Peginterferon Alfa-2a in Patients with Chronic Hepatitis C
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Résumé
BACKGROUND: Covalent attachment of a 40-kd branched-chain polyethylene glycol moiety to interferon alfa-2a results in a compound (peginterferon alfa-2a) that has sustained absorption, a slower rate of clearance, and a longer half-life than unmodified interferon alfa-2a. We compared the clinical effects of a regimen of peginterferon alfa-2a with those of a regimen of interferon alfa-2a in the initial treatment of patients with chronic hepatitis C. METHODS: We randomly assigned 531 patients with chronic hepatitis C to receive either 180 microg of peginterferon alfa-2a subcutaneously once per week for 48 weeks (267 patients) or 6 million units of interferon alfa-2a subcutaneously three times per week for 12 weeks, followed by 3 million units three times per week for 36 weeks (264 patients). All the patients were assessed at week 72 for a sustained virologic response, defined as an undetectable level of hepatitis C virus RNA (<100 copies per milliliter). RESULTS: In the peginterferon group, 223 of the 267 patients completed treatment and 206 completed follow-up. In the interferon group, 161 of the 264 patients completed treatment and 154 completed follow-up. In an intention-to-treat analysis in which patients who missed the examination at the end of treatment or follow-up were considered not to have had a response at that point, peginterferon alfa-2a was associated with a higher rate of virologic response than was interferon alfa-2a at week 48 (69 percent vs. 28 percent, P=0.001) and at week 72 (39 percent vs. 19 percent, P=0.001). Sustained normalization of serum alanine aminotransferase concentrations at week 72 was also more common in the peginterferon group than in the interferon group (45 percent vs. 25 percent, P=0.001). The two groups were similar with respect to the frequency and severity of adverse events, which were typical of those associated with interferon alfa. CONCLUSIONS: In patients with chronic hepatitis C, a regimen of peginterferon alfa-2a given once weekly is more effective than a regimen of interferon alfa-2a given three times weekly.
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La notice
- Revue
- New England Journal of Medicine
- Thématique
- Hepatitis C virus research
- Domaine
- Medicine
- Établissements canadiens
- NutrasourceToronto Western HospitalMount Sinai Hospital
- Organismes subventionnaires
- University of AlbertaKarolinska InstitutetMassachusetts General Hospital
- Mots-clés
- MedicineRegimenChronic hepatitisGastroenterologyInterferon alfaPeginterferon alfa-2aHepatitis CAlpha interferonInternal medicineInterferonPolyethylene glycolImmunologyVirologyRibavirinVirusBiochemistry
- Résumé présent dans OpenAlex
- oui