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1 February 1995 | Volume 122 Issue 3 | Pages 161-168
Objective: To analyze the distribution of hepatitis C virus (HCV) genotypes among patients positive for antibody to HCV (anti-HCV) according to age, severity of liver disease, and duration of infection; to investigate the influence of HCV genotypes on response to interferon-
Design: Cross-sectional study.
Setting: 3 university hospitals and 2 research units.
Patients: 3 groups of French and Italian patients with chronic HCV infection and detectable serum HCV RNA: Group 1 included 35 patients with hepatocellular carcinoma; group 2, 71 patients with cirrhosis who did not have hepatocellular carcinoma; and group 3, 114 patients with chronic active hepatitis. 106 of the patients with chronic hepatitis or cirrhosis were treated with interferon-
Measurements: Genotyping by polymerase chain reaction with capsid-specific primers; serum HCV RNA by branched DNA (bDNA) signal amplification.
Results: Hepatitis C virus genotype 1b (II) was the most prevalent genotype (61.8%). In a univariate analysis, it was associated with older age (<40 years, 47.4%;
Conclusions: The prevalence of HCV genotypes in French and Italian patients has been changing; the prevalence of HCV type 1b (II) infection has progressively decreased, although it still accounts for most HCV-related cirrhosis and hepatocellular carcinoma. High HCV viremia levels and HCV genotype type 1b (II) are independent predictors for poor response to interferon-
For affiliations and current author addresses, see end of text.
*For a listing of collaborators, see Appendix 2.
Author and Article Information
From Hopital Necker, Institut Pasteur, and Hopital P. Brousse, Paris, France; Jichi Medical School, Tochigi-Ken, Japan; and University of Milan, Milan, Italy.
ARTICLE
Hepatitis C Virus Type 1b (II) Infection in France and Italy
therapy; and to study HCV viremia levels in relation to genotypes and severity of liver disease.
(3 MU subcutaneously 3 times/wk for
6 months).
60 years, 80.4%; P = 0.001), longer duration of disease (
10 years, 40.4%;
20 years, 86.7%; P = 0.005), and cirrhosis with or without hepatocellular carcinoma (78.4% compared with 53.8% for chronic hepatitis; P < 0.001). Viremia levels did not differ between patients infected with HCV type 1b (II) and those infected with other HCV genotypes. Patients with HCV type 1b (II) responded to interferon-
therapy significantly less than did patients with other HCV genotypes (P = 0.01). In a multivariate analysis, age and cirrhosis were independently associated with HCV genotype 1b (II). Genotype and HCV viremia level were independent predictors of response to interferon-
therapy.
therapy and should be considered in the management of patients with HCV infection.
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Request for Reprints: Christian Brechot, MD, PhD, Inserm U 370, CHU Necker, 156, rue de Vaugirard, 75015 Paris, France.
For a listing of collaborators, see Appendix 2.
Grant Support: In part by Institut National de la Sante et de la Recherche Medicale, Pasteur Institute, Diagnostic Pasteur Sanofi, European Community, Association pour la Recherche contre le Cancer, Caisse Nationale d'Assurance Maladie and Fondation pour la Recherche Medicale (JN).
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