VDR and polycystic ovary syndrome: These SNP mutations can be used as risk factors to evaluate PCOS.The results of this meta-analysis were different from those of Han et al. ‘s previous meta-analysis [27], which showed that VDR gene polymorphism in TaqI (rs731236) for T allele was significant association with PCOS and didn’t find any association between VDR ApaI (rs7975232), VDR BsmI (rs1544410), VDR FokI (rs2228570), VDR Tru9I (rs757343) and PCOS susceptibility in the all included studies.