In diabetic patients, the level of serum cTnI in the DCM group is higher than that in the diabetic group, which is consistent with those of the experimental animal model of DCM, where the level of cTnI in the plasma of T2DM mice with heart failure is significantly increased (Korkmaz-Icoz et al., 2016). Here, TNNI3 is linked to type 2 diabetes mellitus.