In T1D, the DRB3*01:01:02‐DRB1*03:01:01‐DQA1*03:01:01‐DQB1*02:01:01/DRB4*01:03:01‐DRB1*04:01:01‐DQA1*05:01:01‐DQB1*03:02:01 (DR3‐DQ2/DR4‐DQ8) genotype was found in 38% of T1D children compared with 17% of CD children (OR = 3.05; 95% CI (1.67, 5.57), P = 0.0002) and 28% of children with T1D w/CD (P = 0.347, Data not shown). This evidence concerns the gene HLA-DRB1 and type 1 diabetes mellitus.