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Pichler H, Sedlacek P, Meisel R, Beier R, Faraci M, Kalwak K, Ifversen M, Müller I, Stein J, Vettenranta K, Kropshofer G, Kolenova A, Karlhuber S, Glogova E, Poetschger U, Peters C, Suttorp M, Matthes-Leodolter S, Balduzzi A. Haematopoietic stem cell transplantation after reduced intensity conditioning in children and adolescents with chronic myeloid leukaemia: A prospective multicentre trial of the I-BFM Study Group. Br J Haematol 2024; 205:268-279. [PMID: 38803040 DOI: 10.1111/bjh.19535] [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: 03/25/2024] [Accepted: 05/09/2024] [Indexed: 05/29/2024]
Abstract
This prospective multicentre trial evaluated the safety and the efficacy of a thiotepa/melphalan-based reduced intensity conditioning (RIC) haematopoietic stem cell transplantation (HSCT) in children and adolescents with chronic myeloid leukaemia (CML) in chronic phase (CP). Thirty-two patients were transplanted from matched siblings or matched unrelated donors. In 22 patients, HSCT was performed due to insufficient molecular response or loss of response to first- or second-generation tyrosine kinase inhibitor (TKI), with pretransplant BCR::ABL1 transcripts ranging between 0.001% and 33%. The protocol included a BCR::ABL1-guided intervention with TKI retreatment in the first year and donor lymphocyte infusions (DLI) in the second-year post-transplant. All patients engrafted. The 1-year transplant-related mortality was 3% (confidence interval [CI]: 0%-6%). After a median follow-up of 6.3 years, 5-year overall survival and event-free survival are 97% (CI: 93%-100%) and 91% (CI: 79%-100%) respectively. The current 5-year leukaemia-free survival with BCR::ABL1 <0.01% is 97% (CI: 88%-100%) and the current TKI- and DLI-free survival is 95% (CI: 85%-100%). The incidence of chronic graft-versus-host disease (GvHD) was 32%, being severe in four patients (13%). At last follow-up, 31 patients are GvHD-free and have stopped immunosuppression. RIC HSCT following pretreatment with TKI is feasible and effective in children and adolescents with CP-CML with an excellent disease-free and TKI-free survival.
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Affiliation(s)
- Herbert Pichler
- Department of Paediatric Haematology and Oncology, St. Anna Children's Hospital, Vienna, Austria
- Department of Paediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria
- Children's Cancer Research Institute, Medical University of Vienna, Vienna, Austria
| | - Petr Sedlacek
- Department of Paediatric Haematology and Oncology, University Hospital Motol, Charles University, Prague, Czech Republic
| | - Roland Meisel
- Division of Pediatric Stem Cell Therapy, Department of Pediatric Oncology, Hematology and Clinical Immunology, Medical Faculty, Heinrich-Heine-University, Duesseldorf, Germany
| | - Rita Beier
- Department of Pediatric Hematology and Oncology, Hannover Medical School, Hannover, Germany
| | - Maura Faraci
- Hematopoietic Stem Cell Transplantation Unit, Department of Hematology and Oncology, IRCCS Institute G. Gaslini, Genoa, Italy
| | - Krzysztof Kalwak
- Clinical Department of Paediatric Bone Marrow Transplantation, Oncology and Haematology, Wrocław Medical University, Wrocław, Poland
| | - Marianne Ifversen
- Department of Paediatrics and Adolescent Medicine, Copenhagen University Hospital Rigshospitalet, Copenhagen, Denmark
| | - Ingo Müller
- Division of Pediatric Stem Cell Transplantation and Immunology, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Jerry Stein
- Department of Hematology-Oncology, Schneider Children's Medical Center of Israel, Petah Tikva, Israel
| | - Kim Vettenranta
- Paediatric Haemato-Oncology, University of Helsinki, Helsinki, Finland
| | - Gabriele Kropshofer
- Department of Pediatrics, Medical University of Innsbruck, Innsbruck, Austria
| | - Alexandra Kolenova
- Department of Pediatric Hematology and Oncology, Faculty of Medicine, Children's Haematology and Oncology Clinic, Comenius University in Bratislava, Bratislava, Slovakia
| | - Susanne Karlhuber
- Children's Cancer Research Institute, Medical University of Vienna, Vienna, Austria
| | - Evgenia Glogova
- Children's Cancer Research Institute, Medical University of Vienna, Vienna, Austria
| | - Ulrike Poetschger
- Department of Paediatric Haematology and Oncology, St. Anna Children's Hospital, Vienna, Austria
- Department of Paediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria
- Children's Cancer Research Institute, Medical University of Vienna, Vienna, Austria
| | - Christina Peters
- Department of Paediatric Haematology and Oncology, St. Anna Children's Hospital, Vienna, Austria
- Department of Paediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria
- Children's Cancer Research Institute, Medical University of Vienna, Vienna, Austria
| | - Meinolf Suttorp
- Paediatric Haemato-Oncology, Faculty of Medicine Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Susanne Matthes-Leodolter
- Department of Paediatric Haematology and Oncology, St. Anna Children's Hospital, Vienna, Austria
- Department of Paediatrics and Adolescent Medicine, Medical University of Vienna, Vienna, Austria
- Children's Cancer Research Institute, Medical University of Vienna, Vienna, Austria
| | - Adriana Balduzzi
- Pediatric Transplant Unit, Fondazione IRCCS San Gerardo Dei Tintori, Monza, Italy
- School of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
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2
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Prevalence of anemia at diagnosis of pediatric chronic myeloid leukemia and prognostic impact on the disease course. Ann Hematol 2023; 102:563-570. [PMID: 36370190 DOI: 10.1007/s00277-022-05024-1] [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: 10/06/2022] [Accepted: 11/02/2022] [Indexed: 11/13/2022]
Abstract
The clinical presentation of chronic myeloid leukemia (CML) at diagnosis differs in children compared to adults. At younger age, anemia appears to be frequent at diagnosis, but its prevalence and its impact on prognosis are not well known. In the International Registry of Childhood CML, we selected children and adolescents in chronic phase at diagnosis of CML and treated upfront with imatinib. We examined their hemoglobin level at diagnosis according to the WHO grades to assess the prevalence of anemia and its impact on response to tyrosine kinase inhibitors (TKIs). Data on 430 patients were included. Anemia at diagnosis was observed in 350 patients (81%), with a mean hemoglobin level of 96.4 g/l (SD 23.6). Among them, 182 patients (52%) presented with moderate anemia and 110 (31%) with severe anemia while 58 (17%) had mild anemia. Compared with mild and no anemia, moderate and severe forms were significantly associated with younger age at diagnosis, asthenia, splenomegaly, and increased leukocyte and basophil counts. Delays in achieving major and deep molecular responses were significantly increased for patients with moderate and severe anemia, and also failure of imatinib treatment was more frequent in these two sub-cohorts. However, hemoglobin level was not significantly associated with survival. Anemia at diagnosis of pediatric CML was frequent and may be considered as a prognostic factor.
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3
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Shima H, Shimada H. Recent progress in the management of pediatric chronic myeloid leukemia. Int J Hematol 2023; 117:182-187. [PMID: 36574169 DOI: 10.1007/s12185-022-03526-2] [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] [Received: 12/09/2022] [Revised: 12/21/2022] [Accepted: 12/21/2022] [Indexed: 12/28/2022]
Abstract
Chronic myeloid leukemia (CML) is a rare myeloproliferative disease in children. The primary cause of CML is the chimeric BCR::ABL1 gene in hematopoietic stem cells, which leads to leukocytosis, platelet proliferation, and splenomegaly. Lately, tyrosine kinase inhibitors (TKIs) have replaced hematopoietic cell transplantation, which was previously considered the only curative therapy, as the first-line treatment for chronic-phase CML. However, the clinical efficacy of TKIs, including those effective in adult CML, has not been well-investigated in pediatric CML. This review describes the recommended TKI-based management strategies for pediatric CML according to the literature and guidelines. Furthermore, we discuss the prospects for TKI discontinuation to avoid important adverse events, such as growth impairment, in children.
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Affiliation(s)
- Haruko Shima
- Department of Pediatrics, Keio University School of Medicine, 35 Shinanomachi Shinjuku-ku, Tokyo, 1608582, Japan.
| | - Hiroyuki Shimada
- Department of Pediatrics, Keio University School of Medicine, 35 Shinanomachi Shinjuku-ku, Tokyo, 1608582, Japan
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4
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Farshbafnadi M, Razi S, Rezaei N. Transplantation. Clin Immunol 2023. [DOI: 10.1016/b978-0-12-818006-8.00008-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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5
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Indications for haematopoietic cell transplantation for haematological diseases, solid tumours and immune disorders: current practice in Europe, 2022. Bone Marrow Transplant 2022; 57:1217-1239. [PMID: 35589997 PMCID: PMC9119216 DOI: 10.1038/s41409-022-01691-w] [Citation(s) in RCA: 117] [Impact Index Per Article: 58.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 04/15/2022] [Accepted: 04/20/2022] [Indexed: 12/17/2022]
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6
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Brivio E, Cossio A, Borra D, Silvestri D, Prunotto G, Colombini A, Verna M, Rizzari C, Biondi A, Conter V, Valsecchi MG, Balduzzi A. Osteonecrosis in paediatric acute lymphoblastic leukaemia: Incidence, risk factors, radiological patterns and evolution in a single-centre cohort. Br J Haematol 2022; 197:602-608. [PMID: 35362095 PMCID: PMC9323502 DOI: 10.1111/bjh.18147] [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: 12/30/2021] [Revised: 02/25/2022] [Accepted: 03/03/2022] [Indexed: 11/30/2022]
Abstract
Osteonecrosis (ON) is a well‐known sequela of paediatric acute lymphoblastic leukaemia (ALL) treatment. Incidence differs substantially among studies and the clinical significance of radiological findings is not fully established. We analysed 256 consecutive patients with ALL treated in our Institution between October 2010 and December 2016. Within the cohort, 41 developed ON, with a mean 5‐year cumulative incidence of 18.5 (standard error, SE, 5.7)% overall. The mean (SE) 5‐year cumulative incidence of ON was 12.7 (2.1)% after censoring upon stem cell transplantation (SCT) and/or relapse. Patients aged ≥10 years and patients allocated to the high‐risk stratum had a 10‐fold and fivefold higher risk of ON respectively. The risk of ON was more than double in relapsed patients, whereas no significant impact of gender, immunophenotype and SCT was demonstrated. Multiple lesions (median four joints involved per patient) were detected by magnetic resonance imaging in all but one patient, with the knee being the most affected joint. Lesions affecting convex joint surfaces experienced the worst evolution, whereas most lesions on diaphyses and concave surfaces remained radiologically stable or disappeared during follow‐up. ON has a high prevalence in paediatric ALL, presenting with multiple lesions. Lesions involving convex surfaces were at higher risk of radiological deterioration.
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Affiliation(s)
- Erica Brivio
- Clinica Pediatrica Università degli Studi di Milano Bicocca, Fondazione MBBM, Monza, Italy.,Princess Máxima Center for Pediatric Oncology, Utrecht, the Netherlands
| | - Andrea Cossio
- Orthopedic Department, Ospedale S. Gerardo, Monza, Italy
| | - Davide Borra
- Orthopedic Department, Ospedale S. Gerardo, Monza, Italy
| | - Daniela Silvestri
- Dipartimento di Medicina e Chirurgia, Centro di Ricerca in Biostatistica per l'Epidemiologia Clinica, Universita' degli Studi di Milano Bicocca, Monza, Italy
| | - Giulia Prunotto
- Clinica Pediatrica Università degli Studi di Milano Bicocca, Fondazione MBBM, Monza, Italy
| | - Antonella Colombini
- Clinica Pediatrica Università degli Studi di Milano Bicocca, Fondazione MBBM, Monza, Italy
| | - Marta Verna
- Clinica Pediatrica Università degli Studi di Milano Bicocca, Fondazione MBBM, Monza, Italy
| | - Carmelo Rizzari
- Clinica Pediatrica Università degli Studi di Milano Bicocca, Fondazione MBBM, Monza, Italy
| | - Andrea Biondi
- Clinica Pediatrica Università degli Studi di Milano Bicocca, Fondazione MBBM, Monza, Italy
| | - Valentino Conter
- Clinica Pediatrica Università degli Studi di Milano Bicocca, Fondazione MBBM, Monza, Italy
| | - Maria Grazia Valsecchi
- Dipartimento di Medicina e Chirurgia, Centro di Ricerca in Biostatistica per l'Epidemiologia Clinica, Universita' degli Studi di Milano Bicocca, Monza, Italy
| | - Adriana Balduzzi
- Clinica Pediatrica Università degli Studi di Milano Bicocca, Fondazione MBBM, Monza, Italy
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Alzahrani AM, Shait Mohammed MR, Alghamdi RA, Ahmad A, Zamzami MA, Choudhry H, Khan MI. Urolithin A and B Alter Cellular Metabolism and Induce Metabolites Associated with Apoptosis in Leukemic Cells. Int J Mol Sci 2021; 22:ijms22115465. [PMID: 34067305 PMCID: PMC8196872 DOI: 10.3390/ijms22115465] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/22/2021] [Accepted: 05/13/2021] [Indexed: 12/19/2022] Open
Abstract
Leukemia is persistently a significant cause of illness and mortality worldwide. Urolithins, metabolites of ellagic acid and ellagitannins produced by gut microbiota, showed better bioactive compounds liable for the health benefits exerted by ellagic acid and ellagitannins containing pomegranate and walnuts. Here, we assessed the potential antileukemic activities of both urolithin A and urolithin B. Results showed that both urolithin A and B significantly inhibited the proliferation of leukemic cell lines Jurkat and K562, among which urolithin A showed the more prominent antiproliferative capability. Further, urolithin treatment alters leukemic cell metabolism, as evidenced by increased metabolic rate and notable changes in glutamine metabolism, one-carbon metabolism, and lipid metabolism. Next, we evidenced that both urolithins equally promoted apoptosis in leukemic cell lines. Based on these observations, we concluded that both urolithin A and B alter leukemic cell metabolome, resulting in a halt of proliferation, followed by apoptosis. The data can be used for designing new combinational therapies to eradicate leukemic cells.
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Affiliation(s)
- Abdulaziz Musa Alzahrani
- Biochemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (A.M.A.); (M.R.S.M.); (R.A.A.); (A.A.); (M.A.Z.); (H.C.)
| | - Mohammed Razeeth Shait Mohammed
- Biochemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (A.M.A.); (M.R.S.M.); (R.A.A.); (A.A.); (M.A.Z.); (H.C.)
- Centre of Artificial Intelligence in Precision Medicines, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Raed Ahmed Alghamdi
- Biochemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (A.M.A.); (M.R.S.M.); (R.A.A.); (A.A.); (M.A.Z.); (H.C.)
| | - Abrar Ahmad
- Biochemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (A.M.A.); (M.R.S.M.); (R.A.A.); (A.A.); (M.A.Z.); (H.C.)
| | - Mazin A. Zamzami
- Biochemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (A.M.A.); (M.R.S.M.); (R.A.A.); (A.A.); (M.A.Z.); (H.C.)
- Centre of Artificial Intelligence in Precision Medicines, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Hani Choudhry
- Biochemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (A.M.A.); (M.R.S.M.); (R.A.A.); (A.A.); (M.A.Z.); (H.C.)
- Centre of Artificial Intelligence in Precision Medicines, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Mohammad Imran Khan
- Biochemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (A.M.A.); (M.R.S.M.); (R.A.A.); (A.A.); (M.A.Z.); (H.C.)
- Centre of Artificial Intelligence in Precision Medicines, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Correspondence:
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8
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Smith G, Apperley J, Milojkovic D, Cross NCP, Foroni L, Byrne J, Goringe A, Rao A, Khorashad J, de Lavallade H, Mead AJ, Osborne W, Plummer C, Jones G, Copland M. A British Society for Haematology Guideline on the diagnosis and management of chronic myeloid leukaemia. Br J Haematol 2020; 191:171-193. [PMID: 32734668 DOI: 10.1111/bjh.16971] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 06/22/2020] [Indexed: 12/20/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Adam J Mead
- MRC Molecular Haematology Unit, MRC Weatherall Institute of Molecular Medicine, Radcliffe Department of Medicine, University of Oxford, Oxford, UK
| | - Wendy Osborne
- Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK
| | - Chris Plummer
- Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK
| | - Gail Jones
- Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle, UK
- BSH Haemato-Oncology Task Force representative
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9
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Knöfler R, Lange BS, Paul F, Tiebel O, Suttorp M. Bleeding signs due to acquired von Willebrand syndrome at diagnosis of chronic myeloid leukaemia in children. Br J Haematol 2019; 188:701-706. [PMID: 31617211 DOI: 10.1111/bjh.16241] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Accepted: 08/11/2019] [Indexed: 12/16/2022]
Abstract
A considerable proportion of patients with chronic myeloid leukaemia (CML) may present at diagnosis with high platelet counts. This may result in thrombosis or bleeding complications due to binding of von Willebrand factor (VWF) multimers to platelets. Paediatric CML is very rare and no systematic investigation on clinical complications of elevated platelets has been reported. Data on platelet count and associated haemostaseological complications were retrospectively analysed in a cohort of 156 children with CML. Fifty-one percent (81/156) patients presented with thrombocytosis (platelet count> 500 × 109 /l), and were extreme (>1 000 × 109 /l) in 23/156 (16%). There were no cases of thrombosis but mild bleeding signs were present in 12% (n = 9) children with thrombocytosis. Bleeding occurred without correlation to elevated platelet counts and was associated with reduced large VWF multimers, indicating a diagnosis of acquired von Willebrand syndrome (AVWS), which resolved after initiation of CML treatment. Patients with paediatric CML frequently exhibit high platelet counts not resulting in thrombosis. In patients with thrombocytosis mild bleeding signs due to a low percentage of large VWF multimers can be demonstrated. AVWS may be underdiagnosed in paediatric CML (Clinical-Trials.gov NCT00445822, 9 March 2007).
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Affiliation(s)
- Ralf Knöfler
- Division of Paediatric Haemostaseology, Department of Paediatrics, Univ.-Hospital Carl Gustav Carus, Technical University, Dresden, Germany.,Division of Paediatric Haemato-Oncology, Department of Paediatrics, Univ.-Hospital Carl Gustav Carus, Technical University, Dresden, Germany
| | - Björn S Lange
- Division of Paediatric Haemato-Oncology, Department of Paediatrics, Univ.-Hospital Carl Gustav Carus, Technical University, Dresden, Germany
| | - Franziska Paul
- Division of Paediatric Haemato-Oncology, Department of Paediatrics, Univ.-Hospital Carl Gustav Carus, Technical University, Dresden, Germany
| | - Oliver Tiebel
- Institute of Clinical Chemistry, Univ.-Hospital Carl Gustav Carus, Technical University, Dresden, Germany
| | - Meinolf Suttorp
- Division of Paediatric Haemato-Oncology, Department of Paediatrics, Univ.-Hospital Carl Gustav Carus, Technical University, Dresden, Germany.,Medical Faculty, Paediatric Haemato-Oncology, Technical University, Dresden, Germany
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10
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Duarte RF, Labopin M, Bader P, Basak GW, Bonini C, Chabannon C, Corbacioglu S, Dreger P, Dufour C, Gennery AR, Kuball J, Lankester AC, Lanza F, Montoto S, Nagler A, Peffault de Latour R, Snowden JA, Styczynski J, Yakoub-Agha I, Kröger N, Mohty M. Indications for haematopoietic stem cell transplantation for haematological diseases, solid tumours and immune disorders: current practice in Europe, 2019. Bone Marrow Transplant 2019; 54:1525-1552. [PMID: 30953028 DOI: 10.1038/s41409-019-0516-2] [Citation(s) in RCA: 176] [Impact Index Per Article: 35.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Revised: 03/05/2019] [Accepted: 03/07/2019] [Indexed: 12/20/2022]
Abstract
This is the seventh special EBMT report on the indications for haematopoietic stem cell transplantation for haematological diseases, solid tumours and immune disorders. Our aim is to provide general guidance on transplant indications according to prevailing clinical practice in EBMT countries and centres. In order to inform patient decisions, these recommendations must be considered together with the risk of the disease, the risk of the transplant procedure and the results of non-transplant strategies. In over two decades since the first report, the EBMT indications manuscripts have incorporated changes in transplant practice coming from scientific and technical developments in the field. In this same period, the establishment of JACIE accreditation has promoted high quality and led to improved outcomes of patient and donor care and laboratory performance in transplantation and cellular therapy. An updated report with operating definitions, revised indications and an additional set of data with overall survival at 1 year and non-relapse mortality at day 100 after transplant in the commonest standard-of-care indications is presented. Additional efforts are currently underway to enable EBMT member centres to benchmark their risk-adapted outcomes as part of the Registry upgrade Project 2020 against national and/or international outcome data.
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Affiliation(s)
- Rafael F Duarte
- Hospital Universitario Puerta de Hierro Majadahonda - Universidad Autónoma de Madrid, Madrid, Spain.
| | - Myriam Labopin
- EBMT Paris Study Office, Hopital Saint Antoine, Paris, France
| | - Peter Bader
- Goethe University Hospital, Frankfurt/Main, Germany
| | | | - Chiara Bonini
- Vita-Salute San Raffaele University & Ospedale San Raffaele Scientific Institute, Milan, Italy
| | - Christian Chabannon
- Institut Paoli Calmettes & Centre d'Investigations Cliniques en Biothérapies, Marseille, France
| | | | - Peter Dreger
- Medizinische Klinik V, Universität Heidelberg, Heidelberg, Germany
| | - Carlo Dufour
- Giannina Gaslini Children's Hospital, Genoa, Italy
| | | | - Jürgen Kuball
- University Medical Center Utrecht, Utrecht, The Netherlands
| | - Arjan C Lankester
- Willem-Alexander Children's Hospital, Leiden University Medical Center, Leiden, The Netherlands
| | | | | | - Arnon Nagler
- Chaim Sheva Medical Center, Tel-Hashomer, Israel
| | | | - John A Snowden
- Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, United Kingdom
| | - Jan Styczynski
- Collegium Medicum, Nicolaus Copernicus University, Bydgoszcz, Poland
| | | | | | - Mohamad Mohty
- Hopital Saint Antoine, Sorbonne Université, Paris, France
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11
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How I treat chronic myeloid leukemia in children and adolescents. Blood 2019; 133:2374-2384. [PMID: 30917954 DOI: 10.1182/blood.2018882233] [Citation(s) in RCA: 72] [Impact Index Per Article: 14.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Accepted: 03/21/2019] [Indexed: 12/15/2022] Open
Abstract
Evidence-based recommendations have been established for treatment of chronic myeloid leukemia (CML) in adults treated with tyrosine kinase inhibitors (TKIs), but the rarity of this leukemia in children and adolescents makes it challenging to develop similar recommendations in pediatrics. In addition to imatinib, which was approved for pediatric CML in 2003, the second-generation TKIs dasatinib and nilotinib were recently approved for use in children, expanding the therapeutic options and pushing allogeneic stem cell transplantation to a third-line treatment of most pediatric cases. Yet, without sufficient data on efficacy and safety specific to pediatric patients, the selection of a TKI continues to rely on clinical experience in adults. Here, we present 4 case scenarios highlighting common yet challenging issues encountered in the treatment of pediatric CML (suboptimal response, poor treatment adherence, growth retardation, and presentation in advanced phases). Limited experience with very young children, the transition of teenagers to adult medicine, and the goal of achieving treatment-free remission for this rare leukemia are additional significant obstacles that require further clinical investigation through international collaboration.
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12
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Practice Patterns of Physician Treatment for Pediatric Chronic Myelogenous Leukemia. Biol Blood Marrow Transplant 2019; 25:321-327. [DOI: 10.1016/j.bbmt.2018.09.029] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 09/21/2018] [Indexed: 12/20/2022]
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13
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Suttorp M, Bornhäuser M, Metzler M, Millot F, Schleyer E. Pharmacology and pharmacokinetics of imatinib in pediatric patients. Expert Rev Clin Pharmacol 2017; 11:219-231. [PMID: 29076384 DOI: 10.1080/17512433.2018.1398644] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
INTRODUCTION The tyrosine kinase inhibitor (TKI) imatinib was rationally designed to target BCR-ABL1 which is constitutively activated in chronic myeloid leukemia (CML). Following the tremendous success in adults, imatinib also became licensed for treatment of CML in minors. The rarity of pediatric CML hampers the conduction of formal trials. Thus, imatinib is still the single TKI approved for CML treatment in childhood. Areas covered: This review attempts to provide an overview of the literature on pharmacology, pharmacokinetic, and pharmacogenetic of imatinib concerning pediatric CML treatment. Articles were identified through a PubMed search and by reviewing abstracts from relevant hematology congresses. Additional information was provided from the authors' libraries and expertise and from our own measurements of imatinib trough plasma levels in children. Pharmacokinetic variables (e.g. alpha 1-acid glycoprotein binding, drug-drug/food-drug interactions via cytochrome P450 3A4/5, cellular uptake mediated via OCT-1-influx variations and P-glycoprotein-mediated drug efflux) still await to be addressed in pediatric patients systematically. Expert commentary: TKI response rates vary among different individuals and pharmacokinetic variables all can influence CML treatment success. Adherence to imatinib intake may be the most prominent factor influencing treatment outcome in teenagers thus pointing towards the potential benefits of regular drug monitoring.
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Affiliation(s)
- Meinolf Suttorp
- a Pediatric Hematology and Oncology , University Hospital 'Carl Gustav Carus' , Dresden , Germany
| | - Martin Bornhäuser
- b I. Medical Clinic , University Hospital 'Carl Gustav Carus' , Dresden , Germany
| | - Markus Metzler
- c Department of Paediatrics and Adolescent Medicine , University Hospital Erlangen , Erlangen , Germany
| | - Frédéric Millot
- d Pediatric Oncology Unit , CIC 802 INSERM, University Hospital , Poitiers , France
| | - Eberhard Schleyer
- b I. Medical Clinic , University Hospital 'Carl Gustav Carus' , Dresden , Germany
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Monitoring of childhood ALL using BCR-ABL1 genomic breakpoints identifies a subgroup with CML-like biology. Blood 2017; 129:2771-2781. [PMID: 28331056 DOI: 10.1182/blood-2016-11-749978] [Citation(s) in RCA: 68] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 03/17/2017] [Indexed: 12/20/2022] Open
Abstract
We used the genomic breakpoint between BCR and ABL1 genes for the DNA-based monitoring of minimal residual disease (MRD) in 48 patients with childhood acute lymphoblastic leukemia (ALL). Comparing the results with standard MRD monitoring based on immunoglobulin/T-cell receptor (Ig/TCR) gene rearrangements and with quantification of IKZF1 deletion, we observed very good correlation for the methods in a majority of patients; however, >20% of children (25% [8/32] with minor and 12.5% [1/8] with major-BCR-ABL1 variants in the consecutive cohorts) had significantly (>1 log) higher levels of BCR-ABL1 fusion than Ig/TCR rearrangements and/or IKZF1 deletion. We performed cell sorting of the diagnostic material and assessed the frequency of BCR-ABL1-positive cells in various hematopoietic subpopulations; 12% to 83% of non-ALL B lymphocytes, T cells, and/or myeloid cells harbored the BCR-ABL1 fusion in patients with discrepant MRD results. The multilineage involvement of the BCR-ABL1-positive clone demonstrates that in some patients diagnosed with BCR-ABL1-positive ALL, a multipotent hematopoietic progenitor is affected by the BCR-ABL1 fusion. These patients have BCR-ABL1-positive clonal hematopoiesis resembling a chronic myeloid leukemia (CML)-like disease manifesting in "lymphoid blast crisis." The biological heterogeneity of BCR-ABL1-positive ALL may impact the patient outcomes and optimal treatment (early stem cell transplantation vs long-term administration of tyrosine-kinase inhibitors) as well as on MRD testing. Therefore, we recommend further investigations on CML-like BCR-ABL1-positive ALL.
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Weiss AR, Nichols CR, Freyer DR. Enhancing Adolescent and Young Adult Oncology Research Within the National Clinical Trials Network: Rationale, Progress, and Emerging Strategies. Semin Oncol 2015; 42:740-7. [PMID: 26433555 DOI: 10.1053/j.seminoncol.2015.07.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Adolescent and Young Adult Oncology (AYAO, including patients 15-39 years of age) is an emerging discipline in the field of cancer treatment and research. Poorer survival outcomes for this population and characteristic age-related challenges in care have called attention to the need for increased AYAO research. This chapter outlines pressing questions and reviews recent progress in AYAO research within the current organizational structure of the federal clinical trials enterprise, emphasizing how the United States National Cancer Institute's National Clinical Trials Network (NCTN) has created novel opportunities for collaborative AYAO research among the pediatric and adult NCTN groups. Potential strategies for expanding AYAO research, both within the NCTN and with other partners in the federal and advocacy domains are identified.
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Affiliation(s)
- Aaron R Weiss
- Division of Pediatric Hematology-Oncology, Maine Children's Cancer Program, Department of Pediatrics, Maine Medical Center, Portland, ME
| | - Craig R Nichols
- Section of Hematology/Oncology, Virginia Mason Medical Center, Seattle, WA
| | - David R Freyer
- Division of Hematology, Oncology and Blood & Marrow Transplantation, Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, CA.
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16
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Tauer JT, Hofbauer LC, Jung R, Gerdes S, Glauche I, Erben RG, Suttorp M. Impact of long-term exposure to the tyrosine kinase inhibitor imatinib on the skeleton of growing rats. PLoS One 2015; 10:e0131192. [PMID: 26107505 PMCID: PMC4479438 DOI: 10.1371/journal.pone.0131192] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Accepted: 05/30/2015] [Indexed: 11/19/2022] Open
Abstract
The tyrosine kinase (TK) inhibitor imatinib provides a highly effective therapy for chronic myeloid leukemia (CML) via inhibition of the oncogenic TK BCR-ABL1. However, off-target TKs like platelet-derived growth factor receptors (PDGF-R) and colony-stimulating factor-1 receptor (c-fms), involved in bone remodeling, are also inhibited. Thus, pediatric patients with CML on imatinib exhibit altered bone metabolism, leading to linear growth failure. As TKI treatment might be necessary for a lifetime, long-term effects exerted on bone in children are of major concern. Therefore, we studied the skeletal long-term effects of continuous and intermittent imatinib exposure in a juvenile rat model. Four-weeks-old male Wistar rats were chronically exposed to imatinib via drinking water over a period of 10 weeks. Animals were exposed to a standard and high imatinib dosage continuously and to the high imatinib dose intermittently. Bone mass and strength were assessed using pQCT, micro-computed tomography (μCT), and biomechanical testing at the prepubertal, pubertal, and postpubertal age. Bone length and vertebral height as well as biochemical markers of bone turnover were analyzed. Femoral and tibial bone length were dose-dependently reduced by up to 24% (p<0.0001), femoral and tibial trabecular bone mass density (BMD) were reduced by up to 25% (p<0.01), and femoral breaking strength was lowered by up to 20% (p<0.05). Intermittent exposure mitigated these skeletal effects. Long-term exposure resulted in reduced vertebral height by 15% and lower trabecular BMD by 5%. Skeletal changes were associated with suppressed serum osteocalcin (p<0.01) and non-significantly elevated serum CTX-I and PINP levels. In conclusion, imatinib mainly impaired longitudinal growth of long bones rather than the vertebrae of growing rats. Interestingly, intermittent imatinib exposure has less skeletal side effects, which may be beneficial in pediatric patients taking imatinib.
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Affiliation(s)
- Josephine T. Tauer
- Department of Pediatrics, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
- * E-mail:
| | - Lorenz C. Hofbauer
- Department of Internal Medicine III, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Roland Jung
- Experimental Center of the Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Sebastian Gerdes
- Institute for Medical Informatics and Biometry, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Ingmar Glauche
- Institute for Medical Informatics and Biometry, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Reinhold G. Erben
- Department of Biomedical Sciences, University of Veterinary Medicine, Vienna, Austria
| | - Meinolf Suttorp
- Department of Pediatrics, University Hospital Carl Gustav Carus, TU Dresden, Dresden, Germany
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17
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Can prognostic scoring systems for chronic myeloid leukemia as established in adults be applied to pediatric patients? Ann Hematol 2015; 94:1363-71. [DOI: 10.1007/s00277-015-2367-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2014] [Accepted: 03/28/2015] [Indexed: 12/31/2022]
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18
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Sureda A, Bader P, Cesaro S, Dreger P, Duarte RF, Dufour C, Falkenburg JHF, Farge-Bancel D, Gennery A, Kröger N, Lanza F, Marsh JC, Nagler A, Peters C, Velardi A, Mohty M, Madrigal A. Indications for allo- and auto-SCT for haematological diseases, solid tumours and immune disorders: current practice in Europe, 2015. Bone Marrow Transplant 2015; 50:1037-56. [PMID: 25798672 DOI: 10.1038/bmt.2015.6] [Citation(s) in RCA: 216] [Impact Index Per Article: 24.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Accepted: 01/09/2015] [Indexed: 12/17/2022]
Abstract
This is the sixth special report that the European Society for Blood and Marrow Transplantation regularly publishes on the current practice and indications for haematopoietic SCT for haematological diseases, solid tumours and immune disorders in Europe. Major changes have occurred in the field of haematopoietic SCT over the last years. Cord blood units as well as haploidentical donors have been increasingly used as stem cell sources for allo-SCT, thus, augmenting the possibility of finding a suitable donor for a patient. Continuous refinement of conditioning strategies has also expanded not only the number of potential indications but also has permitted consideration of older patients or those with co-morbidity for a transplant. There is accumulating evidence of the role of haematopoietic SCT in non-haematological disorders such as autoimmune diseases. On the other hand, the advent of new drugs and very effective targeted therapy has challenged the role of SCT in some instances or at least, modified its position in the treatment armamentarium of a given patient. An updated report with revised tables and operating definitions is presented.
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Affiliation(s)
- A Sureda
- Department of Haematology, Institut Catala d'Oncologia, Hospital Duran I Reynals, Barcelona, Spain
| | - P Bader
- Universitätsklinikum Frankfurt, Goethe-Universität, Klinik für Kinder- und Jugendmedizin, Frankfurt, Germany
| | - S Cesaro
- Paediatric Haematology Oncology, Policlinico G.B. Rossi, Verona, Italy
| | - P Dreger
- Department of Internal Medicine V, University of Heidelberg, Heidelberg, Germany
| | - R F Duarte
- Department of Haematology, Institut Catala d'Oncologia, Hospital Duran I Reynals, Barcelona, Spain
| | - C Dufour
- Clinical And Experimental Hematology Unit. Institute G. Gaslini, Genoa, Italy
| | - J H F Falkenburg
- Department of Haematology, Leiden University Medical Center, Leiden, The Netherlands
| | - D Farge-Bancel
- Department of Haematology-BMT, Hopital St Louis, Paris, France
| | - A Gennery
- Children's BMT Unit, Great North Children's Hospital, Newcastle-Upon-Tyne, UK
| | - N Kröger
- Department of Stem Cell Transplantation, University hospital Eppendorf, Hamburg, Germany
| | - F Lanza
- Haematology and BMT Unit, Cremona, Italy
| | - J C Marsh
- Department of Haematological Medicine, King's College Hospital/King's College London, London, UK
| | - A Nagler
- Chaim Sheva Medical Center, Tel-Hashomer, Israel
| | - C Peters
- Stem Cell Transplantation Unit, St Anna Kinderspital, Vienna, Austria
| | - A Velardi
- Sezione di Ematologia, Dipartimento di Medicina Clinica e Sperimentale, Università di Perugia, Perugia, Italy
| | - M Mohty
- Department of Haematology, H. Saint Antoine, Paris, France
| | - A Madrigal
- Anthony Nolan Research Institute, Royal Free and University College, London, UK
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Adoptive therapy with donor lymphocyte infusion after allogenic hematopoietic SCT in pediatric patients. Bone Marrow Transplant 2014; 50:51-5. [PMID: 25310307 DOI: 10.1038/bmt.2014.200] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Revised: 06/23/2014] [Accepted: 07/23/2014] [Indexed: 01/14/2023]
Abstract
The aim of this study was to analyse the experience of Polish Pediatric Group for Hematopoietic Stem Cell Transplantation in respect to donor lymphocyte infusion procedure. The study included 51 pediatric patients with malignant (45) and non-malignant (6) diseases treated with DLI in the period 1993-2012. The indications for DLI were as follows: (1) increasing recipient chimerism after non-ablative hematopoietic SCT (18 patients); (2) immunomodulation after a reduced intensity conditioning regimen (2 patients); (3) increase in minimal residual disease detection (3 patients); and (4) relapse (28 patients). DLI was carried out at a median of 6 (0.5-79) months after SCT. DLI was administered as either a single-dose (in 19 cases) or in escalating-dose regimens (in 32 cases). The median total dose of CD3-positive T cells was 28.0 (0.1-730.0) × 10(6)/kg body weight. The time for assessment of DLI efficacy ranged from 0 to 70 (median 3) months. At evaluation, 18 patients experienced CR, 3 achieved PR, 19 showed relapse and 11 rejected the graft. DLI was found to be effective in 39% of cases. Complications of the procedure occurred in 18 patients; of these, 2 died. To sum up DLI shows efficacy in a significant percentage of children. Mortality related to the therapy adverse effects is low. However, this method requires standardization.
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Honkaniemi E, Mattsson K, Barbany G, Sander B, Gustafsson B. Elevated p53 protein expression; a predictor of relapse in rare chronic myeloid malignancies in children? Pediatr Hematol Oncol 2014; 31:327-39. [PMID: 24761810 DOI: 10.3109/08880018.2014.898723] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Alterations in the tumor suppressor gene TP53 have been associated with poor outcome in adult hematological malignancies. We have earlier reported an increased expression of the TP53 encoded protein p53, in bone marrow samples from pediatric patients with aggressive leukemia. Our aim was now to evaluate p53 protein expression at different time points before and after hematopoietic stem cell transplantation (HSCT) as a predictor of relapse in a group of children diagnosed with MDS, JMML and CML, and also investigate if potential alterations in expression could be correlated to mutations in TP53. PROCEDURE Paraffin embedded bone marrow samples from 33 pediatric patients diagnosed with MDS, JMML and CML between 1997 and 2010 were collected retrospectively from time of diagnosis and pre and post HSCT. Immunohistochemistry (IHC) was performed on tissue microarrays (TMA) with antibodies to p53 and p21. DNA sequencing of exon 2-11 of TP53 was performed in 7 patients with JMML and 5 patients with MDS. RESULTS Elevated p53 protein expression at diagnosis predicted for relapse, odds ratio (OR) 1.19 (95% CI: 1.02-1.40, p = .028). Sequencing of TP53 did not reveal any mutations in the 12 patients analyzed and p53 expression correlated positively to p21 expression indicating a functional p53/p21 protein pathway. CONCLUSION Elevated p53 protein expression at diagnosis may be an indicator of relapse in children with MDS, JMML and CML.
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Affiliation(s)
- Emma Honkaniemi
- 1Department of Pediatrics, Astrid Lindgren Children`s Hospital, Karolinska University Hospital-Huddinge, Department of Clinical Science Intervention and Technology (CLINTEC), Karolinska Institutet, Stockholm, Sweden
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21
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van der Sligte NE, Krumbholz M, Pastorczak A, Scheijen B, Tauer JT, Nowasz C, Sonneveld E, de Bock GH, Meeuwsen-de Boer TGJ, van Reijmersdal S, Kuiper RP, Bradtke J, Metzler M, Suttorp M, de Bont ESJM, van Leeuwen FN. DNA copy number alterations mark disease progression in paediatric chronic myeloid leukaemia. Br J Haematol 2014; 166:250-3. [PMID: 24673583 DOI: 10.1111/bjh.12850] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2013] [Accepted: 02/17/2014] [Indexed: 12/16/2022]
Abstract
Early recognition of children with chronic phase chronic myeloid leukaemia (CML-CP) at risk for developing a lymphoid blast crisis (LyBC) is desirable, because therapy options in CML-LyBC are limited. We used Multiplex Ligation-dependent Probe Amplification to determine whether B-cell lymphoid leukaemia-specific copy number alterations (CNAs) (e.g. IKZF1, PAX5, CDKN2A deletions) could be detected in CML-CP and may be used to predict disease progression to LyBC. CNAs were detected in all patients with CML-LyBC, but in none of the 77 patients with CML-CP. Based on this study we conclude that CNAs remain a hallmark of disease progression.
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Affiliation(s)
- Naomi E van der Sligte
- Division of Paediatric Oncology/Haematology, Department of Paediatrics, Beatrix Children's Hospital, University Medical Centre Groningen, University of Groningen, Groningen, The Netherlands
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22
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Calafiore L, Amoroso L, Della Casa Alberighi O, Luksch R, Zanazzo G, Castellano A, Podda M, Dominici C, Haupt R, Corrias M, Garaventa A. Two-stage phase II study of imatinib mesylate in subjects with refractory or relapsing neuroblastoma. Ann Oncol 2013; 24:1406-13. [DOI: 10.1093/annonc/mds648] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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23
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Dahlawi H, Jordan-Mahy N, Clench M, McDougall GJ, Maitre CL. Polyphenols are responsible for the proapoptotic properties of pomegranate juice on leukemia cell lines. Food Sci Nutr 2013; 1:196-208. [PMID: 24804028 PMCID: PMC3967757 DOI: 10.1002/fsn3.26] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2012] [Revised: 12/17/2012] [Accepted: 01/06/2013] [Indexed: 11/18/2022] Open
Abstract
Pomegranates have shown great promise as anti-cancer agents in a number of cancers including clinical trials in prostate cancer. We have previously shown pomegranate juice (PGJ) induced apoptosis and preferentially alters the cell cycle in leukemia cell lines compared with nontumor control cells. However, the agents responsible have not yet been fully elucidated. Treatment of four leukemia cell lines with five fractions obtained from PGJ by solid phase extraction demonstrated that only the acetonitrile fractions decreased adenosine triphosphate (ATP) levels in all leukemia cell lines. Acetonitrile fractions also significantly activated caspase-3 and induced nuclear morphology characteristic of apoptosis. S phase arrest was induced by acetonitrile fractions which matched S phase arrest seen previously following whole PGJ treatments. The acetonitrile fractions contained higher phenol content than whole PGJ whereas only low levels of phenols were seen in any other fraction. Liquid chromatography mass spectrometry (LC–MS) analysis demonstrated that acetonitrile fractions were enriched in ellagitannins, ellagic acid, and hydroxycinnamic acid derivatives but depleted in anthocyanins. Individual treatments with identified compounds demonstrated that the ellagitannin: punicalagin was the most active and mimicked the responses seen following acetonitrile fraction treatment. Bioactive components within pomegranate were confined to the acetonitrile fraction of PGJ. The enrichment in ellagitannins and hydroxycinnamic acids suggest these may provide the majority of the bioactivities of PGJ. Individual treatments with compounds identified demonstrated that the ellagitannin: punicalagin was the most active agent, highlighting this compound as a key bioactive agent in PGJ.
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Affiliation(s)
- Haytham Dahlawi
- Biomedical Research Centre, Sheffield Hallam University Sheffield, U.K
| | | | - Malcolm Clench
- Biomedical Research Centre, Sheffield Hallam University Sheffield, U.K
| | - Gordon J McDougall
- Environmental and Biochemical Sciences, The James Hutton Institute Invergowrie, Dundee, U.K
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Outcome of allogeneic SCT in patients with chronic myeloid leukemia in the era of tyrosine kinase inhibitor therapy. Ann Hematol 2012; 92:487-96. [PMID: 23250623 DOI: 10.1007/s00277-012-1650-8] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2012] [Accepted: 12/02/2012] [Indexed: 10/27/2022]
Abstract
The introduction of tyrosine kinase inhibitors (TKIs) for chronic myeloid leukemia (CML) led to a dramatic change in the role of allogeneic stem cell transplantation (SCT) with a rapid decline in the number of patients receiving SCT in first chronic phase (CP1). We evaluated 68 consecutive patients in all phases of CML (male/female = 39:29, 27 in CP1), who received SCT from related/unrelated donors (related/unrelated = 23:45) under myeloablative or reduced intensity conditioning (MAC/RIC = 45:23). Forty-eight patients (71 %) received TKIs pre-SCT, 20 patients post-SCT (29 %). Overall survival (OS) of CP1 patients achieved a plateau of 85 % at 10 months. Relapse-free survival (RFS) of CP1 patients was 85 % at 1 and 2 years, and 81 % at 5 years. Multivariate analysis showed adverse OS and RFS for patients transplanted >CP1 (hazard ratio (HR) = 6.61 and 4.62) and those who had grade III-IV aGvHD (HR = 2.45 and 1.82). Patients with advanced CML had estimated OS of 65 and 47 %; and RFS of 41 and 32 % at 1 and 2 years respectively. Therefore, for patients with advanced CML phases, allogeneic SCT provides an acceptable chance of cure. Transplant research should focus on improving conditioning regimens and post-SCT management for this subgroup of CML patients.
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Investigation of effects and mechanisms of total flavonoids of Astragalus and calycosin on human erythroleukemia cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2012; 2012:209843. [PMID: 22848779 PMCID: PMC3394397 DOI: 10.1155/2012/209843] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/09/2012] [Accepted: 05/10/2012] [Indexed: 12/23/2022]
Abstract
Flavonoids are found in most parts of plants and have been shown to have multiple biological activities such as anticancer, anti-inflammation, antibacteria, antivirus, and immune-stimulation. Existing data showed that the total flavonoids of Astragalus (TFA) can provide biological system with resistance to injury and can possess antimutagenic, atherosclerotic inhibition, and other biological effects. This study investigated the effects of TFA and calycosin (a compound isolated from TFA), on apoptosis induction, and cell cycle of human erythroleukemia cell line K562 by an array of techniques, including proliferation (MTT), PI staining, Annexin V/PI double staining, and RT-PCR. The experimental data showed that TFA and calycosin could inhibit the proliferation of K562 cells. The 50% inhibiting concentrations of TFA and calycosin were 98.63 μg/mL and 130.32 μg/mL, respectively. However, TFA and calycosin could not induce apoptosis in K562 cells, but could increase the number of the cells in the G0/G1 phase. The level of cyclin D1 mRNA in K562 cells decreased after the treatment with TFA and calycosin. This study provides new insights into the functional mechanism of total flavonoids of Astragalus and calycosin on human erythroleukemia cells.
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