Outcomes of allogeneic haematopoietic stem cell transplantation from HLA-matched and alternative donors: a European Society for Blood and Marrow Transplantation registry retrospective analysis

Background The introduction of donors other than HLA-matched siblings has been a pivotal change in stem cell transplantation. We aimed to assess the evolution of outcomes within donor groups over time and explore whether donor–recipient HLA disparity might be advantageous in patients with aggressive disease. Methods In this retrospective, multicentre study, we assessed the outcomes for adult patients (≥18 years) with haematological malignancies...