In order to evaluate IL-6 as a potential marker to diagnose SBP, we performed two different survival analyses including all patients with cirrhosis despite their PMN count, divided by serum IL-6 and ascites IL-6 cut-offs as calculated before (serum IL-6: 442.37 pg/mL, ascites IL-6: 2.0 × 105 pg/ml). The gene discussed is IL6; the disease is Cirrhosis.