A genetic and epidemiological sample of 20-59-year-old males, Moscow r
esidents (n = 3141), was surveyed. The authors obtained data on the pr
evalance of coronary heart disease from epidemiological criteria and g
enealogical 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 fou
nd that out of the 10 possible variants under study a genetic and envi
ronmental variant with independent penetrance of 3 genotypes adequatel
y describes the prevalence of coronary heart disease in the families a
nd 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.