As expected, our results showed that when comparing our T1D group, the CRsr and regional REDOME controls, the DRB1*03 and DRB1*04 alleles showed an odds ratio of risk for association with T1D, with DRB1*04 (30.26%), DRB1*03 (29.93%) and the DR3/DR4 heterozygous genotype (26.32%) as the most frequents. Here, HLA-DRB1 is linked to type 1 diabetes mellitus.