Surprisingly, MFSD2a was also found in maternal serum of the three groups, but in this case no significant differences among groups were found (Control 1.07 ± 0.12, GDM-diet 1.73 ± 0.37, GDM-insulin 1.05 ± 0.17, p = 0.071; Figure 1B and Supplementary Material). This evidence concerns the gene INS and gestational diabetes.