(A) Adjusted probability of leukemia-free survival in patients with AML receiving grafts from HLA-identical siblings or an unrelated donor (P < .001). (B) Adjusted probability of leukemia-free survival in patients with ALL receiving grafts from HLA-identical siblings or an unrelated donor (P = .67). (C) Adjusted probability of leukemia-free survival in patients with CML receiving grafts from HLA-identical siblings or an unrelated donor (P = .17).