Copyright © 2002 by the European Society of Cardiology.
Increased prevalence of the G20210A prothrombin gene variant in acute coronary syndromes without metabolic or acquired risk factors or with limited extent of disease
a Department of Cardiology, Catholic University, Rome, Italy
b Department of Haematology, Catholic University, Rome, Italy
revised February 23, 2001; accepted February 28, 2001
Abstract
Aims To investigate the prevalence of the G20210A prothrombin and G1691A factor V gene variants in patients with acute coronary syndrome stratified according to risk factor profile and to extent of coronary disease, in comparison with matched healthy controls.
Methods and Results The 20210 prothrombin and the 1691 factor V loci were genotyped in 247 patients 
65 years of age (190 myocardial infarction and 57 unstable angina as first presentation of disease) and in 247 healthy age- and sex-matched controls. The prevalence of the 1691A factor V allele was similar in cases and controls. The frequency of heterozygotes for the 20210A prothrombin allele was 6·5% among patients and 2·8% among controls (OR 2·4, 95% CI 1·0–5·9), increasing to 8·7% in patients with a family history of myocardial infarction (OR 3·3, 95% CI 1·2–9·1), to 9·9% in patients (n=81) with 1 vessel disease (OR 3·8, 95% CI 1·3–10·8), and to 13·0% in patients who were normocholesterolaemic, non-diabetic, normotensive and non-smokers (OR 5·1, 95% CI 1·2–21·4).
Conclusions These findings suggest that the 20210A prothrombin allele represents an inherited risk factor for acute coronary syndrome among patients who have limited extent of coronary disease at angiography or who lack major metabolic and acquired risk factors.
Key Words: Genetic polymorphism, prothrombin, acute coronary syndrome, risk factors
f1 Correspondence: Francesco Burzotta, MD, Institute of Cardiology, Catholic University, Largo Gemelli 8, 00168 Rome, Italy.
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