Evidence for large-scale gene-by-smoking interaction effects on pulmonary function

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Aschard , H , Tobin , M D , Hancock , D B , Skurnik , D , Sood , A , James , A , Smith , A V , Manichaikul , A , Campbell , A , Prins , B P , Hayward , C , Loth , D , Porteous , D J , Strachan , D P , Zeggini , E , O'Connor , G T , Brusselle , G G , Boezen , H M , Schulz , H , Deary , I J , Hall , I P , Rudan , I , Kaprio , J , Wilson , J F , Wilk , J B , Huffman , J E , Zhao , J H , de Jong , K , Lyytikainen , L-P , Wain , L V , Jarvelin , M-R , Kahonen , M , Fornage , M , Polasek , O , Cassano , P A , Barr , R G , Rawal , R , Harris , S E , Gharib , S A , Enroth , S , Heckbert , S R , Lehtimaki , T , Gyllensten , U , Jackson , V E , Gudnason , V , Tang , W , Dupuis , J , Artigas , M S , Joshi , A D , London , S J & Understanding Soc Sci Grp 2017 , ' Evidence for large-scale gene-by-smoking interaction effects on pulmonary function ' , International Journal of Epidemiology , vol. 46 , no. 3 , pp. 894-904 . https://doi.org/10.1093/ije/dyw318

Title: Evidence for large-scale gene-by-smoking interaction effects on pulmonary function
Author: Aschard, Hugues; Tobin, Martin D.; Hancock, Dana B.; Skurnik, David; Sood, Akshay; James, Alan; Smith, Albert Vernon; Manichaikul, Aniw; Campbell, Archie; Prins, Bram P.; Hayward, Caroline; Loth, Daanw; Porteous, David J.; Strachan, David P.; Zeggini, Eleftheria; O'Connor, George T.; Brusselle, Guy G.; Boezen, H. Marike; Schulz, Holger; Deary, Ian J.; Hall, Ian P.; Rudan, Igor; Kaprio, Jaakko; Wilson, James F.; Wilk, Jemma B.; Huffman, Jennifer E.; Zhao, Jing Hua; de Jong, Kim; Lyytikainen, Leo-Pekka; Wain, Louise V.; Jarvelin, Marjo-Riitta; Kahonen, Mika; Fornage, Myriam; Polasek, Ozren; Cassano, Patricia A.; Barr, R. Graham; Rawal, Rajesh; Harris, Sarah E.; Gharib, Sina A.; Enroth, Stefan; Heckbert, Susan R.; Lehtimaki, Terho; Gyllensten, Ulf; Jackson, Victoria E.; Gudnason, Vilmundur; Tang, Wenbo; Dupuis, Josee; Artigas, Maria Soler; Joshi, Amit D.; London, Stephanie J.; Understanding Soc Sci Grp
Contributor: University of Helsinki, Clinicum
Date: 2017-06
Language: eng
Number of pages: 11
Belongs to series: International Journal of Epidemiology
ISSN: 0300-5771
URI: http://hdl.handle.net/10138/211830
Abstract: Background: Smoking is the strongest environmental risk factor for reduced pulmonary function. The genetic component of various pulmonary traits has also been demonstrated, and at least 26 loci have been reproducibly associated with either FEV1 (forced expiratory volume in 1 second) or FEV1/FVC (FEV1/forced vital capacity). Although the main effects of smoking and genetic loci are well established, the question of potential gene-by-smoking interaction effect remains unanswered. The aim of the present study was to assess, using a genetic risk score approach, whether the effect of these 26 loci on pulmonary function is influenced by smoking. Methods: We evaluated the interaction between smoking exposure, considered as either ever vs never or pack-years, and a 26-single nucleotide polymorphisms (SNPs) genetic risk score in relation to FEV1 or FEV1/FVC in 50 047 participants of European ancestry from the Cohorts for Heart and Aging Research in Genomic Epidemiology (CHARGE) and SpiroMeta consortia. Results: We identified an interaction (beta(int) = -0.036, 95% confidence interval, -0.040 to -0.032, P = 0.00057) between an unweighted 26 SNP genetic risk score and smoking status (ever/never) on the FEV1/FVC ratio. In interpreting this interaction, we showed that the genetic risk of falling below the FEV1/FVC threshold used to diagnose chronic obstructive pulmonary disease is higher among ever smokers than among never smokers. A replication analysis in two independent datasets, although not statistically significant, showed a similar trend in the interaction effect. Conclusions: This study highlights the benefit of using genetic risk scores for identifying interactions missed when studying individual SNPs and shows, for the first time, that persons with the highest genetic risk for low FEV1/FVC may be more susceptible to the deleterious effects of smoking.
Subject: FEV1/FVC
gene-environment interaction
genetic risk score
3142 Public health care science, environmental and occupational health

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