HLA-DQA1 and narcolepsy-cataplexy syndrome: The finding that the majority of NT1 patients following Pandemrix-vaccination are heterozygous for DQA1*01:02:01-DQB1*06:02:01 and with DQA1*03:02//*03:03:01-DQB1*03:01:01 as the most common second haplotype suggests that subjects with these HLA combinations have an increased genetic risk for Pandemrix-induced narcolepsy type 1.