Donor-recipient CCR5 genotype analysis. Donor-recipient pairs who both lacked the high-expressing CCR5 H1/H1 genotype were combined into D-R group 1. D-R group 2 was defined as those pairs in which the donor had the CCR5 H1/H1 genotype but the recipient did not; conversely, in D-R group 3 the recipient had the CCR5 H1/H1 genotype but the donor did not. D-R group 4 was not included because of small number of persons (n = 17). (A) Cumulative incidence curves of aGVHD grades III to IV for the first 100 days after transplantation. (B) Cumulative incidence of relapse 10 years after transplantation. (C) Kaplan-Meier curves for DFS. (D) Cumulative incidence of TRM.