Cumulative incidence of chronic GVHD and relapse by covariates. (A) Cumulative incidence of chronic GVHD by treatment arm, P = .27. (B) Incidence of chronic GVHD by recipient age, P < .01. (C) Incidence of chronic GVHD by CD34⁺ dose, P < .01. (D) Cumulative incidence of relapse by treatment arm and chronic GVHD status, P = .87.