PLOD1 and polycystic ovary syndrome: After controlled for confounding factors: Age, Infertility duration, AMH, Basal serum FSH, LH, E2, P, T, AFC, BMI, Gn used dosage, Gn used duration, the results showed that TSH was negatively correlated with oocyte maturation of each PCOS patient [β = -0.124, P = 0.013,95%CI (-0.027 ~ -0.003)].