The effect of adipokines, which comprise a number of different cytokines including, e.g., leptins, adiponectins, TNF-α, and IL-6, on thyroid tissue has been suggested as a triggering mechanism for autoimmune thyroiditis, which probably precedes or coincides with the diagnosis of another systemic autoimmune disease such as pSS and SLE. This evidence concerns the gene TNF and autoimmune thyroid disease.