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  • Title: Angiotensin converting enzyme insertion/deletion polymorphism in French Canadian subjects with premature coronary artery disease.
    Author: Wesolowska E, Marcil M, Lussier-Cacan S, Davignon J, Latour Y, Genest J.
    Journal: Pathol Biol (Paris); 1998 May; 46(5):295-300. PubMed ID: 9769888.
    Abstract:
    The insertion/deletion (I/D) polymorphism of the angiotensin converting enzyme (ACE) gene has been postulated to be associated with CAD in some populations of European descent. As part of a study investigating metabolic and genetic factors in subjects with premature coronary artery disease (CAD), we examined the I/D polymorphism of the ACE gene in 134 subjects with premature CAD (105 men and 29 women, mean age 49 +/- 6 years) and 116 control subjects selected for health (71 men, 45 women; mean age 39 +/- 7 years). Both patients and controls were of French Canadian descent. As expected, significant differences were found between cases and controls with respect to age, plasma lipoprotein cholesterol, presence of smoking, diabetes and high blood pressure after correction for age. Multivariate analysis confirms the importance of age, HDL-C levels, smoking and apo B levels as determinants of CAD. Allele frequencies of the I and D polymorphism were 43.1% and 57.9% in controls, and 48.5% and 51.5% in CAD cases (chi 2 = 0.622, p = 0.430). No significant association between the I/D polymorphism and conventional cardiovascular risk factors, including plasma levels of lipids, lipoprotein cholesterol, diabetes or smoking, was found in cases or controls. Furthermore, the presence of the I/D polymorphism did not correlate with a history of hypertension or a family history of premature CAD in CAD patients. We conclude that, in our selected population, the I/D polymorphism of the ACE gene is not associated with CAD, conventional risk factors, or a family history of CAD. Although our sample size does not allow sufficient power to ascertain that the ACE I/D polymorphism is not associated with CAD, we do not recommend the routine measurement of the ACE polymorphism in our population to determine cardiovascular risk.
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