The gender-specific apolipoprotein E genotype influence on the distribution of plasma lipids and apolipoproteins in the population of Rochester, MN. III. Correlations and covariances

S L Reilly, R E Ferrell, C F Sing, S L Reilly, R E Ferrell, C F Sing

Abstract

The gender-specific influence that the apolipoprotein E (ApoE) polymorphism has on the correlations and covariances between pairs of nine plasma lipid and apolipoprotein traits (total cholesterol; in triglycerides; high-density-lipoprotein cholesterol; apolipoproteins AI, AII, B, CII, lnCIII, and lnE) was studied in 507 unrelated individuals representative of the adult population of Rochester, MN. Analyses are presented separately for females and males. The Apo E polymorphism had a significant influence on a large number (10 of 36) of correlations and covariances in females and on a small number (3 of 36) in males. The contribution of allelic variation in the Apo E gene to the definition of multivariate measures of the 36-dimensional correlation structure was evaluated. The influence of Apo E genotype on correlation structure was gender dependent. These findings were used to demonstrate how heterogeneity of risk-factor correlations and covariances among genotype-gender subgroups of the population at large may influence the evaluation of risk of coronary artery disease.

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