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A genome-wide association study identifies new psoriasis susceptibility loci and an interaction between HLA-C and ERAP1

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Genetic Analysis of Psoriasis Consortium & the Wellcome Trust Case Control Consortium 2·2010·Nature Genetics

Abstract

To identify new susceptibility loci for psoriasis, we undertook a genome-wide association study of 594,224 SNPs in 2,622 individuals with psoriasis and 5,667 controls. We identified associations at eight previously unreported genomic loci. Seven loci harbored genes with recognized immune functions (IL28RA, REL, IFIH1, ERAP1, TRAF3IP2, NFKBIA and TYK2). These associations were replicated in 9,079 European samples (six loci with a combined P < 5 × 10−8 and two loci with a combined P < 5 × 10−7). We also report compelling evidence for an interaction between the HLA-C and ERAP1 loci (combined P = 6.95 × 10−6). ERAP1 plays an important role in MHC class I peptide processing. ERAP1 variants only influenced psoriasis susceptibility in individuals carrying the HLA-C risk allele. Our findings implicate pathways that integrate epidermal barrier dysfunction with innate and adaptive immune dysregulation in psoriasis pathogenesis.

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Metadata

Authors
Genetic Analysis of Psoriasis Consortium & the Wellcome Trust Case Control Consortium 2
Venue
Nature Genetics
Published
2010-10-17
Volume
42
Issue
11
Pages
985-990
ISSN
  • 1061-4036 (ISSN-L)
  • 1546-1718
OpenAlex
W2105842551
Cited by
1,047
References
7
FWCI
33.49
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: A genome-wide association study identifies new psoriasis susceptibility loci and an interaction between HLA-C and ERAP1. https://app.cochat.ai/papers/10.1038/ng.694
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Genetic Analysis of Psoriasis Consortium & the Wellcome Trust Case Control Consortium 2. (2010). A genome-wide association study identifies new psoriasis susceptibility loci and an interaction between HLA-C and ERAP1. Nature Genetics. https://doi.org/10.1038/ng.694

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