | - Erin Doherty
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, USA
| | - Caridad Martinez
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, USA
| | - Helen E Heslop
- Center for Cell and Gene Therapy, Baylor College of Medicine, Houston Methodist Hospital, Houston, TX, USA
| | - Robert A Krance
- Center for Cell and Gene Therapy, Baylor College of Medicine, Texas Children's Hospital, Houston, TX, USA
| | - Kathryn Leung
- Children's Healthcare of Atlanta, Emory University School of Medicine, Atlanta, GA, USA
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17
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Shaw BE, Jimenez-Jimenez AM, Burns LJ, Logan BR, Khimani F, Shaffer BC, Shah NN, Mussetter A, Tang XY, McCarty JM, Alavi A, Farhadfar N, Jamieson K, Hardy NM, Choe H, Ambinder RF, Anasetti C, Perales MA, Spellman SR, Howard A, Komanduri KV, Luznik L, Norkin M, Pidala JA, Ratanatharathorn V, Confer DL, Devine SM, Horowitz MM, Bolaños-Meade J. National Marrow Donor Program-Sponsored Multicenter, Phase II Trial of HLA-Mismatched Unrelated Donor Bone Marrow Transplantation Using Post-Transplant Cyclophosphamide. J Clin Oncol 2021; 39:1971-1982. [PMID: 33905264 PMCID: PMC8260905 DOI: 10.1200/jco.20.03502] [Citation(s) in RCA: 94] [Impact Index Per Article: 31.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Revised: 02/01/2021] [Accepted: 03/16/2021] [Indexed: 12/20/2022] Open
Abstract
PURPOSE Hematopoietic cell transplantation (HCT) is curative for hematologic disorders, but outcomes are historically inferior when using HLA-mismatched donors. Despite unrelated donor registries listing > 38 million volunteers, 25%-80% of US patients lack an HLA-matched unrelated donor, with significant disparity across ethnic groups. We hypothesized that HCT with a mismatched unrelated donor (MMUD) using post-transplant cyclophosphamide (PTCy), a novel strategy successful in overcoming genetic disparity using mismatched related donors, would be feasible and increase access to HCT. PATIENTS AND METHODS We performed a prospective phase II study of MMUD bone marrow HCT with PTCy for patients with hematologic malignancies. The primary end point was 1-year overall survival (OS), hypothesized to be 65% or better. 80 patients enrolled at 11 US transplant centers (December 2016-March 2019). Following myeloablative or reduced-intensity conditioning-based HCT, patients received PTCy on days +3, +4, with sirolimus and mycophenolate mofetil starting on day +5. We compared outcomes to Center for International Blood and Marrow Transplant Research contemporary controls receiving PTCy. RESULTS Notably, 48% of patients enrolled were ethnic minorities. 39% of pairs were matched for 4-6 out of 8 HLA alleles. The primary end point was met, with 1-year OS of 76% (90% CI, 67.3 to 83.3) in the entire cohort, and 72% and 79% in the myeloablative and reduced-intensity conditioning strata, respectively. Secondary end points related to engraftment and graft-versus-host-disease were reached. Multivariate analysis comparing the study group with other mismatched HCT controls found no significant differences in OS. CONCLUSION Our prospective study demonstrates the feasibility and effectiveness of HCT with an MMUD in the setting of PTCy. Remarkably, nearly half of the study participants belonged to an ethnic minority population, suggesting this approach may significantly expand access to HCT.
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Affiliation(s)
- Bronwen E. Shaw
- Center for International Blood and Marrow Transplant Research/Medical College of Wisconsin, Milwaukee, WI
| | | | - Linda J. Burns
- Center for International Blood and Marrow Transplant Research/Medical College of Wisconsin, Milwaukee, WI
| | - Brent R. Logan
- Center for International Blood and Marrow Transplant Research/Medical College of Wisconsin, Milwaukee, WI
| | - Farhad Khimani
- H. Lee Moffitt Cancer Center and Research Institute, Tampa, FL
| | - Brian C. Shaffer
- Adult Bone Marrow Transplant Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Nirav N. Shah
- Department of Medicine, Medical College of Wisconsin, Milwaukee, WI
| | - Alisha Mussetter
- Center for International Blood and Marrow Transplant Research/National Marrow Donor Program, Minneapolis, MN
| | - Xiao-Ying Tang
- Center for International Blood and Marrow Transplant Research/Medical College of Wisconsin, Milwaukee, WI
| | - John M. McCarty
- Massey Cancer Center Bone Marrow Transplant Program, Virginia Commonwealth University, Richmond, VA
| | - Asif Alavi
- Department of Oncology, Blood and Marrow Stem Cell Transplant Program, Karmanos Cancer Institute/Wayne State University, Detroit, MI
| | - Nosha Farhadfar
- Division of Hematology/Oncology, University of Florida College of Medicine, Gainesville, FL
| | | | - Nancy M. Hardy
- Greenebaum Cancer Center, University of Maryland, Baltimore, MD
| | - Hannah Choe
- James Comprehensive Cancer Center, The Ohio State University Wexner Medical Center, Columbus, OH
| | - Richard F. Ambinder
- The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | | | - Miguel-Angel Perales
- Adult Bone Marrow Transplant Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY
| | - Stephen R. Spellman
- Center for International Blood and Marrow Transplant Research/National Marrow Donor Program, Minneapolis, MN
| | - Alan Howard
- Center for International Blood and Marrow Transplant Research/National Marrow Donor Program, Minneapolis, MN
| | | | - Leo Luznik
- The Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD
| | - Maxim Norkin
- LifeSouth Community Blood Centers, Baptist MD Anderson Cancer Center, Jacksonville, FL
| | | | - Voravit Ratanatharathorn
- Department of Oncology, Blood and Marrow Stem Cell Transplant Program, Karmanos Cancer Institute/Wayne State University, Detroit, MI
| | - Dennis L. Confer
- Center for International Blood and Marrow Transplant Research/National Marrow Donor Program, Minneapolis, MN
| | - Steven M. Devine
- Center for International Blood and Marrow Transplant Research/National Marrow Donor Program, Minneapolis, MN
| | - Mary M. Horowitz
- Center for International Blood and Marrow Transplant Research/Medical College of Wisconsin, Milwaukee, WI
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Koniali L, Lederer CW, Kleanthous M. Therapy Development by Genome Editing of Hematopoietic Stem Cells. Cells 2021; 10:1492. [PMID: 34198536 PMCID: PMC8231983 DOI: 10.3390/cells10061492] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2021] [Revised: 06/09/2021] [Accepted: 06/10/2021] [Indexed: 12/12/2022] Open
Abstract
Accessibility of hematopoietic stem cells (HSCs) for the manipulation and repopulation of the blood and immune systems has placed them at the forefront of cell and gene therapy development. Recent advances in genome-editing tools, in particular for clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated protein (Cas) and CRISPR/Cas-derived editing systems, have transformed the gene therapy landscape. Their versatility and the ability to edit genomic sequences and facilitate gene disruption, correction or insertion, have broadened the spectrum of potential gene therapy targets and accelerated the development of potential curative therapies for many rare diseases treatable by transplantation or modification of HSCs. Ongoing developments seek to address efficiency and precision of HSC modification, tolerability of treatment and the distribution and affordability of corresponding therapies. Here, we give an overview of recent progress in the field of HSC genome editing as treatment for inherited disorders and summarize the most significant findings from corresponding preclinical and clinical studies. With emphasis on HSC-based therapies, we also discuss technical hurdles that need to be overcome en route to clinical translation of genome editing and indicate advances that may facilitate routine application beyond the most common disorders.
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Affiliation(s)
- Lola Koniali
- Department of Molecular Genetics Thalassemia, The Cyprus Institute of Neurology and Genetics, Nicosia 2371, Cyprus; (L.K.); (M.K.)
| | - Carsten W. Lederer
- Department of Molecular Genetics Thalassemia, The Cyprus Institute of Neurology and Genetics, Nicosia 2371, Cyprus; (L.K.); (M.K.)
- Cyprus School of Molecular Medicine, Nicosia 2371, Cyprus
| | - Marina Kleanthous
- Department of Molecular Genetics Thalassemia, The Cyprus Institute of Neurology and Genetics, Nicosia 2371, Cyprus; (L.K.); (M.K.)
- Cyprus School of Molecular Medicine, Nicosia 2371, Cyprus
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Removal of CD276 + cells from haploidentical memory T-cell grafts significantly lowers the risk of GVHD. Bone Marrow Transplant 2021; 56:2336-2354. [PMID: 33976380 PMCID: PMC8486669 DOI: 10.1038/s41409-021-01307-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Revised: 03/27/2021] [Accepted: 04/12/2021] [Indexed: 01/08/2023]
Abstract
Detrimental graft-versus-host disease (GVHD) still remains a major cause of death in hematopoietic stem cell transplantation (HSCT). The recently explored depletion of naive cells from mobilized grafts (CD45RA depletion) has shown considerable promise, yet is unable to eliminate the incidence of GVHD. Analysis of CD45RA-depleted haploidentical mixed lymphocytes culture (haplo-MLC) revealed insufficient suppression of alloresponses in the CD4+ compartment and identified CD276 as a marker for alloreactive memory Th1 T cells. Conclusively, depleting CD276+ cells from CD45RA-depleted haplo-MLC significantly attenuated alloreactivity to recipient cells while increasing antiviral reactivity and maintaining anti-third party reactivity in vitro. To evaluate these findings in vivo, bulk, CD45RA-depleted, or CD45RA/CD276-depleted CD4+ T cells from HLA-DR4negative healthy humans were transplanted into NSG-Ab°DR4 mice, a sensitive human allo-GVHD model. Compellingly, CD45RA/CD276-depleted grafts from HLA-DR4negative donors or in vivo depletion of CD276+ cells after transplant of HLA-DR4negative memory CD4 T cells significantly delay the onset of GVHD symptoms and significantly alleviate its severity in NSG-Ab°DR4 mice. The clinical courses correlated with diminished Th1-cytokine secretion and downregulated CXCR6 expression of engrafted peripheral T cells. Collectively, mismatched HLA-mediated GVHD can be controlled by depleting recipient-specific CD276+ alloreacting T cells from the graft, highlighting its application in haplo-HSCT.
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20
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Introna M, Golay J. Tolerance to Bone Marrow Transplantation: Do Mesenchymal Stromal Cells Still Have a Future for Acute or Chronic GvHD? Front Immunol 2020; 11:609063. [PMID: 33362797 PMCID: PMC7759493 DOI: 10.3389/fimmu.2020.609063] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2020] [Accepted: 11/12/2020] [Indexed: 12/18/2022] Open
Abstract
Mesenchymal Stromal Cells (MSCs) are fibroblast-like cells of mesodermal origin present in many tissues and which have the potential to differentiate to osteoblasts, adipocytes and chondroblasts. They also have a clear immunosuppressive and tissue regeneration potential. Indeed, the initial classification of MSCs as pluripotent stem cells, has turned into their identification as stromal progenitors. Due to the relatively simple procedures available to expand in vitro large numbers of GMP grade MSCs from a variety of different tissues, many clinical trials have tested their therapeutic potential in vivo. One pathological condition where MSCs have been quite extensively tested is steroid resistant (SR) graft versus host disease (GvHD), a devastating condition that may occur in acute or chronic form following allogeneic hematopoietic stem cell transplantation. The clinical and experimental results obtained have outlined a possible efficacy of MSCs, but unfortunately statistical significance in clinical studies has only rarely been reached and effects have been relatively limited in most cases. Nonetheless, the extremely complex pathogenetic mechanisms at the basis of GvHD, the fact that studies have been conducted often in patients who had been previously treated with multiple lines of therapy, the variable MSC doses and schedules administered in different trials, the lack of validated potency assays and clear biomarkers, the difference in MSC sources and production methods may have been major factors for this lack of clear efficacy in vivo. The heterogeneity of MSCs and their different stromal differentiation potential and biological activity may be better understood through more refined single cell sequencing and proteomic studies, where either an “anti-inflammatory” or a more “immunosuppressive” profile can be identified. We summarize the pathogenic mechanisms of acute and chronic GvHD and the role for MSCs. We suggest that systematic controlled clinical trials still need to be conducted in the most promising clinical settings, using better characterized cells and measuring efficacy with specific biomarkers, before strong conclusions can be drawn about the therapeutic potential of these cells in this context. The same analysis should be applied to other inflammatory, immune or degenerative diseases where MSCs may have a therapeutic potential.
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Affiliation(s)
- Martino Introna
- Center of Cellular Therapy "G. Lanzani", Division of Haematology, Azienda Socio-Sanitaria Territoriale Papa Giovanni XXIII, Bergamo, Italy
| | - Josée Golay
- Center of Cellular Therapy "G. Lanzani", Division of Haematology, Azienda Socio-Sanitaria Territoriale Papa Giovanni XXIII, Bergamo, Italy.,Fondazione per la Ricerca Ospedale Maggiore, Bergamo, Italy
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21
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Krishnamurti L. Hematopoietic Cell Transplantation for Sickle Cell Disease. Front Pediatr 2020; 8:551170. [PMID: 33469520 PMCID: PMC7813811 DOI: 10.3389/fped.2020.551170] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Accepted: 11/16/2020] [Indexed: 12/11/2022] Open
Abstract
Sickle cell disease (SCD) is a severe autosomal recessively inherited disorder of the red blood cell characterized by erythrocyte deformation caused by the polymerization of the abnormal hemoglobin, which leads to erythrocyte deformation and triggers downstream pathological changes. These include abnormal rheology, vaso-occlusion, ischemic tissue damage, and hemolysis-associated endothelial dysfunction. These acute and chronic physiologic disturbances contribute to morbidity, organ dysfunction, and diminished survival. Hematopoietic cell transplantation (HCT) from HLA-matched or unrelated donors or haploidentical related donors or genetically modified autologous hematopoietic progenitor cells is performed with the intent of cure or long-term amelioration of disease manifestations. Excellent outcomes have been observed following HLA-identical matched related donor HCT. The majority of SCD patients do not have an available HLA-identical sibling donor. Increasingly, however, they have the option of undergoing HCT from unrelated HLA matched or related haploidentical donors. The preliminary results of transplantation of autologous hematopoietic progenitor cells genetically modified by adding a non-sickling gene or by genomic editing to increase expression of fetal hemoglobin are encouraging. These approaches are being evaluated in early-phase clinical trials. In performing HCT in patients with SCD, careful consideration must be given to patient and donor selection, conditioning and graft-vs.-host disease regimen, and pre-HCT evaluation and management during and after HCT. Sociodemographic factors may also impact awareness of and access to HCT. Further, there is a substantial decisional dilemma in HCT with complex tradeoffs between the possibility of amelioration of disease manifestations and early or late complications of HCT. The performance of HCT for SCD requires careful multidisciplinary collaboration and shared decision making between the physician and informed patients and caregivers.
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Affiliation(s)
- Lakshmanan Krishnamurti
- Aflac Cancer and Blood Disorders Center, Children's Healthcare of Atlanta, Emory University, Atlanta, GA, United States
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