| Literature DB >> 26343388 |
Loukas Moutsianas1, Luke Jostins1, Ashley H Beecham2, Alexander T Dilthey1, Dionysia K Xifara1, Maria Ban3, Tejas S Shah4, Nikolaos A Patsopoulos5,6,7,8, Lars Alfredsson9, Carl A Anderson4, Katherine E Attfield10, Sergio E Baranzini11, Jeffrey Barrett4, Thomas M C Binder12, David Booth13, Dorothea Buck14, Elisabeth G Celius15, Chris Cotsapas8,16,17, Sandra D'Alfonso18, Calliope A Dendrou19, Peter Donnelly1, Bénédicte Dubois20, Bertrand Fontaine21, Lars Fugger10,19, An Goris20, Pierre-Antoine Gourraud11, Christiane Graetz22, Bernhard Hemmer14,23,24, Jan Hillert25, Ingrid Kockum25, Stephen Leslie26,27, Christina M Lill22,28, Filippo Martinelli-Boneschi29,30, Jorge R Oksenberg11, Tomas Olsson25, Annette Oturai31, Janna Saarela32, Helle Bach Søndergaard31, Anne Spurkland33, Bruce Taylor34, Juliane Winkelmann14,23,35,36,37, Frauke Zipp22, Jonathan L Haines38, Margaret A Pericak-Vance2, Chris C A Spencer1, Graeme Stewart13, David A Hafler8,16,39, Adrian J Ivinson40, Hanne F Harbo15,41, Stephen L Hauser11, Philip L De Jager5,6,7,8, Alastair Compston3, Jacob L McCauley2, Stephen Sawcer3, Gil McVean1.
Abstract
Association studies have greatly refined the understanding of how variation within the human leukocyte antigen (HLA) genes influences risk of multiple sclerosis. However, the extent to which major effects are modulated by interactions is poorly characterized. We analyzed high-density SNP data on 17,465 cases and 30,385 controls from 11 cohorts of European ancestry, in combination with imputation of classical HLA alleles, to build a high-resolution map of HLA genetic risk and assess the evidence for interactions involving classical HLA alleles. Among new and previously identified class II risk alleles (HLA-DRB1*15:01, HLA-DRB1*13:03, HLA-DRB1*03:01, HLA-DRB1*08:01 and HLA-DQB1*03:02) and class I protective alleles (HLA-A*02:01, HLA-B*44:02, HLA-B*38:01 and HLA-B*55:01), we find evidence for two interactions involving pairs of class II alleles: HLA-DQA1*01:01-HLA-DRB1*15:01 and HLA-DQB1*03:01-HLA-DQB1*03:02. We find no evidence for interactions between classical HLA alleles and non-HLA risk-associated variants and estimate a minimal effect of polygenic epistasis in modulating major risk alleles.Entities:
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Year: 2015 PMID: 26343388 PMCID: PMC4874245 DOI: 10.1038/ng.3395
Source DB: PubMed Journal: Nat Genet ISSN: 1061-4036 Impact factor: 38.330