A novel genetic marker for coronary spasm in women from a genome-wide single nucleotide polymorphism analysis
- 1 November 2007
- journal article
- research article
- Published by Ovid Technologies (Wolters Kluwer Health) in Pharmacogenetics and Genomics
- Vol. 17 (11), 919-930
- https://doi.org/10.1097/fpc.0b013e328136bd35
Abstract
Coronary spasm plays an important role in the pathogenesis of variant angina and also ischemic heart diseases in general, and it is more likely to occur in angiographically normal coronary arteries than in stenotic coronary arteries. We previously found a −786T/C polymorphism in the 5′-flanking region of the endothelial nitric oxide synthase (eNOS) gene and reported that this polymorphism is associated with coronary spasm. We report on an investigation of the genetic factor(s) associated with coronary spasm utilizing a genome-wide case–control study. We recruited 411 consecutive Japanese women (201 with coronary spasm; 210 controls) who were all underwent an acetylcholine provocation test. For single nucleotide polymorphism analysis (SNP), 116 204 SNPs were genotyped for 100 women (50 with coronary spasm; 50 controls) utilizing the Affymetrix GeneChip 100 K Set. Case–control studies were performed with 311 women (151 with coronary spasm; 160 controls) using the 10 lowest permutation P value SNPs from the initial SNP analysis. Finally, we discovered SNP rs10498345, a genetic marker for coronary spasm in Japanese women (Odds ratio=0.43, P=9.48×10−7). Haplotype analysis showed that haplotype H2, the only haplotype containing the protective A allele at SNP rs10498345, was most strongly associated with coronary spasm (permutation P value <1×10−4). SNP rs10498345 was strongly associated with the vasoconstrictor response to acetylcholine. Northern blot analysis revealed a novel 4.7 kb RNA transcript, which lacked poly (A), nearby SNP rs10498345. SNP rs10498345 was strongly associated with coronary spasm in Japanese women utilizing genome-wide SNP analysis.Keywords
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