A genome-wide analysis of the response to inhaled [β.sub.2]-agonists in chronic obstructive pulmonary disease

Short-acting [β.sub.2]-agonist bronchodilators are the most common medications used in treating chronic obstructive pulmonary disease (COPD). Genetic variants determining bronchodilator responsiveness (BDR) in COPD have not been identified. We performed a genome-wide association study (GWAS) of BDR...

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Published in:The pharmacogenomics journal 2016-08, p.326
Main Authors: Hardin, M, Cho, M.H, McDonald, M.-L, Wan, E, Lomas, D.A, Coxson, H.O, MacNee, W, Vestbo, J, Yates, J.C, Agusti, A, Calverley, P.M.A, Celli, B, Crim, C, Rennard, S, Wouters, E, Bakke, P, Bhatt, S.P, Kim, V, Ramsdell, J, Regan, E.A, Make, B.J, Hokanson, J.E, Crapo, J.D, Beaty, T.H, Hersh, C.P
Format: Article
Language:English
Subjects:
Drug metabolism
Drug therapy
Genetic aspects
Genetic variation
Genome-wide association studies
Identification and classification
Lung diseases, Obstructive
Methods
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Summary:Short-acting [β.sub.2]-agonist bronchodilators are the most common medications used in treating chronic obstructive pulmonary disease (COPD). Genetic variants determining bronchodilator responsiveness (BDR) in COPD have not been identified. We performed a genome-wide association study (GWAS) of BDR in 5789 current or former smokers with COPD in one African-American and four white populations. BDR was defined as the quantitative spirometric response to inhaled [β.sub.2]-agonists. We combined results in a meta-analysis. In the meta-analysis, single-nucleotide polymorphisms (SNPs) in the genes KCNK1 (P = 2.02x[10.sup.-7]) and KCNJ2 (P = 1.79x [10.sup.-7]) were the top associations with BDR. Among African Americans, SNPs in CDH13 were significantly associated with BDR (P =5.1 x [10.sup.-9]). A nominal association with CDH13 was identified in a gene-based analysis in all subjects. We identified suggestive association with BDR among COPD subjects for variants near two potassium channel genes (KCNK7 and KCNJ2). SNPs in CDH13 were significantly associated with BDR in African Americans. The Pharmacogenomics Journal (2016) 16, 326-335; doi: 10.1038/tpj.2015.65; published online 27 October 2015
ISSN:1470-269X
1473-1150
DOI:10.1038/tpj.2015.65