A customized genetic approach to the number one killer: coronary artery disease.

Abstract:

PURPOSE OF REVIEW:To review the evidence supporting genetic predisposition to coronary artery disease (CAD). Secondly, to elucidate the barriers precluding the identification of genes responsible for CAD. Thirdly, to indicate the new technology now available to overcome these barriers and summarize current progress. RECENT FINDINGS:Evidence strongly supports that 50% of susceptibility to CAD is genetic. Prevention of CAD requires comprehensive genetic and risk factor modification. Technology to perform genome-wide association studies became available in 2005, namely, the microarrays with 500,000 and 1 million single nucleotide polymorphisms as DNA markers for high-throughput genotyping to determine gene frequencies in large datasets of cases and controls. The first genetic variant, 9p21, for CAD was identified in the Ottawa Heart Genomic study. This is not only a genetic risk factor but also independent of other known risk factors for CAD. 9p21 was subsequently confirmed as a risk variant in several other independent studies involving 64 000 Caucasians. 9p21 increases the risk of CAD by 40% and 20% in heterozygous or homozygous forms respectively. It occurs in 75% of Caucasians, and has recently been confirmed in several other ethnic groups. SUMMARY:Thus, identification of predisposition to CAD is well underway with genome-wide association studies and the first common genetic risk variant, 9p21, has been identified.

journal_name

Curr Opin Cardiol

authors

Roberts R

doi

10.1097/HCO.0b013e32830e6b4e

subject

Has Abstract

pub_date

2008-11-01 00:00:00

pages

629-33

issue

6

eissn

0268-4705

issn

1531-7080

pii

00001573-200811000-00017

journal_volume

23

pub_type

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