A Study of TMC435 in Combination With PSI-7977 (GS7977) in Chronic Hepatitis C Genotype 1-Infected Prior Null Responders To Peginterferon/Ribavirin Therapy or HCV Treatment-Naive Patients (COSMOS)
Hepatitis C
About this trial
This is an interventional treatment trial for Hepatitis C focused on measuring Hepatitis C, TMC435, PSI-7977, GS7977, Ribavirin, HCV, Hep C, Genotype 1
Eligibility Criteria
Inclusion Criteria:
- Chronic genotype 1 hepatitis C virus (HCV) infection
- Plasma HCV RNA of more than 10,000 IU/mL at screening
- Patients in Cohort 1 must be null responders to PegIFN/ribavirin with at least 1 documented previous course of PegIFN/ribavirin therapy for at least 12 consecutive weeks
- Patients in Cohort 2 must be null responders to PegIFN/ribavirin with at least 1 documented previous course of PegIFN/ribavirin therapy for at least 12 consecutive weeks and could also be HCV treatment-naive, meaning never received treatment with any approved or investigational drug for the treatment of HCV
- Null responders patients in Cohort 1 and Cohort 2 must meet the defined criterion for a null responder, defined as on-treatment less than 2 log10 IU/mL reduction in HCV RNA from baseline at Week 12 of the most recent PegIFN/ribavirin therapy
- Patient must have had a liver biopsy within 3 years before screening (or between screening and baseline visit) or patient must have had a liver biopsy at any time in the past which showed Metavir F3 or F4 fibrosis
- Must agree to use 2 forms of effective contraception throughout the study (male and female)
Exclusion Criteria:
- Has evidence of hepatic decompensation
- Has any liver disease of non-HCV etiology
- Has an infection/co-infection with non-genotype 1 HCV
- Has a co-infection with Human immunodeficiency virus (HIV) type 1 or type 2 (HIV-1 or HIV-2) (positive HIV-1 or HIV-2 antibody test at screening)
- Has a co-infection with hepatitis B virus (hepatitis B surface antigen [HBsAg] positive)
- Has a history of malignancy within 5 years of the screening visit
Sites / Locations
Arms of the Study
Arm 1
Arm 2
Arm 3
Arm 4
Experimental
Experimental
Experimental
Experimental
Arm 1
Arm 2
Arm 3
Arm 4
30 patients will receive TMC435 (150 mg once a day) plus PSI-7977(GS7977) (400 mg once a day) with ribavirin (1000-1200 mg/day) for 24 weeks and followed by a 24-week follow-up phase.
15 patients wiil receive TMC435 (150 mg once a day) plus PSI-7977 (GS7977) (400 mg once a day) for 24 weeks of and followed by a 24-week follow-up phase.
30 patients will receive TMC435 (150 mg once a day) plus PSI-7977 (GS7977) (400 mg once a day) with ribavirin (1000-1200 mg/day) for 12 weeks and followed by a 36-week follow-up phase.
15 patients will receive TMC435 (150 mg once a day) plus PSI-7977 (GS7977) (400 mg once a day) for 12 weeks and followed by a 36-week follow-up phase.