Algorithm for permissiveness of HLA-DPB1 mismatches in donor-recipients pairs.2 Permissive and nonpermissive HLA-DPB1 disparity according to the algorithm described by Crocchiolo et al. aNumbers indicate the group of the 2 HLA-DPB1 alleles of the donor or the recipient. Group 1: DPB1*09:01,10:01,17:01; group 2: DPB1*03:01, 14:01, 45:01; group 3: DPB1*02:01, 0202, 0203; group 4: others.3 Immunogenicity decreases from group 1 to group 4.
