HLA-A and type 2 diabetes mellitus: In accordance with previous findings, in a Mexican American study, some HLA-A and -B alleles were associated with T2D protectively; among these were the alleles HLA-A2 (A*02:01:01:01), A25 (A*25:01:01:01), and A3 (A*03:01:01:01), along with some B alleles like HLA-B35 [50].