Serum IL-6 revealed lower concentrations in controls (5.39 ± 1.76 pg/mL) compared to T2DM (8.15 ± 3.5 pg/mL) and T2DM-NP patients (9.60 ± 2.97 pg/mL) (Fig 1a). Here, IL6 is linked to type 2 diabetes mellitus.