@article{8d4d25cdb04148e480ce80c9f7b88014,
title = "Dense genotyping of immune-related susceptibility loci reveals new insights into the genetics of psoriatic arthritis.",
abstract = "Psoriatic arthritis (PsA) is a chronic inflammatory arthritis associated with psoriasis and, despite the larger estimated heritability for PsA, the majority of genetic susceptibility loci identified to date are shared with psoriasis. Here, we present results from a case-control association study on 1,962 PsA patients and 8,923 controls using the Immunochip genotyping array. We identify eight loci passing genome-wide significance, secondary independent effects at three loci and a distinct PsA-specific variant at the IL23R locus. We report two novel loci and evidence of a novel PsA-specific association at chromosome 5q31. Imputation of classical HLA alleles, amino acids and SNPs across the MHC region highlights three independent associations to class I genes. Finally, we find an enrichment of associated variants to markers of open chromatin in CD8(+) memory primary T cells. This study identifies key insights into the genetics of PsA that could begin to explain fundamental differences between psoriasis and PsA.",
author = "John Bowes and Ashley Budu-Aggrey and Ulrike Huffmeier and Steffen Uebe and Kathryn Steel and Harry Hebert and Chris Wallace and Jonathan Massey and Bruce, {Ian N} and James Bluett and Marie Feletar and Morgan, {Ann W} and Helena Marzo-Ortega and Gary Donohoe and Morris, {Derek W} and Philip Helliwell and Ryan, {Anthony W} and David Kane and Warren, {Richard B} and Eleanor Korendowych and Gerd-Marie Alenius and Emiliano Giardina and Jonathan Packham and Ross McManus and Oliver FitzGerald and Neil McHugh and Brown, {Matthew A} and Pauline Ho and Frank Behrens and Harald Burkhardt and Andre Reis and Anne Barton",
note = "089989, Wellcome Trust, United Kingdom091157, Wellcome Trust, United Kingdom100140, Wellcome Trust, United Kingdom20385, Arthritis Research UK, United Kingdom20385, Arthritis Research UK, United Kingdom",
year = "2015",
month = feb,
day = "5",
doi = "10.1038/ncomms7046",
language = "English",
volume = "6",
journal = "Nature Communications",
issn = "2041-1723",
publisher = "Springer Nature",
}