VEGFA and polycystic ovary syndrome: Overall, the pooled results based on the whole population revealed significantly negative correlation between VEGF rs2010963 polymorphism and PCOS risk under Homozygote model (OR = 0.56, 95%CI: 0.32–0.99, P = 0.05, I2 = 0%), Based on ethnic stratification, significantly increased risk of PCOS was observed in the Caucasian populations under 2 gene comparison models (Dominant model: OR = 1.35, 95%CI: 1.00–0.95, P = 0.05, I2 = 10%; Heterozygote model: OR = 1.43, 95%CI: 1.04–1.95, P = 0.03, I2 = 33%).