Donor age and type in allogeneic haematopoietic stem cell transplantation: Strong effect in MDS, limited in AML
Donor age is an important factor influencing outcomes after allogeneic haematopoietic stem cell transplantation (allo-HSCT), but its relevance across donor types and distinct disease biology in acute myeloid leukaemia (AML) and myelodysplastic syndrome (MDS) remains unclear. We analysed 320 patients with AML/MDS who underwent first allo-HSCT between 2016 and 2024. Donors were categorized as matched or mismatched and further stratified as young (<35 years) or old (≥35 years).