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The influence of HLA genetic variation on plasma protein expression
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The influence of HLA genetic variation on plasma protein expression
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Journal Article
The influence of HLA genetic variation on plasma protein expression
2024
Overview
Genetic variation in the human leukocyte antigen (HLA) loci is associated with risk of immune-mediated diseases, but the molecular effects of HLA polymorphism are unclear. Here we examined the effects of HLA genetic variation on the expression of 2940 plasma proteins across 45,330 Europeans in the UK Biobank, with replication analyses across multiple ancestry groups. We detected 504 proteins affected by HLA variants (HLA-pQTL), including widespread
trans
effects by autoimmune disease risk alleles. More than 80% of the HLA-pQTL fine-mapped to amino acid positions in the peptide binding groove. HLA-I and II affected proteins expressed in similar cell types but in different pathways of both adaptive and innate immunity. Finally, we investigated potential HLA-pQTL effects on disease by integrating HLA-pQTL with fine-mapped HLA-disease signals in the UK Biobank. Our data reveal the diverse effects of HLA genetic variation and aid the interpretation of associations between HLA alleles and immune-mediated diseases.
Genetic variation in the HLA locus is associated with many traits, including autoimmune diseases. Here, the authors show that HLA genetic variation exerts widespread trans effects on plasma protein expression, aiding interpretation of associations between HLA alleles and immune mediated diseases.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
