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Improved virologic response in chronic hepatitis C genotype 4 treated with nitazoxanide, peginterferon, and ribavirin.

AbstractBACKGROUND & AIMS: Sustained virologic response (SVR) rates of 50%-60% have been achieved in patients with chronic hepatitis C genotype 4 treated with peginterferon plus ribavirin. The safety and efficacy of nitazoxanide plus peginterferon alfa-2a, with or without ribavirin, were evaluated in a randomized controlled trial at 2 centers in Egypt. METHODS: Previously untreated patients with chronic hepatitis C and genotype 4 infection were assigned randomly to groups that were given standard of care (peginterferon alfa-2a and ribavirin for 48 weeks, n = 40), nitazoxanide monotherapy for 12 weeks followed by nitazoxanide plus peginterferon alfa-2a for 36 weeks (n = 28), or nitazoxanide monotherapy for 12 weeks followed by nitazoxanide plus peginterferon alfa-2a and ribavirin for 36 weeks (n = 28). Therapeutics included nitazoxanide (500 mg) twice daily, peginterferon alfa-2a (180 microg) once weekly, and weight-based ribavirin (1000-1200 mg/day). RESULTS: The percentages of rapid virologic response (RVR), defined as undetectable HCV RNA at week 4 of combination therapy, and SVR were significantly higher in patients given the triple therapy compared with the standard of care (64% vs 38%, P = .048; and 79% vs 50%, P = .023; respectively). Patients given nitazoxanide plus peginterferon alfa-2a had intermediate rates of RVR (54%) and SVR (61%). Adverse events were similar across treatment groups except for higher rates of anemia in the groups receiving ribavirin. CONCLUSIONS: The combination of nitazoxanide, peginterferon alfa-2a, and ribavirin increased the percentages of patients with RVR and SVR, compared with patients given peginterferon plus ribavirin, without an increase in adverse events.
AuthorsJean-François Rossignol, Asem Elfert, Yehia El-Gohary, Emmet B Keeffe (Affiliation: The Romark Institute for Medical Research, Tampa, Florida, USA.)
JournalGastroenterology (Gastroenterology) Vol. 136 Issue 3 Pg. 856-62 (Mar 2009) ISSN: 1528-0012 [Electronic] United States
PMID19135998 (Publication Type: Journal Article, Randomized Controlled Trial)
Chemical References
  • Antiparasitic Agents
  • Antiviral Agents
  • Polyethylene Glycols
  • Thiazoles
  • peginterferon alfa-2a
  • Ribavirin
  • nitazoxanide
  • Interferon Alfa-2a
Topics
  • Adult
  • Antiparasitic Agents (administration & dosage, adverse effects)
  • Antiviral Agents (administration & dosage, adverse effects)
  • Drug Therapy, Combination
  • Female
  • Genotype
  • Hepacivirus (drug effects, genetics)
  • Hepatitis C, Chronic (drug therapy)
  • Humans
  • Interferon Alfa-2a (administration & dosage, adverse effects)
  • Male
  • Middle Aged
  • Polyethylene Glycols (administration & dosage, adverse effects)
  • Ribavirin (administration & dosage, adverse effects)
  • Thiazoles (administration & dosage, adverse effects)
  • Treatment Outcome
  • Young Adult