In the first approach (Fisher’s exact) we compared each HLA allele to the collection of all other HLA alleles, and carriers of HLA-DRB1*01 and *07 were shown to be less prevalent in AAA+ than AAA- subjects (OR = 0.259, P = 0.012, 95% CI: [0.073–0.927] and OR = 0.281, P = 0.018, 95% CI: [0.078, 1.004], respectively). Here, HLA-DRB1 is linked to triple-A syndrome.