RT Journal Article T1 Role of Age and Hematopoietic Cell Transplantation-Specific Comorbidity Index in Myelodysplastic Patients Undergoing an Allotransplant: A Retrospective Study from the Chronic Malignancies Working Party of the European Group for Blood and Marrow Transplantation. A1 Carré, Martin A1 Porcher, Raphaël A1 Finke, Jürgen A1 Ehninger, Gerhard A1 Koster, Linda A1 Beelen, Dietrich A1 Ganser, Arnold A1 Volin, Liisa A1 Lozano, Sara A1 Friis, Lone A1 Michallet, Mauricette A1 Tischer, Johanna A1 Olavarria, Eduardo A1 Cascon, Maria Jesús Pascual A1 Iacobelli, Simona A1 Koc, Yener A1 Jindra, Pavel A1 Arat, Mutlu A1 de Witte, Theo A1 Yakoub Agha, Ibrahim A1 Kröger, Nicolaus A1 Robin, Marie K1 Age K1 Comorbidities K1 Myelodysplastic syndromes K1 Nonrelapse mortality K1 Transplantation AB Allogeneic hematopoietic stem cell transplantation (HSCT) remains the only potentially curative option for myelodysplastic syndromes (MDSs) but is severely limited by nonrelapse mortality (NRM), especially in this mostly older population. Comorbidity assessment is crucial to predict NRM and often assessed with the Hematopoietic Cell Transplantation-Specific Comorbidity Index (HCT-CI). Moreover, the impact of age on NRM still remains a matter of debate. In recent years, the age at which transplants are made has been progressively increasing, and patients with comorbidities have become more common. Extricating the respective roles of age and comorbidities in toxic mortality is all the more important. This study by the European Group for Blood and Marrow Transplantation registry included 1245 adult patients who underwent a first allogeneic stem cell transplantation for MDSs between 2003 and 2014. Overall, 4-year NRM and overall survival were 32% and 47%, respectively. When considered as continuous predictors, HCT-CI score and age were associated with an increased hazard ratio (HR) for NRM. In multivariate analysis, age band (HR, 1.13; 95% CI, 1.02 to 1.25; P= .016), HCT-CI ≥3 (HR, 1.34; 95% CI, 1.04 to 1.73; P = .022), and Karnofsky Performance Status ≤80 (HR, 2.03; 95% CI, 1.52 to 2.73; P YR 2019 FD 2019-10-21 LK http://hdl.handle.net/10668/15278 UL http://hdl.handle.net/10668/15278 LA en DS RISalud RD Apr 12, 2025