TNF-α concentration (↑69.77%, p ≤ 0.0001; ↑103.32%, p ≤ 0.0001, respectively) and IL-2 (↑45.10%, p ≤ 0.0001; ↑67.65%, p ≤ 0.0001, respectively) in SWS of patients with psoriasis with normal and decreased saliva secretion was significantly higher than in the control group. The gene discussed is TNF; the disease is psoriasis.