ATG in cord blood transplants does not influence EFS and engraftment but does lead to more aGVHD. Kaplan-Meier survival curve and Cox proportional hazards analysis of the (A) probability of EFS, (B) probability of neutrophil engraftment: neutrophil count of 0.5 × 10⁹/L for at least 3 days in the first 60 days after stem cell transplant (SCT), (C) probability of aGVHD grade II to IV, and (D) probability of cGVHD. P < .05 is considered significant. Patients represented as having received no ATG, received ATG early, or received ATG late. NS, nonsignificant.