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[A genetic-epidemiological model of predisposition to ischemic heart disease (1)].

A genetic and epidemiological sample of 20-59-year-old males, Moscow residents (n = 3141), was surveyed. The authors obtained data on the prevalence of coronary heart disease from epidemiological criteria and genealogical data on cardiovascular diseases by the "Familial History" questionnaire in the first-degree relatives who were interviewed by using a genetic and mathematical monolocus diallelic model. It was found that out of the 10 possible variants under study a genetic and environmental variant with independent penetrance of 3 genotypes adequately describes the prevalence of coronary heart disease in the families and in the population. This suggest that both genetic and environmental factors have an influence on the prevalence of coronary heart disease and that there is a possible genetic polymorphism of the disease.