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

J Viral Hepat. 2001 May;8(3):206-16. doi: 10.1046/j.1365-2893.2001.00291.x.

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.

Publication types

  • Multicenter Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Age Factors
  • Aged
  • Antibodies, Viral / blood
  • Antiviral Agents / therapeutic use
  • Disease-Free Survival
  • Europe / epidemiology
  • Female
  • Hepacivirus / chemistry
  • Hepacivirus / classification
  • Hepacivirus / genetics*
  • Hepatitis C / drug therapy
  • Hepatitis C / epidemiology*
  • Hepatitis C / virology
  • Humans
  • Interferon-alpha / therapeutic use
  • Liver Cirrhosis / drug therapy
  • Liver Cirrhosis / epidemiology
  • Liver Cirrhosis / virology*
  • Longitudinal Studies
  • Male
  • Middle Aged
  • Proportional Hazards Models
  • RNA, Viral / genetics
  • Sex Factors
  • Statistics, Nonparametric
  • Transfusion Reaction
  • Treatment Outcome

Substances

  • Antibodies, Viral
  • Antiviral Agents
  • Interferon-alpha
  • RNA, Viral