Genome-Wide Joint Meta-Analysis of SNP and SNP-by-Smoking Interaction Identifies Novel Loci for Pulmonary Function

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Genome-Wide Joint Meta-Analysis of SNP and SNP-by-Smoking Interaction Identifies Novel Loci for Pulmonary Function

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Title: Genome-Wide Joint Meta-Analysis of SNP and SNP-by-Smoking Interaction Identifies Novel Loci for Pulmonary Function
Author: Hancock, Dana B.; Artigas, María Soler; Gharib, Sina A.; Henry, Amanda; Manichaikul, Ani; Ramasamy, Adaikalavan; Loth, Daan W.; Imboden, Medea; Koch, Beate; McArdle, Wendy L.; Smith, Albert V.; Smolonska, Joanna; Sood, Akshay; Tang, Wenbo; Zhai, Guangju; Burkart, Kristin M.; Curjuric, Ivan; Eijgelsheim, Mark; Elliott, Paul; Gu, Xiangjun; Harris, Tamara B.; Janson, Christer; Homuth, Georg; Hysi, Pirro G.; Loehr, Laura R.; Lohman, Kurt; Loos, Ruth J. F.; Marciante, Kristin D.; Obeidat, Ma'en; Postma, Dirkje S.; Aldrich, Melinda C.; Brusselle, Guy G.; Eiriksdottir, Gudny; Franceschini, Nora; Heinrich, Joachim; Rotter, Jerome I.; Wijmenga, Cisca; Bentley, Amy R.; Laurie, Cathy C.; Lumley, Thomas; Morrison, Alanna C.; Joubert, Bonnie R.; Rivadeneira, Fernando; Couper, David J.; Kritchevsky, Stephen B.; Liu, Yongmei; Wjst, Matthias; Wain, Louise V.; Vonk, Judith M.; Uitterlinden, André G.; Rochat, Thierry; Rich, Stephen S.; Psaty, Bruce M.; O'Connor, George T.; North, Kari E.; Mirel, Daniel B.; Meibohm, Bernd; Launer, Lenore J.; Khaw, Kay-Tee; Hartikainen, Anna-Liisa; Hammond, Christopher J.; Gläser, Sven; Marchini, Jonathan; Wareham, Nicholas J.; Völzke, Henry; Stricker, Bruno H. C.; Spector, Timothy D.; Probst-Hensch, Nicole M.; Jarvis, Deborah; Jarvelin, Marjo-Riitta; Heckbert, Susan R.; Gudnason, Vilmundur; Boezen, H. Marike; Barr, R. Graham; Cassano, Patricia A.; Strachan, David P.; Fornage, Myriam; Hall, Ian P.; Dupuis, Josée; Tobin, Martin D.; London, Stephanie J.; Wilk, Jemma B; Zhao, Jing Hua; Aschard, Hugues; Liu, Jason Z.; Manning, Alisa K; Chen, Ting-Hsu; Williams, O. Dale; Kraft, Phillip L.; Hofman, Albert

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Citation: Hancock, Dana B., María Soler Artigas, Sina A. Gharib, Amanda Henry, Ani Manichaikul, Adaikalavan Ramasamy, Daan W. Loth, et al. 2012. Genome-wide joint meta-analysis of SNP and SNP-by-smoking interaction identifies novel loci for pulmonary function. PLoS Genetics 8(12): e1003098.
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Abstract: Genome-wide association studies have identified numerous genetic loci for spirometic measures of pulmonary function, forced expiratory volume in one second \((FEV_1)\), and its ratio to forced vital capacity \((FEV_1/FVC)\). Given that cigarette smoking adversely affects pulmonary function, we conducted genome-wide joint meta-analyses (JMA) of single nucleotide polymorphism (SNP) and SNP-by-smoking (ever-smoking or pack-years) associations on \(FEV_1\) and \(FEV_1/FVC\) across 19 studies (total N = 50,047). We identified three novel loci not previously associated with pulmonary function. SNPs in or near DNER (smallest \(P_{JMA} = 5.00×10^{−11})\), HLA-DQB1 and HLA-DQA2 (smallest \(P_{JMA} = 4.35×10^{−9})\), and KCNJ2 and SOX9 (smallest \(P_{JMA} = 1.28×10^{−8})\) were associated with \(FEV_1/FVC\) or \(FEV_1\) in meta-analysis models including SNP main effects, smoking main effects, and SNP-by-smoking (ever-smoking or pack-years) interaction. The HLA region has been widely implicated for autoimmune and lung phenotypes, unlike the other novel loci, which have not been widely implicated. We evaluated DNER, KCNJ2, and SOX9 and found them to be expressed in human lung tissue. DNER and SOX9 further showed evidence of differential expression in human airway epithelium in smokers compared to non-smokers. Our findings demonstrated that joint testing of SNP and SNP-by-environment interaction identified novel loci associated with complex traits that are missed when considering only the genetic main effects.
Published Version: doi:10.1371/journal.pgen.1003098
Other Sources: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3527213/pdf/
Terms of Use: This article is made available under the terms and conditions applicable to Other Posted Material, as set forth at http://nrs.harvard.edu/urn-3:HUL.InstRepos:dash.current.terms-of-use#LAA
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:10612881
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