(A) Adjusted probability of relapse in patients with AML receiving grafts from an unrelated donor or an HLA-identical sibling (P = .005). (B) Adjusted probability of relapse in patients with ALL receiving grafts from an unrelated donor or an HLA-identical sibling (P = .23). (C) Adjusted probability of relapse in patients with CML receiving grafts from an unrelated donor or an HLA-identical sibling (P = .25).