A study conducted in a group of 125 patients with type 1 diabetes revealed that proinflammatory cytokines IL-6, TNF-α, and IFN-γ as well as anti-inflammatory cytokine IL-10 showed a mutual positive correlation, which may suggest their supplementary activity in the context of the emergence and progression of vascular complications in diabetics [81]. The gene discussed is TNF; the disease is type 1 diabetes mellitus.