PPARGC1A and polycystic ovary syndrome: Wang et al. could not find statistically significant differences between PPARγ2 Pro12Ala and PGC-1α Gly482Ser polymorphism distributions between Chinese women with PCOS and controls [79], while Yang et al. also reported no significant difference concerning the PPARγ2 Pro12Ala polymorphism distributions between Chinese women with PCOS and controls [80].