In Korean population, it was observed thatDRB1*03:01/09:01 was mainly in female T1Dgroup (22), but as DRB1*03:01/09:01 genotypewas rare among Iranian population, wedid not obtain significant any association betweenDRB1*03:02/09:01 genotype and genderin T1D patients. Here, HLA-DRB1 is linked to type 1 diabetes mellitus.