TNF and type 2 diabetes mellitus: TNF-α levels were significantly higher in patients with MDD and T2DM [1.17 (0.92–1.63) pg/mL] than in those with only MDD [0.95 (0.68–1.16) pg/mL] in univariate (p = 0.044) and multivariate (adjusted p = 0.036) analyses.