A phase 2 study of filibuvir in combination with pegylated IFN alfa and ribavirin for chronic HCV



Título del documento: A phase 2 study of filibuvir in combination with pegylated IFN alfa and ribavirin for chronic HCV
Revista: Annals of hepatology
Base de datos: PERIÓDICA
Número de sistema: 000412940
ISSN: 1665-2681
Autores: 1
2
3
4
4
4
4
Instituciones: 1Escuela de Medicina San Juan Bautista, San Juan. Puerto Rico
2University of British Columbia, Vancouver, Columbia Británica. Canadá
3Universite Paris Diderot, Clichy, París. Francia
4Pfizer Laboratories, Global Innovative Pharma Business Unit, Groton, Connecticut. Estados Unidos de América
Año:
Periodo: Jul-Ago
Volumen: 13
Número: 4
Paginación: 364-375
País: México
Idioma: Inglés
Tipo de documento: Artículo
Enfoque: Experimental, caso clínico
Resumen en inglés Objectives. Filibuvir is a non-nucleoside inhibitor of hepatitis C virus (HCV) polymerase. This study evaluated the safety and efficacy of filibuvir plus pegylated interferon alfa-2a (pegIFN)/ribavirin. Material and methods. Treatment-naïve, HCV genotype-1 patients were randomized to receive filibuvir 300 or 600 mg twice daily (BID) or placebo plus pegIFN (180 μg/wk) and ribavirin (1,000/1,200 mg BID) for 24 weeks. Filibuvir patients who achieved defined response through week 24 discontinued therapy at week 24. All other patients continued on open-label pegIFN/ribavirin through week 48. The primary endpoint was the proportion of patients who achieved sustained virologic response (SVR) defined as HCV RNA < 15 IU/mL at end of treatment (weeks 24 or 48) and week 72. Results. Overall, 288 patients were randomized and treated. SVR was achieved by 41.7, 39.6, and 45.8% of patients in the filibuvir 300 mg, 600 mg, and placebo arms, respectively. While the addition of filibuvir to pegIFN/ribavirin improved on-treatment virologic response parameters, this did not translate into improved SVR rates due to a high rate of virologic relapse following completion of therapy (300 mg: 35.9%; 600 mg: 42.9%; placebo: 25.4%). The most commonly reported adverse events were nausea, fatigue, headache, and insomnia, and were reported at similar rates across arms. Conclusions. Filibuvir plus pegIFN/ribavirin did not improve the percentage of patients achieving SVR compared with administration of pegIFN/ribavirin alone. However, the agent was well tolerated and was associated with higher on-treatment virologic response parameters. Further evaluation of filibuvir in combination with other direct-acting antiviral agents may be considered
Disciplinas: Medicina
Palabras clave: Gastroenterología,
Terapéutica y rehabilitación,
Hepatitis C,
NS5B,
Inhibidores,
Seguridad,
Eficacia,
Filibuvir,
Interferón pegilado
Keyword: Medicine,
Gastroenterology,
Therapeutics and rehabilitation,
Hepatitis C,
NS5B,
Inhibitors,
Safety,
Efficacy,
Filibuvir,
Pegylated interferon
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