Significantly lower levels (P=0.032) of omentin-1 in not-intervened control subgroup of type 2 diabetics (BMI=35.1 (32.3; 37.1); omentin=2.15 (1.32; 6.02)) in comparison with phase I in diabetes mellitus type 1 were detected (Table 2). This evidence concerns the gene ITLN1 and diabetes mellitus.