The serum levels of insulin-like growth factor-1 (IGF-1) were significantly lower in T1DM individuals compared to HCs (−0.050 ng/mL; p = 0.0015), whereas there was no significant difference in IGF-binding protein-3 (IGFBP-3) levels between T1DM individuals and HCs, as previously shown in [38]. Here, IGFBP3 is linked to type 1 diabetes mellitus.