FNDC5 and gestational diabetes: By contrast, in the group of mothers with GDM, irisin, adropin and dermcidin (19.87 μg/mL, 0.49 ng/mL, and 136.55 ng/mL, respectively) showed slightly higher, though not significantly, median values in comparison to the normoglycemic cohort (18.53 μg/mL, 0.34 ng/mL, and 124.70 ng/mL, respectively) (Table 2).