FGF21 and gestational diabetes: The results of a previously published meta-analysis study by Jue Jia et al. on FGF21 levels in GDM-affected pregnant women pointed out that [33], compared to healthy controls, FGF21 levels were significantly higher in GDM-affected pregnant women (95%CI: 0.07 ~ 0.86, p = 0.02), which yielded similar results with this study.