title: Long term clinical outcome of chronic hepatitis C patients with sustained virological response to interferon monotherapy.
abstract: BACKGROUND
  The key end point for treatment efficacy in chronic hepatitis C is absence of detectable virus at six months after treatment. However, the incidence of clinical events during long term follow up of patients with sustained virological response is still poorly documented and may differ between the Eastern and Western world.
  
  
  OBJECTIVE
  To assess clinical end points during long term follow up of European patients with a sustained virological response to interferon monotherapy.
  
  
  METHODS
  Meta-analysis of individual patient data from eight European protocolled follow up studies of interferon treatment for chronic hepatitis C.
  
  
  RESULTS
  A total of 286 sustained virological responders and 50 biochemical responders (detectable virus but normal alanine aminotransferase levels) were followed up for 59 months. Fifteen sustained virological responders (5.2%) had cirrhosis before treatment and 112 (39%) had genotype 1. The late virological relapse rate after five years of follow up was 4.7% (95% confidence interval (CI) 2.0-7.4) among sustained virological responders; all late relapses occurred within four years after treatment. Among sustained virological responders, the rate of decompensation after five years of follow up was 1.0% (95% CI 0.0-2.3) and none developed hepatocellular carcinoma (HCC). Survival was comparable with the general population, matched for age and sex, the standard mortality ratio being 1.4 (95% CI 0.3-2.5). Clinical outcome of patients with cirrhosis was similar to other sustained virological responders. For biochemical responders, the rates of development of decompensation and HCC during long term follow up were 9.1% (95% CI 0.5-17.7) and 7.1% (95% CI 0-15.0), respectively.
  
  
  CONCLUSIONS
  Five year survival of European sustained virological responders was similar to the overall population, matched for age and sex. No HCCs were detected during long term follow up.
authors.affiliation: Erasmus MC, Department of Gastroenterology and Hepatology, Room CA 326, PO Box 2040, 3000 CA Rotterdam, The Netherlands.
authors.forename: B J
authors.initials: BJ
authors.lastname: Veldt
authors.forename: G
authors.initials: G
authors.lastname: Saracco
authors.forename: N
authors.initials: N
authors.lastname: Boyer
authors.forename: C
authors.initials: C
authors.lastname: Cammà
authors.forename: A
authors.initials: A
authors.lastname: Bellobuono
authors.forename: U
authors.initials: U
authors.lastname: Hopf
authors.forename: I
authors.initials: I
authors.lastname: Castillo
authors.forename: O
authors.initials: O
authors.lastname: Weiland
authors.forename: F
authors.initials: F
authors.lastname: Nevens
authors.forename: B E
authors.initials: BE
authors.lastname: Hansen
authors.forename: S W
authors.initials: SW
authors.lastname: Schalm
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000998:Antiviral Agents / Q000627:therapeutic use*; D005260:Female; D019698:Hepatitis C, Chronic / Q000188:drug therapy* / Q000473:pathology; D006801:Humans; D007372:Interferons / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D012044:Regression Analysis; D016019:Survival Analysis; D016896:Treatment Outcome
chemical_list: D000998:Antiviral Agents; D007372:Interferons