In EUR ancestry (Table 3), the HLA-DRB1*04:01-DQA1*03:01-DQB1*03:02 haplotype (OREUR = 6.66, PEUR = 4.5 × 10−207) was the most significantly associated with T1D. The gene discussed is HLA-DQA1; the disease is type 1 diabetes mellitus.