Study of High Dosage CIFN Plus RBV for HCV Genotype 1 Infected Patients Who Are Nonresponders to Prior Therapy

Summary

The main purpose of this study is to evaluate the safety and tolerability of combination therapy of daily interferon alfacon-1 (Infergen, CIFN) at high dosage (24 mcg) with ribavirin (based on body weight) for 48 weeks in HCV genotype 1 infected subjects, who are non-responders to previous pegylated interferon alfa plus ribavirin therapy. This is an open-label, multicenter study. All subjects will receive Infergen 24 mcg administered by injection daily plus ribavirin 800-1400 mg (based on body weight) administered by mouth daily for 48 weeks \* If any 5 of the first 10 subjects can not tolerate the 24 mcg daily dosage of Infergen by week 4, as determined by the principal investigator, then the dosage of Infergen will be changed to 15 mcg administered by injection daily plus ribavirin 800-1400 mg (based on body weight) administered by mouth daily for 48 weeks

Timeline

Start

2005-12

Primary completion

2007-05

Completion

2007-05

Publications

• Background Cornberg M, Hadem J, Schuppert F, Reiser M, Schmidt H, Marschal O, et al. 2002. Retreatment of hepatitis C nonresponder patients with consensus interferon and ribavirin: a randomized controlled multicenter study. Hepatology 36(4 pt 2): 575A.
• Results Barbaro G, Barbarini G. Consensus interferon for chronic hepatitis C patients with genotype 1 who failed to respond to, or relapsed after, interferon alpha-2b and ribavirin in combination: an Italian pilot study. Eur J Gastroenterol Hepatol. 2002 May;14(5):477-83. doi: 10.1097/00042737-200205000-00003.
• Results da Silva LC, Bassit L, Ono-Nita SK, Pinho JR, Nishiya A, Madruga CL, Carrilho FJ. High rate of sustained response to consensus interferon plus ribavirin in chronic hepatitis C patients resistant to alpha-interferon and ribavirin: a pilot study. J Gastroenterol. 2002;37(9):732-6. doi: 10.1007/s005350200119.
• Results Buggisch P, Seegers B, Hinrichsen H, Hueppe D, Reiser M, de Heer G, et al. 2002. Combination treatment with consensus-interferon and ribavirin for chronic hepatitis C patients with non-response relapse to previous treatment with alpha-interferon and ribavirin. Hepatology 36 (4 pt 2): 363A.
• Results Hass HG, Nehls O, Gregor M, Kaiser S, Kreysel C. Treatment of chronic hepatitis C in naive patients with high-dose interferon-alpha2a induction therapy and two different ribavirin doses. Dig Liver Dis. 2004 May;36(5):367-8. doi: 10.1016/j.dld.2004.01.009. No abstract available.
• Results Kaiser S, Hass H, gregor M. 2002B. High viral response rates in previous interferon/ribavirin nonresponder patients with chronic hepatitis C retreated with consensus interferon. Hepatology 36(4 pt 2): 358A.
• Results Kaiser S, Hass H, Gregor M. 2003. Successful retreatment of Peginterferon nonresponder patients with chronic hepatitis C with high dose consensus interferon induction therapy. Gastroenterology 124(4):A214.

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