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A study to evaluate the effects of the combination of 4 oral antiviral agents for the treatment of patients infected with the Hepatitis C Virus (HCV).

A Phase 2 Randomized, Open-Label Study of GS-5885 Administered Concomitantly with GS-9451, Tegobuvir and Ribavirin (RBV) to Treatment-Naive Subjects with Chronic Genotype 1 HCV Infection

Status
Active, not recruiting
Phases
Unknown
Study type
Interventional
Source
EU CTR
Registry ID
EUCTR2011-000944-43-DE
Enrollment
120
Registered
2011-06-06
Start date
2011-08-09
Completion date
Unknown
Last updated
2013-02-04

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Genotype 1 Hepatitis C Virus Infection MedDRA version: 14.0 Level: SOC Classification code 10021881 Term: Infections and infestations System Organ Class: 10021881 - Infections and infestations MedDRA version: 14.0 Level: PT Classification code 10019744 Term: Hepatitis C System Organ Class: 10021881 - Infections and infestations

Interventions

Sponsors

Gilead Sciences Inc.
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Willing and able to provide written informed consent. 2. Male or female, aged from 18 to 70 years old, inclusive. 3. Chronic HCV infection for at least 6 months prior to Baseline (Day 1) 4. Subjects must have a liver biopsy performed = 2 years prior to Screening indicating the absence of cirrhosis. 5. Monoinfection with HCV GT 1a or 1b. 6. HCV treatment naïve Are the trial subjects under 18? no Number of subjects for this age range: 0 F.1.2 Adults (18-64 years) yes F.1.2.1 Number of subjects for this age range 108 F.1.3 Elderly (>=65 years) yes F.1.3.1 Number of subjects for this age range 12

Exclusion criteria

Exclusion criteria: 1. Pregnant female or male with pregnant female partner. 2. Poorly-controlled diabetes mellitus 3. History of clinically significant hemoglobinopathy 4. History of clinically significant retinal disease 5. History of invasive malignancy diagnosed or treated within 5 years 6. Untreated or significant psychiatric illnesses 7. Co-infection with HBV or HIV 12. Known cirrhosis 13. Chronic liver disease of a non-HCV etiology 14. History of solid organ transplantation 15. Suspicion of hepatocellular carcinoma

Design outcomes

Primary

MeasureTime frame
Main Objective: To evaluate the antiviral efficacy as measured by sustained virologic response (SVR, defined as HCV RNA < LLoQ 24 weeks post-treatment) of 30 mg or 90 mg GS-5885 when given with GS-9451, tegobuvir and RBV for 12 or 24 weeks To evaluate the safety and tolerability of 30 mg or 90 mg GS-5885 when given with GS-9451, tegobuvir and RBV for 12 or 24 weeks;Secondary Objective: To evaluate the antiviral efficacy at Weeks 1, 2, 4, 12 and 24, as measured by the rates of HCV RNA < LLoQ and viral breakthrough and relapse To evaluate the antiviral efficacy (as defined by SVR) of the addition of pegylated interferon (PEG) for 24 weeks to GS-5885, GS-9451 and RBV in subjects who experience viral breakthrough on treatment (Rescue Therapy Substudy) To evaluate the emergence of viral resistance during treatment with GS-9451, tegobuvir and RBV when given with 30 mg or 90 mg GS-5885 for 12 or 24 weeks To characterize viral dynamics and steady state pharmacokinetics of GS-5885, GS-9451, and tegobuvir when co-administered with RBV;Primary end point(s): The primary efficacy endpoint is SVR in all randomized and treated subjects, defined as HCV RNA < LLoQ at 24 weeks post-treatment.;Timepoint(s) of evaluation of this end point: 24 weeks post treament

Secondary

MeasureTime frame
Secondary end point(s): Secondary efficacy endpoints include: HCV RNA < LLoQ at Weeks 2, 4, 12 and 24, and SVR in each treatment arm with the addition of pegylated interferon (PEG) for 24 weeks to GS-5885, GS-9451, tegobuvir and RBV in subjects who experience viral breakthrough on treatment; proportion of subjects with breakthrough on therapy, relapse, and ALT normalization.;Timepoint(s) of evaluation of this end point: Weeks 2, 4, 12 and 24

Countries

France, Germany, United States

Contacts

Public ContactMedical Monitor

Gilead Sciences Inc

clinical.trials@gilead.com+1650574-3000

Outcome results

None listed

Source: EU CTR (via WHO ICTRP) · Data processed: Feb 4, 2026