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Hepatitis C virus genotypes: distribution and clinical significance in patients with cirrhosis type C seen at tertiary referral centres in Europe

Fattovich, Giovanna and Ribero, Maria Lisa and Pantalena, Maurizio and Diodati, G. and Almasio, Piero Luigi and Nevens, Frederik and Tremolada, Federico and Degos, F. and Rai, J. and Solinas, Antonio and Mura, Domenico and Tocco, Andreina and Zagni, Irene and Fabris, F. and Lomonaco, L. and Noventa, F. and Realdi, Giuseppe and Schalm, Solko W. and Tagger, Alessandro (2001) Hepatitis C virus genotypes: distribution and clinical significance in patients with cirrhosis type C seen at tertiary referral centres in Europe. Journal of Viral Hepatitis, Vol. 8 (3), p. 206-216. eISSN 1365-2893. Article.

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Abstract

The aim of this study was to evaluate the distribution and clinical significance of hepatitis C virus (HCV) genotypes in European patients with compensated cirrhosis due to hepatitis C (Child class A) seen at tertiary referral centres. HCV genotypes were determined by genotype-specific primer PCR in 255 stored serum samples obtained from cirrhotics followed for a median period of 7 years. Inclusion criteria were biopsy-proven cirrhosis, absence of complications of cirrhosis and exclusion of all other potential causes of chronic liver disease. The proportion of patients with types 1b, 2, 3a, 1a, 4 and 5 were 69%, 19%, 6%, 5%, 0.5% and 0.5%, respectively. Kaplan-Meier 5-year risk of hepatocellular carcinoma (HCC) was 6% and 4% for patients infected by type 1b and non-1b, respectively (P=0.8); the corresponding figures for decompensation were 18% and 7% (P=0.0009) and for event-free survival were 79% and 89% (P=0.09), respectively. After adjustment for baseline clinical and serological features, HCV type 1b did not increase the risk for HCC [adjusted relative risk=1.0 (95% confidence interval=0.47-2.34)], whereas it increased the risk for decompensation by a factor of 3 (1.2-7.4) and decreased event-free survival by a factor of 1.7 (0.9-3.10). In conclusion, type 1b and, to a lesser extent, type 2, are the most common HCV genotypes in European patients with cirrhosis. HCV type 1b is not associated with a greater risk for HCC, but increases the risk for decompensation by threefold in patients with cirrhosis.

Item Type:Article
ID Code:6843
Status:Published
Refereed:Yes
Uncontrolled Keywords:Hepatitis C virus (HCV) genotypes, hepatocellular carcinoma (HCC), cirrhosis
Subjects:Area 06 - Scienze mediche > MED/12 Gastroenterologia
Divisions:001 Università di Sassari > 01 Dipartimenti > Scienze biomediche
Publisher:Blackwell / Wiley
eISSN:1365-2893
Deposited On:09 Dec 2011 14:21

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