Coronary artery disease (CAD) is the commonest cause of death. Here, we report an association analysis in 63,746 CAD cases and 130,681 controls identifying 15 loci reaching genome-wide significance, taking the number of susceptibility loci for CAD to 46, and a further 104 independent variants (r 2 < 0.2) strongly associated with CAD at a 5% false discovery rate (FDR). Together, these variants explain approximately 10.6% of CAD heritability. Of the 46 genome-wide significant lead SNPs, 12 show a significant association with a lipid trait, and 5 show a significant association with blood pressure, but none is significantly associated with diabetes. Network analysis with 233 candidate genes (loci at 10% FDR) generated 5 interaction networks comprising 85% of these putative genes involved in CAD. The four most significant pathways mapping to these networks are linked to lipid metabolism and inflammation, underscoring the causal role of these activities in the genetic etiology of CAD. Our study provides insights into the genetic basis of CAD and identifies key biological pathways.
Bibliographical noteFunding Information:
The study was designed and conducted by the Clinical Trial Service Unit & Epidemiological Studies Unit (CTSU) at the University of Oxford. Genotyping was supported by a grant to Oxford University and Centre National de Genotypage (CNG) from Merck. The funders had no role in the design of the study or in the data collection or analysis. We especially acknowledge the participants in the study,
the Steering Committee and our collaborators. J.C.H. acknowledges support from the British Heart Foundation (BHF) Centre of Research Excellence.
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