HLA-DRB1 and type 1 diabetes mellitus: In addition to DR3 (DRB1*03:01∼DQB1*02:01) and DR4 (DRB1*04∼DQB1*03:02, DRB1*08:01∼DQB1*04:02 is a T1D predisposing haplotype in Europeans (Thomson et al., 2007).