Inflammation biomarkers that have been previously used in psoriasis patients include serum levels of C-reactive protein (CRP), haptoglobin, complement 3 (C3), C4, TNF-α, IL-6, IL-8, IL-12, elafin, neutrophil-lymphocyte ratio (NL), and platelet-lymphocyte ratio (PL) (5-7). The gene discussed is TNF; the disease is psoriasis.