Kaplan-Meier estimates of survival among CML patients according to disease phase and presence or absence of a single HLA mismatch. Groups shown are early CP matches (n = 161; yellow), late CP matches (n = 40; blue), late CP mismatches (n = 23; pink), early CP mismatches (n = 81; red), late matches beyond CP (n = 13; green), and late mismatches beyond CP (n = 33; black).