Nicolaus Kröger, MD, University Medical Center Hamburg-Eppendorf, Hamburg, Germany, compares outcomes for patients with myelofibrosis, acute myeloid leukemia (AML) and myelodysplastic syndromes (MDS), who receive transplantation with an alternative donor. Prof. Kröger reports that an HLA-identical sibling is still the preferred donor for patients with myelofibrosis. This interview took place during the 47th Annual Meeting of the European Group for Blood and Marrow Transplantation (EBMT) 2021.