GS-7977 and Ribavirin in Treatment Naive and Treatment Experienced Subjects With Chronic Genotype 2 or 3 HCV Infection

This study has been completed.
Sponsor:
Information provided by (Responsible Party):
Gilead Sciences
ClinicalTrials.gov Identifier:
NCT01682720
First received: September 5, 2012
Last updated: January 31, 2014
Last verified: January 2014
  Purpose

This study will evaluate the safety, tolerability, and antiviral efficacy of GS-7977 with ribavirin (RBV) in participants with genotype 2 or 3 hepatitis C virus (HCV) infection.


Condition Intervention Phase
Hepatitis C
Drug: GS-7977
Drug: RBV
Drug: Placebo to match GS-7977
Drug: Placebo to match RBV
Phase 3

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator)
Primary Purpose: Treatment
Official Title: A Phase 3, Multicenter, Randomized, Double-Blind, Placebo-Controlled Study to Investigate the Efficacy and Safety of GS-7977+Ribavirin for 12 Weeks in Treatment Naive and Treatment Experienced Subjects With Chronic Genotype 2 or 3 HCV Infection.

Resource links provided by NLM:


Further study details as provided by Gilead Sciences:

Primary Outcome Measures:
  • Proportion of participants with sustained virologic response 12 weeks after discontinuation of therapy (SVR12) [ Time Frame: Posttreatment Week 12 ] [ Designated as safety issue: No ]
    SVR12 is defined as HCV RNA < the lower limit of quantitation (LLOQ) 12 weeks following the last dose of study drug.

  • Any adverse events leading to permanent discontinuation of study drug(s) [ Time Frame: Up to 24 weeks ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Proportion of participants with sustained virologic response at 4 and 24 weeks after discontinuation of therapy (SVR4 and SVR24) [ Time Frame: Posttreatment Weeks 4 and 24 ] [ Designated as safety issue: No ]
    SVR4 and SVR24 is defined as HCV RNA < LLOQ at 4 and 24 weeks following the last dose of study drug, respectively.

  • Proportion of participants experiencing viral breakthrough [ Time Frame: Baseline up to Week 24 ] [ Designated as safety issue: No ]
    Viral breakthrough is defined as having confirmed detectable HCV RNA levels (HCV RNA > LLOQ) after having previously had undetectable HCV RNA levels (HCV RNA < LLOQ) while on treatment.

  • Proportion of participants experiencing viral relapse [ Time Frame: Up to Posttreatment Week 24 ] [ Designated as safety issue: No ]
    Viral relapse is defined as having achieved undetectable HCV RNA levels (HCV RNA < LLOQ) at end of treatment, but did not achieve an SVR.


Enrollment: 421
Study Start Date: September 2012
Study Completion Date: January 2014
Primary Completion Date: October 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: GS-7977
Participants with genotype 2 will receive GS-7977 plus RBV for 12 weeks and participants with genotype 3 will receive GS-7977 plus RBV for 24 weeks.
Drug: GS-7977
GS-7977 400 mg tablet administered orally once daily
Other Names:
  • Sovaldi™
  • GS-7977
  • PSI-7977
Drug: RBV
Ribavirin (RBV) 200 mg tablets administered orally in a divided daily dose according to package insert weight-based dosing recommendations (< 75 kg = 1000 mg and ≥ 75 kg = 1200 mg)
Placebo Comparator: Placebo
Participants will receive placebo to match GS-7977 and placebo to match RBV.
Drug: Placebo to match GS-7977
Placebo to match GS-7977 tablet administered orally once daily
Drug: Placebo to match RBV
Placebo to match RBV tablets administered orally in a divided daily dose

  Eligibility

Ages Eligible for Study:   18 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Age > 18 with chronic genotype 2 or 3 HCV infection.
  • HCV RNA > 10,000 IU/mL at Screening.
  • Subjects must be treatment naïve or treatment experienced.
  • Presence or absence of cirrhosis; a liver biopsy may be required.
  • Healthy according to medical history and physical examination with the exception of HCV diagnosis.
  • Agree to use two forms of highly effective contraception for the duration of the study and 6 months after the last dose of study medication.

Exclusion Criteria:

  • Prior use of any other inhibitor of the HCV NS5B Polymerase.
  • History of any other clinically significant chronic liver disease.
  • Evidence of or history of decompensated liver disease.
  • HIV or chronic hepatitis B virus (HBV) infection.
  • Hepatocellular carcinoma (HCC) or other malignancy (with exception of certain resolved skin cancers).
  • Chronic use of immunosuppressive agents or immunomodulatory agents.
  • History or current evidence of any condition, therapy, laboratory abnormality or other circumstance that might confound the results of the study, or interfere with the subject's participation for the full duration of the study or not be in the best interest of the subject in the opinion of the investigator.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01682720

  Show 77 Study Locations
Sponsors and Collaborators
Gilead Sciences
Investigators
Study Director: Rob Hyland, DPhil Gilead Sciences Study Director
  More Information

No publications provided

Responsible Party: Gilead Sciences
ClinicalTrials.gov Identifier: NCT01682720     History of Changes
Other Study ID Numbers: GS-US-334-0133, 2012-001942-16
Study First Received: September 5, 2012
Last Updated: January 31, 2014
Health Authority: United States: Food and Drug Administration
Germany: Federal Institute for Drugs and Medical Devices
Austria: Federal Office for Safety in Health Care
Poland: Office for Registration of Medicinal Products, Medical Devices and Biocidal Products
Sweden: Medical Products Agency
Italy: Ethics Committee
France: Agence Nationale de Sécurité du Médicament et des produits de santé
United Kingdom: Medicines and Healthcare Products Regulatory Agency
Spain: Agencia Española de Medicamentos y Productos Sanitarios
Estonia: The State Agency of Medicine
Netherlands: The Central Committee on Research Involving Human Subjects (CCMO)

Keywords provided by Gilead Sciences:
HCV
Genotype 2
Genotype 3

Additional relevant MeSH terms:
Hepatitis
Hepatitis A
Hepatitis C
Liver Diseases
Digestive System Diseases
Hepatitis, Viral, Human
Virus Diseases
Enterovirus Infections
Picornaviridae Infections
RNA Virus Infections
Flaviviridae Infections
Ribavirin
Antiviral Agents
Anti-Infective Agents
Therapeutic Uses
Pharmacologic Actions
Antimetabolites
Molecular Mechanisms of Pharmacological Action

ClinicalTrials.gov processed this record on July 28, 2014