HLA-DQA1 and narcolepsy: Whether the DQB1 locus alone could explain most of the risk in our cohort of HS patients, as has been suggested in other pathologies such as narcolepsy [36,37,38] or DQ heterodimerization of DQα03/DQβ03:01 and DQα05/DQβ03:01, and therefore, the risk of the HLA-DQB1*03:01 gene, has to be considered alongside its polymorphic partners HLA-DQA1*03 and *05 and would need additional, larger studies.