title: Hepatitis G virus infection in patients with hepatitis C virus infection undergoing liver transplantation.
abstract: OBJECTIVE
  Hepatitis G virus (HGV) is transmissible by blood transfusion, but its role in chronic liver disease is unknown. The aim of this study was to determine the prevalence of HGV infection in patients infected with hepatitis C virus (HCV) undergoing transplantation and evaluate the effects of HGV coinfection on the course of posttransplantation HCV infection.
  
  
  METHODS
  One hundred twenty-four patients infected with HCV undergoing liver transplantation were studied. Serum samples were tested for HCV and HGV RNA; HCV RNA was quantitated by branched DNA assay, and HCV genotype was determined.
  
  
  RESULTS
  The prevalence of pretransplantation and posttransplantation HGV infection was 24% and 28%, respectively. Pre-transplantation HGV infection was positively correlated with posttransplantation HGV infection (P < 0.001). Pretransplantation clinical features were not different in patients infected with HCV with and without HGV infection. Posttransplantation HCV RNA levels were not significantly different in patients with and without HGV coinfection, but HCV genotype 1b was more frequent in patients with HGV coinfection. There were no differences in the histological severity of posttransplantation liver disease, graft, and patient survival between patients with and without HGV infection.
  
  
  CONCLUSIONS
  Although HGV coinfection is frequent in patients with end-stage HCV disease undergoing liver transplantation, there is no association between the presence of HGV coinfection and the severity of liver disease post-transplantation, graft, or patient survival.
authors.affiliation: Department of Medicine, Department of Veterans Affairs Medical Center, San Francisco, California, USA.
authors.forename: M
authors.initials: M
authors.lastname: Berenguer
authors.forename: N A
authors.initials: NA
authors.lastname: Terrault
authors.forename: M
authors.initials: M
authors.lastname: Piatak
authors.forename: A
authors.initials: A
authors.lastname: Yun
authors.forename: J P
authors.initials: JP
authors.lastname: Kim
authors.forename: J Y
authors.initials: JY
authors.lastname: Lau
authors.forename: J R
authors.initials: JR
authors.lastname: Lake
authors.forename: J R
authors.initials: JR
authors.lastname: Roberts
authors.forename: N L
authors.initials: NL
authors.lastname: Ascher
authors.forename: L
authors.initials: L
authors.lastname: Ferrell
authors.forename: T L
authors.initials: TL
authors.lastname: Wright
mesh_terms: D000328:Adult; D005260:Female; D018067:Flaviviridae / Q000302:isolation & purification*; D016174:Hepacivirus / Q000302:isolation & purification*; D006526:Hepatitis C / Q000209:etiology / Q000635:transmission; D006801:Humans; D016031:Liver Transplantation / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D015995:Prevalence; D012367:RNA, Viral / Q000032:analysis; D012307:Risk Factors
chemical_list: D012367:RNA, Viral