HLA-B27 and not variation in MICA is responsible for genotype by sex interaction in risk of Ankylosing Spondylitis
HLA-B27 and not variation in MICA is responsible for genotype by sex interaction in risk of Ankylosing Spondylitis
Ankylosing Spondylitis (AS) is a highly heritable inflammatory arthritis which occurs more frequently in men than women. In their recent publication examining sex differences in the genetic aetiology of common complex traits and diseases, Bernabeu et al. (2021) observe differences in heritability of AS between sexes, and a genome-wide significant genotype by sex interaction in risk of AS at the major histocompatability (MHC) locus1. The authors then present evidence suggesting that this genotype by sex interaction arises primarily as a result of differential expression of the gene MICA across the sexes in skeletal muscle tissue. Through a series of conditional association analyses in the UK Biobank, reanalysis of the GTEx gene expression resource and RNASeq experiments on peripheral blood cells from AS cases and controls, we show that the genotype by sex interaction the authors’ report is unlikely to be a result of variation in MICA, but probably reflects a known interaction between the HLA-B gene, sex and risk of AS. We demonstrate that the diagnostic accuracy of AS in the UK Biobank is low, particularly amongst women, likely explaining some of the observed differences in heritability across the sexes and the difficulty in precisely locating association signals in the cohort.
Brown Matthew A.、McRae Allan F.、Kenna Tony J.、Li Zhixiu、Ellis Jonathan J.、Evans David M.、Wang Geng、Whyte Jessica
Department of Medical and Molecular Genetics, Faculty of Life Sciences and Medicine, King?ˉs College London||Genomics EnglandInstitute for Molecular Bioscience, University of QueenslandQueensland University of Technology (QUT), Faculty of Health, School of Biomedical Sciences||Centre for Immunology and Infection Control, Queensland University of TechnologyCentre for Genomics and Personalised Health, Queensland University of Technology||Queensland University of Technology (QUT), Faculty of Health, School of Biomedical SciencesCentre for Genomics and Personalised Health, Queensland University of Technology||Queensland University of Technology (QUT), Faculty of Health, School of Biomedical SciencesInstitute for Molecular Bioscience, University of Queensland||University of Queensland Diamantina Institute, University of Queensland||Medical Research Council Integrative Epidemiology Unit, University of BristolInstitute for Molecular Bioscience, University of Queensland||University of Queensland Diamantina Institute, University of QueenslandCentre for Genomics and Personalised Health, Queensland University of Technology||Queensland University of Technology (QUT), Faculty of Health, School of Biomedical Sciences
基础医学遗传学内科学
Brown Matthew A.,McRae Allan F.,Kenna Tony J.,Li Zhixiu,Ellis Jonathan J.,Evans David M.,Wang Geng,Whyte Jessica.HLA-B27 and not variation in MICA is responsible for genotype by sex interaction in risk of Ankylosing Spondylitis[EB/OL].(2025-03-28)[2025-08-02].https://www.medrxiv.org/content/10.1101/2021.12.16.21267808.点此复制
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