CONCLUSIONS The PON2 Ser311Cys polymorphism is associated with CHD risk in Caucasians, but there is no associationbetween this polymorphism and CHD in Asians or Hispanic populations.
The cases (coronary artery disease positive patients) showed significant differences in the distribution of cys 311 ser paraoxonase-2 genotypes as compared with the controls (coronary artery disease negative subjects, P=0.015).
In contrast to previous suggestions, this meta-analysis shows no significant association of CHD with the L55M or T(-107)C polymorphism in PON1 or with the S311C polymorphism in PON2.
Two cSNPs in PON1 (L55M and Q192R) and one in PON2 (S311C) have been implicated as independent risk factors for coronary heart disease (CHD) in some, but not all, studies.
In this report, we describe the existence of a common polymorphism at codon 311 (Cys-->Ser; PON2*S) in the PON2 gene, as well as its association with CHD alone and in combination with the PON1 codon 192 polymorphism in Asian Indians.