Genomic association analysis of common variants influencing antihypertensive response to hydrochlorothiazide

Turner, S.T. et al. (2013) Genomic association analysis of common variants influencing antihypertensive response to hydrochlorothiazide. Hypertension, 62, pp. 391-397. (doi: 10.1161/HYPERTENSIONAHA.111.00436)

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To identify novel genes influencing blood pressure response to thiazide diuretic therapy for hypertension, we conducted genome-wide association meta-analyses of ≈1.1 million single-nucleotide polymorphisms in a combined sample of 424 European Americans with primary hypertension treated with hydrochlorothiazide from the Pharmacogenomic Evaluation of Antihypertensive Responses study (n=228) and the Genetic Epidemiology of Responses to Antihypertensive study (n=196). Polymorphisms associated with blood pressure response at P<10–5 were tested for replication of the associations in independent samples of hydrochlorothiazide-treated European hypertensives. The rs16960228 polymorphism in protein kinase C, α replicated for same-direction association with diastolic blood pressure response in the Nordic Diltiazem study (n=420) and the Genetics of Drug Responsiveness in Essential Hypertension study (n=206), and the combined 4-study meta-analysis P value achieved genome-wide significance (P=3.3×10−8). Systolic or diastolic blood pressure responses were consistently greater in carriers of the rs16960228 A allele than in GG homozygotes (>4/4 mm Hg) across study samples. The rs2273359 polymorphism in the GNAS-EDN3 region also replicated for same-direction association with systolic blood pressure response in the Nordic Diltiazem study, and the combined 3-study meta-analysis P value approached genome-wide significance (P=5.5×10−8). The findings document clinically important effects of genetic variation at novel loci on blood pressure response to a thiazide diuretic, which may be a basis for individualization of antihypertensive drug therapy and identification of new drug targets.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Padmanabhan, Professor Sandosh and Dominiczak, Professor Anna
Authors: Turner, S.T., Boerwinkle, E., O'Connell, J.R., Bailey, K.R., Gong, Y., Chapman, A.B., McDonough, C.W., Beitelshees, A.L., Schwartz, G.L., Gums, J.G., Padmanabhan, S., Hiltunen, T. P., Citterio, L., Donner, K.M., Hedner, T., Lanzani, C., Melander, O., Saarela, J., Ripatti, S., Wahlstrand, B., Manunta, P., Kontula, K., Dominiczak, A.F., Cooper-DeHoff, R.M., and Johnson, J.A.
College/School:College of Medical Veterinary and Life Sciences > School of Cardiovascular & Metabolic Health
Journal Name:Hypertension
Publisher:American Heart Association
ISSN (Online):1524-4563

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