VDR and preeclampsia: For example, Farajian-Mashhadi et al. (2020) reported that the maternal VDR gene FokI variant was associated with a decreased risk of preeclampsia; in contrast, one study conducted by Zhan et al. (2015) indicated that the G allele of the FokI polymorphism (A>G) increased the risk of preeclampsia among the Chinese population, while another study conducted in China showed that the association of the FokI polymorphism (A>G) with HDP susceptibility was not statistically significant (Si et al., 2022).