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Curr Atheroscler Rep. 2016 Dec;18(12):78. doi: 10.1007/s11883-016-0628-8.

Genetics-Current and Future Role in the Prevention and Management of Coronary Artery Disease.

Current atherosclerosis reports

Robert Roberts

Affiliations

  1. University of Arizona College of Medicine-Phoenix, 550 East Van Buren, Phoenix, AZ, 85004, USA. [email protected].

PMID: 27815829 DOI: 10.1007/s11883-016-0628-8

Abstract

PURPOSE OF REVIEW: The purpose of this study is to review genetic risk variants for coronary artery disease (CAD) and how they will change the management and prevention of CAD currently and in the future.

RECENT FINDINGS: Through the efforts of international consortia, 58 genetic risk variants for CAD of genome-wide significance have been replicated in appropriate independent populations. Only one third of these variants mediate their risk through known conventional risk factors for CAD. Thus, unknown mechanisms contribute to CAD. Secondly, the genetic risk is proportional to the total number of risk variants rather than the intensity of any risk factor. Thirdly, the availability of the genetic risk variants enables one to perform Mendelian randomization (MR) studies since they are randomized at conception, not confounded, fixed for life, and can be used to determine if a risk factor is causative or just a marker. MR can also be used to determine the safety and efficacy of a gene product targeted for drug therapy. Genetic risk variants have been shown to successfully risk stratify for CAD in both primary and secondary preventions. Contrary to dogma, MR documents that plasma HDL-C is not protective of CAD. The use of genetic risk score (GRS) for CAD is shown to be more effective in risk stratifying for CAD than the Framingham risk score and independent of the conventional risk factors including family history. Furthermore, the GRS predicts the response to statin therapy in primary and secondary preventions. The use of GRS could represent a paradigm shift in the prevention of CAD.

Keywords: Coronary artery disease; Genetic risk score for CAD; Genetic risk stratifications for CAD; Genetics; Mendelian randomization

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