Among those, only DRB4*01:03:01‐DRB1*04:01:01‐DQA1*03:01:01‐DQB1*03:02:01 occurred more frequently in T1D w/CD children compared with controls and found in 42.9% (OR = 12.88; 95% CI (4.35, 38.14), P = 3.75 × 10−9). This evidence concerns the gene HLA-DRB1 and type 1 diabetes mellitus.