Cumulative incidences of acute and chronic GVHD. (A) Cumulative incidence of acute GVHD with death as a competing risk. The cumulative incidence of grade II-IV acute GVHD for the combined group was 20.5%: MRD incidence, 18.9%; URD incidence, 23.3% (P = .78). (B) Cumulative incidence of chronic GVHD with death or relapse as a competing risk. The cumulative incidence of chronic GVHD for the combined group was 59.1%: MRD incidence, 58.3%; URD incidence, 59.3% (P = .52). The median time to develop chronic GVHD was 231 days (range, 102-522 days).