title: Study of host- and virus-related factors associated with spontaneous hepatitis C virus clearance.
abstract: Epidemiologic parameters, virologic characteristics and frequency of HLA class II DR and DQ antigens were compared between 63 subjects with spontaneous hepatitis C virus clearance (group 1) and 282 patients with chronic active hepatitis C virus infection (group 2). DRB1*1101 and moreover DQB1*0301 alleles were more frequent in group 1 than in group 2 (33.8% vs. 14.7% and 64.4% vs. 28.6%; P=0.012 and P=0.003, respectively). The frequency of DQB1*02 was lower in group 1 than in group 2 (25.4% vs. 49%; P=0.04). No difference was observed in viral genotype distribution between group 1 and group 2. Univariate analysis showed that female sex and contamination by intravenous drug use were associated with self limited infection. However, by multivariate analysis, the only independent factor associated with hepatitis C virus RNA clearance was female sex (P=0.004). In conclusion, spontaneous hepatitis C virus RNA clearance is determined by class II antigens (mainly DQB1*0301) and female sex, while viral genotype plays no role.
authors.affiliation: Service de Médecine Interne, Hopital Purpan, Toulouse, France. alric.l@chu-toulouse.fr
authors.forename: L
authors.initials: L
authors.lastname: Alric
authors.forename: M
authors.initials: M
authors.lastname: Fort
authors.forename: J
authors.initials: J
authors.lastname: Izopet
authors.forename: J P
authors.initials: JP
authors.lastname: Vinel
authors.forename: C
authors.initials: C
authors.lastname: Bureau
authors.forename: K
authors.initials: K
authors.lastname: Sandre
authors.forename: J P
authors.initials: JP
authors.lastname: Charlet
authors.forename: M
authors.initials: M
authors.lastname: Beraud
authors.forename: M
authors.initials: M
authors.lastname: Abbal
authors.forename: M
authors.initials: M
authors.lastname: Duffaut
mesh_terms: D000328:Adult; D015331:Cohort Studies; D005260:Female; D005838:Genotype; D006683:HLA-DQ Antigens / Q000235:genetics / Q000276:immunology; D059866:HLA-DQ beta-Chains; D006684:HLA-DR Antigens / Q000235:genetics / Q000276:immunology; D059811:HLA-DRB1 Chains; D016174:Hepacivirus / Q000235:genetics / Q000276:immunology*; D006526:Hepatitis C / Q000235:genetics* / Q000276:immunology*; D000949:Histocompatibility Antigens Class II / Q000235:genetics* / Q000276:immunology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012367:RNA, Viral / Q000276:immunology; D012737:Sex Factors
chemical_list: D006683:HLA-DQ Antigens; D059866:HLA-DQ beta-Chains; C069051:HLA-DQB1 antigen; D006684:HLA-DR Antigens; D059811:HLA-DRB1 Chains; D000949:Histocompatibility Antigens Class II; D012367:RNA, Viral