Conditions: Chronic Hepatitis C
Keywords: PEG-Intron Ribavirin Protease Inhibitor
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 357
Healthy volunteers: no

Brief summary:
The primary objective of this study is to determine the safe and effective dose range of boceprevir (SCH 503034) in combination with PEG-Intron in adult subjects who have chronic hepatitis C without cirrhosis, and who have failed an adequate course of combination therapy with peginterferon-alfa plus ribavirin. A secondary objective is to explore whether ribavirin provides an additional benefit when combined with PEG-Intron plus boceprevir.

Detailed description:

Arms:
arm 1: A single dose of PEG is given first, followed 1 week later by PEG + RBV for 12 weeks. If HCV-RNA is undetected, PEG + RBV will continue for another 36 weeks. arm 2: A single dose of PEG is given first, followed 1 week later by PEG + RBV for 12 weeks. If HCV-RNA is detectable, BOC 400 mg TID will be added for 36 weeks. By second protocol amendment to P03659, participants will be rolled over into Arm 8 for the remainder of the treatment period. arm 3: A single dose of PEG is given first, followed 1 week later by PEB + BOC 100 for 48 weeks. By second protocol amendment to P03659, participants will be rolled over into Arm 8 for the remainder of the treatment period. arm 4: A single dose of PEG is given first, followed 1 week later by PEG + BOC 200 for 48 weeks. By second protocol amendment to P03659, participants will be rolled over into Arm 8 for the remainder of the treatment period. arm 5: A single dose of PEG is given first, followed 1 week later by PEG + BOC 400 for 48 weeks. By second protocol amendment to P03659, participants will be rolled over into Arm 8 for the remainder of the treatment period. arm 6: A single dose of PEG is given first, followed 1 week later by PEG + RBV + BOC 400 for 48 weeks. By second protocol amendment to P03659, participants will be rolled over into Arm 8 for the remainder of the treatment period. arm 7: A single dose of PEG is given first, followed 1 week later by PEG + BOC 400 for 24 weeks. By second protocol amendment to P03659, participants will be rolled over into Arm 8 for the remainder of the treatment period. arm 8: By first protocol amendment to P03659, this non-randomized arm is added. A single dose of PEG is given first, followed 1 week later by PEG + BOC 800 for 24 weeks. By second protocol amendment to P03659, participants will be rolled over into Arm 8 for the remainder of the treatment period. arm 9: By second protocol amendment to P03659, participants from all arms except Arm 1A will be rolled over into PEG + RBV + BOC 800 for the remainder of the treatment period.

Interventions: intervention 1: Boceprevir (BOC) intervention 2: PegIntron (PEG) intervention 3: Ribavirin (RBV)
Intervention descriptions: intervention 1: 100 or 200 mg capusles taken orally as 100 mg, 200 mg, 400 mg, or 800 mg TID intervention 2: 1.5 mcg/kg weekly subcutaneously intervention 3: 200 mg capsules taken twice daily (BID) (total daily dose of 800-1400 mg/day, depending on weight \[weight-based dosing {WBD}\])

Protocol document: