GVHD. Cumulative incidence of acute GVHD with 95% CIs, among patients who received matched-related donor (A) and matched-unrelated donor (B) grafts. Cumulative incidence of chronic GVHD with 95% CIs, among patients who received matched-related donor (C) and matched-unrelated donor (D) grafts. Cumulative incidence of acute and chronic GVHD were calculated with competing risks including relapse, death, and primary graft failure.