title: Long-term follow-up of chronic hepatitis C patients with sustained virological response to various forms of interferon-based anti-viral therapy.
abstract: BACKGROUND
  Combination anti-viral therapy achieves a sustained virological response (defined as HCV-RNA negativity 6 months after the end of therapy) of 56% of patients with chronic hepatitis C. Little is known about long-term durability of HCV-RNA negativity in patient treated with pegylated interferon.
  
  
  OBJECTIVE
  To evaluate the durability of virologic response in patients with sustained virological response to anti-viral therapy treated at our centre.
  
  
  METHODS
  A total of 187 sustained virological responses (50% genotype 1, 42% genotype 2 or 3 and 8% genotype 4; 20% with cirrhosis) with a follow-up of >12 months post-therapy were studied. Twelve patients received monotherapy with interferon-alpha2a or -2b. One hundred and seventy-five received combination therapy with ribavirin and standard interferon-alpha (n = 73) or pegylated interferon-alpha2a or 2b (n = 102). Qualitative serum HCV-RNA was tested by COBAS AMPLICOR HCV test, v2.0.
  
  
  RESULTS
  Median follow-up time was 29 months (range 12-172). Recurrence of HCV infection was not observed in any of the 187 sustained virological responders. Alanine aminotransferase values were normal in 90% and two patients showed minimal elevation of alpha-fetoprotein levels.
  
  
  CONCLUSIONS
  No recurrence of HCV infection was seen in any patient. Thus, long-term prognosis in chronic hepatitis C patients with a sustained virological response to therapy with pegylated interferon +/- ribavirin is promising, but long-term studies need to continue.
authors.affiliation: Department of Internal Medicine IV, Gastroenterology and Hepatology, Medical University of Vienna, Austria.
authors.forename: E
authors.initials: E
authors.lastname: Formann
authors.forename: P
authors.initials: P
authors.lastname: Steindl-Munda
authors.forename: H
authors.initials: H
authors.lastname: Hofer
authors.forename: W
authors.initials: W
authors.lastname: Jessner
authors.forename: U
authors.initials: U
authors.lastname: Bergholz
authors.forename: C
authors.initials: C
authors.lastname: Gurguta
authors.forename: P
authors.initials: P
authors.lastname: Ferenci
mesh_terms: D000328:Adult; D000410:Alanine Transaminase / Q000097:blood; D000998:Antiviral Agents / Q000627:therapeutic use*; D004359:Drug Therapy, Combination; D005260:Female; D005500:Follow-Up Studies; D019698:Hepatitis C, Chronic / Q000188:drug therapy* / Q000821:virology; D006801:Humans; D000077190:Interferon alpha-2; D016898:Interferon-alpha / Q000627:therapeutic use; D007372:Interferons / Q000627:therapeutic use*; D008297:Male; D011092:Polyethylene Glycols / Q000627:therapeutic use; D012367:RNA, Viral / Q000097:blood; D011994:Recombinant Proteins; D012008:Recurrence; D012254:Ribavirin / Q000627:therapeutic use; D016896:Treatment Outcome; D000509:alpha-Fetoproteins / Q000032:analysis
chemical_list: D000998:Antiviral Agents; D000077190:Interferon alpha-2; D016898:Interferon-alpha; D012367:RNA, Viral; D011994:Recombinant Proteins; D000509:alpha-Fetoproteins; D011092:Polyethylene Glycols; D012254:Ribavirin; D007372:Interferons; D000410:Alanine Transaminase; C417083:peginterferon alfa-2b; C100416:peginterferon alfa-2a