HLA-DRB1 and triple-A syndrome: Carriers of HLA-DRB1*03 and *11 alleles were shown to be more prevalent in AAA+ than AAA- subjects (OR = 2.519, P = 0.006, 95% CI: [1.37, 4.63] and OR = 2.24, P = 0.019, 95% CI: [1.240, 4.045], respectively) (Fig 1A and Table 2).