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Onida F, Gras L, Ge J, Koster L, Hamladji RM, Byrne J, Avenoso D, Aljurf M, Robin M, Halaburda K, Passweg J, Salmenniemi U, Sengeloev H, Apperley J, Clark A, Reményi P, Morozova E, Kinsella F, Lenhoff S, Ganser A, Wu KL, Perez-Martinez A, Hayden PJ, Raj K, Drozd-Sokolowska J, OrtÍ G, de Lavallade H, Yakoub-Agha I, McLornan DP, Chalandon Y. Mismatched related donor allogeneic haematopoietic cell transplantation compared to other donor types for Ph+ chronic myeloid leukaemia: A retrospective analysis from the Chronic Malignancies Working Party of the EBMT. Br J Haematol 2024. [PMID: 38577874 DOI: 10.1111/bjh.19448] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 03/21/2024] [Accepted: 03/25/2024] [Indexed: 04/06/2024]
Abstract
Allogeneic haematopoietic cell transplantation (allo-HCT) remains an option for tyrosine kinase inhibitor-resistant chronic myeloid leukaemia (CML) in first chronic phase (CP1) and high-risk patients with advanced disease phases. In this European Society for Blood and Marrow Transplantation (EBMT) registry-based study of 1686 CML patients undergoing first allo-HCT between 2012 and 2019, outcomes were evaluated according to donor type, particularly focusing on mismatched related donors (MMRDs). Median age at allo-HCT was 46 years (IQR 36-55). Disease status was CP1 in 43%, second CP (CP2) or later in 27%, accelerated phase in 12% and blast crisis in 18%. Donor type was matched related (MRD) in 39.2%, MMRD in 8.1%, matched unrelated (MUD) in 40.2%, and mismatched unrelated (MMUD) in 12.6%. In 4 years, overall survival (OS) for MRD, MMRD, MUD and MMUD was 61%, 56%, 63% and 59% (p = 0.21); relapse-free survival (RFS) was 48%, 42%, 52% and 46% (p = 0.03); cumulative incidence of relapse (CIR) was 33%, 37%, 27% and 30% (p = 0.07); non-relapse mortality (NRM) was 19%, 21%, 21% and 24% (p = 0.21); and graft-versus-host disease (GvHD)-free/relapse-free survival (GRFS) was 16%, 18%, 22% and 15% (p = 0.05) respectively. On multivariate analysis, MMRD use associated with longer engraftment times and higher risk of graft failure compared to MRD or MUD. There was no statistical evidence that MMRD use associated with different OS, RFS and incidence of GvHD compared to other donor types.
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Affiliation(s)
- Francesco Onida
- Hematology-BMT Centre, ASST Fatebenefratelli-Sacco, University of Milan, Milan, Italy
| | - Luuk Gras
- EBMT Statistical Unit, Leiden, The Netherlands
| | - Junran Ge
- EBMT Statistical Unit, Leiden, The Netherlands
| | | | | | - Jenny Byrne
- Nottingham University Hospital, Nottingham, UK
| | | | - Mahmoud Aljurf
- King Faisal Specialist Hospital & Research Centre, Riyadh, Saudi Arabia
| | | | | | | | | | | | | | - Andrew Clark
- Beatson, West of Scotland Cancer Centre-Gartnaval General Hospital, Glasgow, UK
| | | | - Elena Morozova
- RM Gorbacheva Research Institute, Pavlov University, St. Petersburg, Russia
| | | | | | | | | | | | - Patrick J Hayden
- Department of Haematology, Trinity College Dublin, St. James's Hospital, Dublin, Ireland
| | - Kavita Raj
- Department of Haematology, University College London Hospitals, London, UK
| | | | - Guillermo OrtÍ
- Department of Hematology, Vall d'Hebron Institute of Oncology (VHIO), Vall d'Hebron University Hospital, Barcelona, Spain
| | | | | | - Donal P McLornan
- Department of Haematology, University College London Hospitals, London, UK
| | - Yves Chalandon
- Hematology Division and Faculty of Medicine, Hôpitaux Universitaires de Genève (HUG), University of Geneva, Geneva, Switzerland
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