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Sharma A, Galimard JE, Pryce A, Bhoopalan SV, Dalissier A, Dalle JH, Locatelli F, Jubert C, Mirci-Danicar O, Kitra-Roussou V, Bertrand Y, Fagioli F, Rialland F, Biffi A, Wynn RF, Michel G, Tambaro FP, Al-Ahmari A, Tbakhi A, Furness CL, Diaz MA, Sedlacek P, Bodova I, Faraci M, Rao K, Kleinschmidt K, Petit A, Gibson B, Bhatt NS, Kalwak K, Corbacioglu S. Cytogenetic abnormalities predict survival after allogeneic hematopoietic stem cell transplantation for pediatric acute myeloid leukemia: a PDWP/EBMT study. Bone Marrow Transplant 2024; 59:451-458. [PMID: 38225386 DOI: 10.1038/s41409-024-02197-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2023] [Revised: 12/14/2023] [Accepted: 01/02/2024] [Indexed: 01/17/2024]
Abstract
Poor-risk (PR) cytogenetic/molecular abnormalities generally direct pediatric patients with acute myeloid leukemia (AML) to allogeneic hematopoietic stem cell transplant (HSCT). We assessed the predictive value of cytogenetic risk classification at diagnosis with respect to post-HSCT outcomes in pediatric patients. Patients younger than 18 years at the time of their first allogeneic HSCT for AML in CR1 between 2005 and 2022 who were reported to the European Society for Blood and Marrow Transplantation registry were subgrouped into four categories. Of the 845 pediatric patients included in this study, 36% had an 11q23 abnormality, 24% had monosomy 7/del7q or monosomy 5/del5q, 24% had a complex or monosomal karyotype, and 16% had other PR cytogenetic abnormalities. In a multivariable model, 11q23 (hazard ratio [HR] = 0.66, P = 0.03) and other PR cytogenetic abnormalities (HR = 0.55, P = 0.02) were associated with significantly better overall survival when compared with monosomy 7/del7q or monosomy 5/del5q. Patients with other PR cytogenetic abnormalities had a lower risk of disease relapse after HSCT (HR = 0.49, P = 0.01) and, hence, better leukemia-free survival (HR = 0.55, P = 0.01). Therefore, we conclude that PR cytogenetic abnormalities at diagnosis predict overall survival after HSCT for AML in pediatric patients.
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Affiliation(s)
- Akshay Sharma
- Department of Bone Marrow Transplantation and Cellular Therapy, St. Jude Children's Research Hospital, Memphis, TN, USA.
| | | | - Angharad Pryce
- Anthony Nolan Research Institute, Imperial College Healthcare NHS Trust, London, UK
| | - Senthil Velan Bhoopalan
- Department of Bone Marrow Transplantation and Cellular Therapy, St. Jude Children's Research Hospital, Memphis, TN, USA
| | | | - Jean-Hugues Dalle
- Pediatric Hematology and Immunology Department, Hôpital Robert-Debré, GHU APHP Nord Université Paris Cité, Paris, France
| | - Franco Locatelli
- Department of Pediatric Hematology and Oncology, IRCCS Ospedale Pediatrico Bambino Gesù, Catholic University of the Sacred Heart, Rome, Italy
| | - Charlotte Jubert
- CHU Bordeaux Groupe Hospitalier Pellegrin-Enfants, Bordeaux, France
| | - Oana Mirci-Danicar
- Paediatric Bone Marrow Transplant Service, Bristol Royal Hospital for Children, Bristol, UK
| | | | - Yves Bertrand
- Unité de coordination interne et externe, Institut d'Hématologie et d'Oncologie Pédiatrique, Lyon, France
| | - Franca Fagioli
- Centro Trapianti Cellule Staminali, Onco-Ematologia Pediatrica, Ospedale Infantile Regina Margherita, Turin, Italy
| | - Fanny Rialland
- Oncopediatrics department, Nantes University Hospital, Nantes, France
| | - Alessandra Biffi
- Pediatric Hematology, Oncology and Stem Cell Transplant Division, Padova University and Hospital, Padua, Italy
| | - Robert F Wynn
- Blood and Marrow Transplant Unit, Department of Paediatric Haematology, Royal Manchester Children's Hospital, Manchester, UK
| | - Gérard Michel
- Département Hématologie Oncologie Pédiatrique, Hôpital de la Timone, Marseille, France
| | - Francesco Paolo Tambaro
- Dipartimento di Ematologia Pediatrica, Azienda Ospedaliera di Rilievo Nazionale, Naples, Italy
| | - Ali Al-Ahmari
- Department of Paediatrics, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | | | | | - Miguel Angel Diaz
- Department of Pediatrics, Niño Jesus Children's Hospital, Madrid, Spain
| | - Petr Sedlacek
- Department of Paediatric Haematology and Oncology, University Hospital Motol, Prague, Czech Republic
| | - Ivana Bodova
- Bone Marrow Transplant Unit, II Children's Clinic, University Children's Hospital, Bratislava, Slovakia
| | - Maura Faraci
- HSCT Unit, Department of Hematology and Oncology, IRCCS Institute G. Gaslini, Genoa, Italy
| | - Kanchan Rao
- Department of Bone Marrow Transplantation, Great Ormond Street Hospital NHS Foundation Trust, London, UK
| | - Katharina Kleinschmidt
- Department of Pediatric Hematology, Oncology and Stem Cell Transplantation, University of Regensburg, Regensburg, Germany
| | - Arnaud Petit
- Hôpital Armand Trousseau, APHP, Sorbonne Université, Paris, France
| | | | - Neel S Bhatt
- Clinical Research Division, Fred Hutchinson Cancer Center, Seattle, WA, USA
| | - Krzysztof Kalwak
- Clinical Department of Paediatric Bone Marrow Transplantation, Oncology and Haematology, Wrocław Medical University, Wrocław, Poland
| | - Selim Corbacioglu
- Department of Pediatric Hematology, Oncology and Stem Cell Transplantation, University of Regensburg, Regensburg, Germany
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Zhang F, Hu GH, Zhang LP, Xu LP, Suo P, Wang Y, Bai L, Liu KY, Zhang XH, Huang XJ, Cheng YF. Outcomes of haploidentical hematopoietic stem cell transplantation with 'Beijing protocol' in pediatric myeloid neoplasms post cytotoxic therapy: a case series study. Leuk Lymphoma 2024; 65:383-388. [PMID: 38043064 DOI: 10.1080/10428194.2023.2281276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Accepted: 11/05/2023] [Indexed: 12/05/2023]
Affiliation(s)
- Feng Zhang
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, National Clinical Research Center for Hematologic Disease, Peking University People's Hospital, Peking University Institute of Hematology, Beijing, China
| | - Guan-Hua Hu
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, National Clinical Research Center for Hematologic Disease, Peking University People's Hospital, Peking University Institute of Hematology, Beijing, China
| | - Le-Ping Zhang
- Department of Pediatrics, Peking University People's Hospital, Beijing, China
| | - Lan-Ping Xu
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, National Clinical Research Center for Hematologic Disease, Peking University People's Hospital, Peking University Institute of Hematology, Beijing, China
| | - Pan Suo
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, National Clinical Research Center for Hematologic Disease, Peking University People's Hospital, Peking University Institute of Hematology, Beijing, China
| | - Yu Wang
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, National Clinical Research Center for Hematologic Disease, Peking University People's Hospital, Peking University Institute of Hematology, Beijing, China
| | - Lu Bai
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, National Clinical Research Center for Hematologic Disease, Peking University People's Hospital, Peking University Institute of Hematology, Beijing, China
| | - Kai-Yan Liu
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, National Clinical Research Center for Hematologic Disease, Peking University People's Hospital, Peking University Institute of Hematology, Beijing, China
| | - Xiao-Hui Zhang
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, National Clinical Research Center for Hematologic Disease, Peking University People's Hospital, Peking University Institute of Hematology, Beijing, China
| | - Xiao-Jun Huang
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, National Clinical Research Center for Hematologic Disease, Peking University People's Hospital, Peking University Institute of Hematology, Beijing, China
| | - Yi-Fei Cheng
- Beijing Key Laboratory of Hematopoietic Stem Cell Transplantation, National Clinical Research Center for Hematologic Disease, Peking University People's Hospital, Peking University Institute of Hematology, Beijing, China
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Mehyar LS, Hartog L, Kahwash SB, Abu-Arja R, Ranalli M, Rangarajan HG. Long term survivor of MOZ-p300 therapy-related acute myeloid leukemia after matched unrelated donor bone marrow transplantation. Leuk Lymphoma 2023; 64:1344-1347. [PMID: 37081802 DOI: 10.1080/10428194.2023.2203287] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Revised: 04/06/2023] [Accepted: 04/11/2023] [Indexed: 04/22/2023]
Affiliation(s)
- Lubna S Mehyar
- Division of Pediatric Hematology, Oncology, Blood and Marrow Transplant, Nationwide Children's Hospital, Columbus, OH, USA
| | - Leigh Hartog
- Division of Pediatric Hematology, Oncology, Blood and Marrow Transplant, Nationwide Children's Hospital, Columbus, OH, USA
| | - Samir B Kahwash
- Department of Pathology and Laboratory Medicine, Nationwide Children's Hospital, Columbus, OH, USA
| | - Rolla Abu-Arja
- Division of Pediatric Hematology, Oncology, Blood and Marrow Transplant, Nationwide Children's Hospital, Columbus, OH, USA
- Department of Pathology and Laboratory Medicine, Nationwide Children's Hospital, Columbus, OH, USA
| | - Mark Ranalli
- Division of Pediatric Hematology, Oncology, Blood and Marrow Transplant, Nationwide Children's Hospital, Columbus, OH, USA
- Department of Pediatrics, The Ohio State University, Columbus, OH, USA
| | - Hemalatha G Rangarajan
- Division of Pediatric Hematology, Oncology, Blood and Marrow Transplant, Nationwide Children's Hospital, Columbus, OH, USA
- Department of Pediatrics, The Ohio State University, Columbus, OH, USA
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Bonneville EF, Schetelig J, Putter H, de Wreede LC. Handling missing covariate data in clinical studies in haematology. Best Pract Res Clin Haematol 2023; 36:101477. [PMID: 37353284 DOI: 10.1016/j.beha.2023.101477] [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: 01/05/2023] [Revised: 05/05/2023] [Accepted: 05/09/2023] [Indexed: 06/25/2023]
Abstract
Missing data are frequently encountered across studies in clinical haematology. Failure to handle these missing values in an appropriate manner can complicate the interpretation of a study's findings, as estimates presented may be biased and/or imprecise. In the present work, we first provide an overview of current methods for handling missing covariate data, along with their advantages and disadvantages. Furthermore, a systematic review is presented, exploring both contemporary reporting of missing values in major haematological journals, and the methods used for handling them. A principal finding was that the method of handling missing data was explicitly specified in a minority of articles (in 76 out of 195 articles reporting missing values, 39%). Among these, complete case analysis and the missing indicator method were the most common approaches to dealing with missing values, with more complex methods such as multiple imputation being extremely rare (in 7 out of 195 articles). An example analysis (with associated code) is also provided using hematopoietic stem cell transplantation data, illustrating the different approaches to handling missing values. We conclude with various recommendations regarding the reporting and handling of missing values for future studies in clinical haematology.
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Affiliation(s)
- Edouard F Bonneville
- Department of Biomedical Data Sciences, Leiden University Medical Center, Leiden, the Netherlands.
| | - Johannes Schetelig
- Dresden University Hospital, Dresden, Germany; DKMS Clinical Trials Unit, Dresden, Germany
| | - Hein Putter
- Department of Biomedical Data Sciences, Leiden University Medical Center, Leiden, the Netherlands
| | - Liesbeth C de Wreede
- Department of Biomedical Data Sciences, Leiden University Medical Center, Leiden, the Netherlands; DKMS Clinical Trials Unit, Dresden, Germany
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