In comparison with NBP group, FI was significantly lower in CHT (P = 0.009), CHT+GDM (P = 0.010), GHT (P < 0.001), GHT+GDM (P < 0.001), and PE (P < 0.001) groups; however, there was no statistically significant difference between CHT and CHT+GDM (P = 0.354); GHT and GHT+GDM (P = 0.443); and GHT and PE (P = 0.183) groups. Here, SLC5A7 is linked to gestational diabetes.