Cumulative incidence of GVHD. (A) Acute GVHD II-IV. Cumulative incidence of grade II-IV acute GVHD in recipients of haploidentical donor, unrelated donor with ATG, and unrelated donor without ATG allo-HCT (overall, P = .07). (B) Chronic GVHD. Cumulative incidence of chronic GVHD in recipients of haploidentical donor, unrelated donor with ATG, and unrelated donor without ATG allo-HCT (overall, P < .001 at 1 year and 2 years).