PON1 and polycystic ovary syndrome: Our previous studies have demonstrated that 3 SNPs of the antioxidant enzymes, the Q192R variant in the paraoxonase 1 (PON1) gene, the G994T polymorphism in the platelet-activating factor acetylhydrolase (PAF-AH) gene, and the A16V variant in the superoxide dismutase 2 (SOD2) gene are associated with the risk of PCOS in Chinese women (23–25).