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Transethnic meta-analysis suggests genetic variation in the HEME pathway influences potassium response in patients treated with hydrochlorothiazide

Pharmacogenomics Journal, ISSN: 1473-1150, Vol: 15, Issue: 2, Page: 153-157
2015
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Article Description

Hypokalemia is a recognized adverse effect of thiazide diuretic treatment. This phenomenon, which may impair insulin secretion, has been suggested to be a reason for the adverse effects on glucose metabolism associated with thiazide diuretic treatment of hypertension. However, the mechanisms underlying thiazide diuretic-induced hypokalemia are not well understood. In an effort to identify genes or genomic regions associated with potassium response to hydrochlorothiazide, without a priori knowledge of biologic effects, we performed a genome-wide association study and a multiethnic meta-analysis in 718 European-and African-American hypertensive participants from two different pharmacogenetic studies. Single-nucleotide polymorphisms rs10845697 (Bayes factor=5.560) on chromosome 12, near to the HEME binding protein 1 gene, and rs11135740 (Bayes factor=5.258) on chromosome 8, near to the Mitoferrin-1 gene, reached genome-wide association study significance (Bayes factor >5). These results, if replicated, suggest a novel mechanism involving effects of genes in the HEME pathway influencing hydrochlorothiazide-induced renal potassium loss.

Bibliographic Details

J. L. Del-Aguila; E. Boerwinkle; R. M. Cooper-Dehoff; J. G. Gums; J. A. Johnson; A. B. Chapman; A. L. Beitelshees; K. Bailey; S. T. Turner

Springer Science and Business Media LLC

Biochemistry, Genetics and Molecular Biology; Pharmacology, Toxicology and Pharmaceutics

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