Expression of the Marburg I Single Nucleotide Polymorphism (MI-SNP) and the Marburg II Single Nucleotide Polymorphism (MII-SNP) of the Factor VII-Activating Protease (FSAP) Gene and Risk of Coronary Artery Disease (CAD): A Pilot Study in a Single Population.

BACKGROUND Factor VII-activating protease (FSAP) has a role in vascular inflammation and may have a role coronary artery disease (CAD). The aim of this study was to investigate the association between two naturally occurring single nucleotide polymorphisms (SNPs) in the FSAP gene and the risk of coronary artery disease (CAD). MATERIAL AND METHODS Of 733 patients, 173 patients had symptoms of angina, and 560 patients had CAD confirmed by coronary angiography. All patients were genotyped for SNPs of the FSAP gene, Marburg I (MI-SNP) and Marburg II (MII-SNP), using 5' exonuclease TaqMan assays. Logistic regression analysis was used to evaluate the association between two gene polymorphisms, metabolic and other cardiovascular risk factors in patients with CAD. RESULTS The presence of MI-SNP and MII-SNP FSAP gene polymorphisms were not associated with the presence of CAD. However, the MII-SNP polymorphism was significantly associated with a reduced risk of developing CAD (OR=0.422; 95% CI, 0.194-0.920; P=0.035); the MI-SNP polymorphism was associated with absence of hyperlipoproteinemia (OR=0.601; 95% CI, 0.344-1.051; P=0.074). There was no significant association between expression of the MI-SNP and MII-SNP FSAP gene polymorphisms and the incidence of myocardial infarction, or of a history of diabetes mellitus, arterial hypertension, obesity, or smoking. CONCLUSIONS The MI-SNP and MII-SNP FSAP gene polymorphisms were not predictive or prognostic biomarkers for CAD or its main risk factors. However, the presence of the MII-SNP polymorphism was associated with a reduced risk of developing CAD.

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