Risk of relapse (Kaplan-Meier estimates) after allogeneic hematopoietic stem cell transplantation from genotypically HLA-identical siblings (ISDs), alternative (partially) HLA-matched family donors (MFDs), and HLA-matched unrelated volunteers (MUDs). Results are given after stratification for early (ear) and advanced (adv) disease stage. ▴ indicates ISD adv (n = 28); ▿, MUD adv (n = 35); □, ISD ear (n = 110); ⋄, MFD adv (n = 38); ▵, MFD ear (n = 48); and •, MUD ear (n = 66).