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Candidate gene genotypes, along with conventional risk factor assessment, improve estimation of coronary heart disease risk in healthy UK men

Humphries, SE; Cooper, JA; Talmud, PJ; Miller, GJ; (2007) Candidate gene genotypes, along with conventional risk factor assessment, improve estimation of coronary heart disease risk in healthy UK men. CLIN CHEM , 53 (1) 8 - 16. 10.1373/clinchem.2006.074591.

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Abstract

Background: One of the aims of cardiovascular genetics is to test the efficacy of the use of genetic information to predict cardiovascular risk. We therefore investigated whether inclusion of a set of common variants in candidate genes along with conventional risk factor (CRF) assessment enhanced coronary heart disease (CHD)-risk algorithms.Methods: We followed middle-aged men in the prospective Northwick Park Heart Study 11 (NPHSII) for 10.8 years and analyzed complete trait and genotype information available on 2057 men (183 CHD events).Results: Of the 12 genes previously associated with CHD risk, in stepwise multivariate risk analysis, uncoupling protein 2 (UCP2; P = 0.0001), apolipoprotein E (APOE; P = 0.0003), lipoprotein lipase (LPL; P = 0.007), and apolipoprotein AIV (APOA4; P = 0.04) remained in the model. Their combined area under the ROC curve (A(ROC)) was 0.62 (0.58-0.66) [12.6% detection rate for a 5% false positive rate (DR5)]. The A(ROC) for the CRFs age, triglyceride, cholesterol, systolic blood pressure, and smoking was 0.66 (0.61-0.70) (DR5 = 14.2%). Combining CRFs and genotypes significantly improved discrimination (P = 0.001). Inclusion of previously demonstrated interactions of smoking with LPL, interleukin-6 (IL6), and platelet/endothelial cell adhesion molecule (PECAM1) genotypes increased the A(ROC) to 0.72 (0.68-0.76) for a DR5 of 19.1% (P = 0.01 vs CRF combined with genotypes).Conclusions: For a modest panel of selected genotypes, CHD-risk estimates incorporating CRFs and genotype-risk factor interactions were more effective than risk estimates that used CRFs alone. (c) 2007 American Association for Clinical Chemistry

Type:Article
Title:Candidate gene genotypes, along with conventional risk factor assessment, improve estimation of coronary heart disease risk in healthy UK men
DOI:10.1373/clinchem.2006.074591
Keywords:APOLIPOPROTEIN-E, CARDIOVASCULAR-DISEASE, MYOCARDIAL-INFARCTION, ARTERY-DISEASE, ALPHA GENE, POLYMORPHISM, METAANALYSIS, PREDICTION, POPULATION, VARIANT
UCL classification:UCL > School of Life and Medical Sciences > Faculty of Population Health Sciences > Institute of Cardiovascular Science

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