Hepatitis C virus genotypes in France: relationship with epidemiology, pathogenicity and response to interferon therapy
| Autor: | Philippe Halfon, P Loiseau, Jacques Izopet, Jérôme Lamoril, V. Gerolami, Marc Bogard, I Mendel, Michelle Martinot-Peignoux, Christopher Payan, Jean-Michel Pawlotsky, Jean-Jacques Lefrère, Patrick Marcellin, B. Fouqueray, Christine Defer, Françoise Roudot-Thoraval, Gilles Duverlie, Y Buisson, Joliette Coste |
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| Rok vydání: | 1999 |
| Předmět: |
Adult
Male medicine.medical_specialty Cirrhosis Genotype Hepatitis C virus Hepacivirus Population Alpha interferon medicine.disease_cause Antiviral Agents Severity of Illness Index Virology Epidemiology medicine Humans education Retrospective Studies education.field_of_study Hepatology biology Interferon-alpha Hepatitis C Hepatitis C Chronic Middle Aged medicine.disease biology.organism_classification Treatment Outcome Infectious Diseases Immunology RNA Viral Female France |
| Zdroj: | Journal of Viral Hepatitis. 6:435-443 |
| ISSN: | 1365-2893 1352-0504 |
| DOI: | 10.1046/j.1365-2893.1999.00187.x |
| Popis: | The aim of this study was to investigate the following in a large population of French patients with chronic hepatitis C: the geographical distribution of hepatitis C virus (HCV) genotypes; the relationship between HCV genotypes and epidemiological characteristics; severity of the disease; and response to interferon (IFN) therapy. Data from 14 tertiary referral centres, corresponding to 1872 patients with chronic hepatitis C, were prospectively collected from 1989 to 1997. HCV genotyping was performed using the line probe assay (LiPA). HCV genotypes 1b, 3, 1a, 2, 4 and a mixed infection were found in 41%, 22%, 16%, 11%, 4% and 4% of our population, respectively. HCV genotype distribution was homogeneous, except for genotype 2 that was found more frequently in the southwest than in the other regions (21% vs 9.2%) (P=0.001). HCV distribution was associated with gender, age, and source and duration of infection. In multivariate analysis, these correlations were related to the source of infection, which was the only independent factor significantly associated with genotype (P=0.001). Genotype 1b was significantly more common in patients with cirrhosis, but in multivariate analysis cirrhosis was independently related to older age at exposure and longer duration of infection (P=0.001). A sustained response to IFN therapy was observed in 11% of patients infected with genotypes 1a or 1b vs 32% of those infected with genotypes 2 or 3 (P=0.001). This study shows that HCV genotype is mainly related to the source infection, but not to the intrinsic pathogenicity of HCV, and is a strong predictor of sustained response to therapy. |
| Databáze: | OpenAIRE |
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