Among obese T1D children, fetuin-A levels were significantly positively correlated with BMI, r = 0.572 (p < 0.001), BMI-SDS, r = 0.723 (p < 0.0001), HDL [mg/dl], r = 0.514 (p < 0.01), and daily insulin requirement, r = 0.577 (p < 0.001), and negatively with eGDR2, r = −0.521 (p < 0.01). This evidence concerns the gene AHSG and type 1 diabetes mellitus.