HLA-DRB1 and type 1 diabetes mellitus: In particular, the DRB1*03:01∼DQB1*02:01/DRB1*04:02/05∼DQB1*03:02 (heterozygous) diplotype imparted the highest T1D risk, followed by DRB1*03:01∼DQB1*02:01/DRB1*03:01∼DQB1*02:01 (homozygous) diplotype.