• Alexander Koch, Henning W Zimmermann, Christer Baeck, Carlo Schneider, Eray Yagmur, Christian Trautwein, and Frank Tacke.
• Department of Medicine III, RWTH-University Hospital Aachen, Pauwelsstrasse 30, 52074 Aachen, Germany.
• Clin. Biochem. 2012 Apr 1;45(6):429-35.

ObjectivesC-type natriuretic peptide (CNP) might be an important regulator of vasodilatation, fluid and sodium balance in liver cirrhosis. We aimed at assessing its regulation and prognostic relevance in liver disease patients.Design And MethodsWe analyzed NT-proCNP serum levels in 193 patients with chronic liver diseases and 43 healthy controls.ResultsSerum NT-proCNP concentrations were significantly elevated in liver disease patients compared to healthy controls, with highest levels in established hepatic cirrhosis, independent of disease etiology. NT-proCNP was associated with complications of liver diseases and portal hypertension, namely ascites, esophageal varices and hepatic encephalopathy. Circulating NT-proCNP correlated inversely with renal function. Importantly, elevated NT-proCNP levels were identified as a predictor of mortality or necessity for transplantation. NT-proCNP levels >2 pmol/L indicated adverse prognosis (sensitivity 66.7%, specificity 72.8%, RR 5.4 [95%-CI 2.6-11.2]).ConclusionsSerum NT-proCNP is elevated in advanced liver diseases and has prognostic value in cirrhotic patients.Copyright © 2012 Elsevier Inc. All rights reserved.

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