The blood levels of DAO were significantly inversely correlated with blood levels of claudin 3 (r = −0.373; p = 0.002), LPS (r = −0.275; p = 0.027), presepsin (r = −0.310; p = 0.012), TNF-α (r = −0.310; p = 0.012), and the severity of cirrhosis according to Child–Pugh scores (r = −0.249; p = 0.045). The gene discussed is TNF; the disease is Cirrhosis.