Overall survival. (A) The 2-year probability of overall survival after transplantation of grafts from haploidentical sibling (61%; 95% CI, 54-67) and HLA-matched sibling (61%; 95% CI, 59-63); P = .99. (B) The 2-year probability of overall survival after transplantation of grafts from offspring (44%; 95% CI, 37-51) and HLA-matched sibling (51%; 95% CI, 48-53); P = .003.