Fernando et al. [35] found that lower VDBP concentration in the first trimester increased the GDM risk (OR (95% CI) = 0.98 (0.97, 0.99), N = 304), while Xia et al. [36] discovered that VDBP was not associated with the risk of GDM in either early or mid-pregnancy (all p > 0.05, N = 214). Here, GC is linked to gestational diabetes.