title: Antiviral therapy for recurrent liver graft infection with hepatitis C virus.
abstract: BACKGROUND
  Antiviral therapy to treat recurrent hepatitis C infection after liver transplantation is controversial due to unresolved balance between benefits and harms.
  
  
  OBJECTIVE
  To compare the therapeutic benefits and harms of different antiviral regimens in patients with hepatitis C re-infected grafts after liver transplantation.
  
  
  METHODS
  We searched The Cochrane Hepato-Biliary Group Controlled Trials Register, the Cochrane Central Register of Controlled Trials (CENTRAL) in The Cochrane Library, MEDLINE, EMBASE, and Science Citation Index Expanded until March 2009.
  
  
  METHODS
  Only randomised clinical trials (irrespective of language, blinding, or publication status) comparing various antiviral therapies (alone or in combination) in the treatment of hepatitis C virus recurrence in liver transplantation were considered for the review.
  
  
  METHODS
  Two authors collected the data independently. We calculated the risk ratio (RR) or mean difference (MD) with 95% confidence intervals (CI) using the fixed-effect and the random-effects models based on available case-analysis. In the presence of only trial for a dichotomous outcome, we performed the Fisher's exact test.
  
  
  RESULTS
  A total of 425 liver transplant recipients with proven hepatitis C recurrence were randomised in twelve trials to various interventions and controls. The mean proportion of genotype I was 79.9% in the nine trials that reported the genotype. All the trials were of high risk of bias. One to two trials were included under each comparison including single drug or multidrug regimens of interferon, ribavirin, and amantadine. There was no significant difference in the mortality, graft rejection, or in re-transplantation between intervention and control in any of the comparisons that reported these outcomes. None of the trials reported liver decompensation or quality of life. Life-threatening adverse effects were not reported in either group in any of the comparisons. Up to 87.5% of patients required reduction in dose and up to 42.9% of patients required cessation of treatment in the various comparisons because of adverse effects or because of patient's choice to stop treatment.
  
  
  CONCLUSIONS
  Considering the lack of clinical benefit and the frequent adverse effects, there is currently no evidence to recommend antiviral treatment for recurrent liver graft infection with HCV. Further randomised clinical trials with adequate trial methodology and adequate duration of follow-up are necessary.
authors.affiliation: University Department of Surgery, Royal Free Hospital and University College School of Medicine, 9th Floor, Royal Free Hospital, Pond Street, London, UK, NW3 2QG.
authors.forename: Kurinchi Selvan
authors.initials: KS
authors.lastname: Gurusamy
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Tsochatzis
authors.forename: Elias
authors.initials: E
authors.lastname: Xirouchakis
authors.forename: Andrew K
authors.initials: AK
authors.lastname: Burroughs
authors.forename: Brian R
authors.initials: BR
authors.lastname: Davidson
mesh_terms: D000547:Amantadine / Q000627:therapeutic use; D000998:Antiviral Agents / Q000009:adverse effects / Q000627:therapeutic use*; D016174:Hepacivirus / Q000235:genetics; D006526:Hepatitis C / Q000188:drug therapy*; D006801:Humans; D007372:Interferons / Q000627:therapeutic use; D016031:Liver Transplantation / Q000009:adverse effects*; D016032:Randomized Controlled Trials as Topic; D012008:Recurrence; D012254:Ribavirin / Q000627:therapeutic use
chemical_list: D000998:Antiviral Agents; D012254:Ribavirin; D007372:Interferons; D000547:Amantadine