Safety and Efficacy of LDV/SOF Fixed-Dose Combination (FDC) ± Ribavirin in HCV Genotype 1 Subjects

October 19, 2018 updated by: Gilead Sciences

A Phase 2, Randomized, Open-Label Study of Sofosbuvir/GS-5885 Fixed-Dose Combination ± Ribavirin in Subjects With Chronic Genotype 1 HCV Infection

This study is to evaluate the safety, tolerability, and antiviral efficacy of ledipasvir/sofosbuvir (LDV/SOF) fixed-dose combination (FDC) with or without ribavirin (RBV), administered for 8 or 12 weeks of treatment in participants with chronic genotype 1 hepatitis C virus (HCV) infection who are treatment-naive, and for 12 weeks in participants who had previously received a regimen containing a protease inhibitor for the treatment of HCV.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

100

Phase

  • Phase 2

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Age ≥ 18 years, with chronic genotype 1 HCV infection
  • HCV RNA equal to or greater than 10,000 IU/mL at screening
  • Cirrhosis determination; a liver biopsy may be required
  • Screening laboratory values within defined thresholds
  • Use of two effective contraception methods if female of childbearing potential or sexually active male

Exclusion Criteria:

  • Pregnant or nursing female or male with pregnant female partner
  • Current or prior history of clinical hepatic decompensation
  • Hepatocellular carcinoma (HCC) or other malignancy (with exception of certain resolved skin cancers)
  • Chronic use of systemic immunosuppressive agents
  • History of clinically significant illness or any other medical disorder that may interfere with subject treatment, assessment or compliance with the protocol

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: LDV/SOF 8 Weeks (TN)
Treatment-naive (TN) participants will be randomized to receive LDV/SOF for 8 weeks.
Drug: LDV/SOF
LDV 90 mg/SOF 400 mg FDC tablet administered orally once daily
Other Names:
  • Harvoni®
Experimental: LDV/SOF+RBV 8 Weeks (TN)
Treatment-naive participants will be randomized to receive LDV/SOF plus RBV for 8 weeks.
Drug: LDV/SOF
LDV 90 mg/SOF 400 mg FDC tablet administered orally once daily
Other Names:
  • Harvoni®
Drug: RBV
RBV 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)
Experimental: LDV/SOF 12 Weeks (TN)
Treatment-naive participants will be randomized to receive LDV/SOF for 12 weeks.
Drug: LDV/SOF
LDV 90 mg/SOF 400 mg FDC tablet administered orally once daily
Other Names:
  • Harvoni®
Experimental: LDV/SOF 12 Weeks (TE)
Treatment-experienced (TE) participants (had virologic failure following prior therapy with a protease-inhibitor [PI]+pegylated interferon [PEG]+RBV regimen) will be randomized to receive LDV/SOF for 12 weeks.
Drug: LDV/SOF
LDV 90 mg/SOF 400 mg FDC tablet administered orally once daily
Other Names:
  • Harvoni®
Experimental: LDV/SOF+RBV 12 Weeks (TE)
Treatment-experienced participants (had virologic failure following prior therapy with a PI+PEG+RBV regimen) will be randomized to receive LDV/SOF plus RBV for 12 weeks.
Drug: LDV/SOF
LDV 90 mg/SOF 400 mg FDC tablet administered orally once daily
Other Names:
  • Harvoni®
Drug: RBV
RBV 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)

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Percentage of Participants With Sustained Virologic Response (SVR) at 12 Weeks After Discontinuation of Therapy (SVR12)
Time Frame: Posttreatment Week 12
SVR12 was defined as HCV RNA < the lower limit of quantitation (LLOQ; ie, 25 IU/mL) 12 weeks after stopping study treatment.
Posttreatment Week 12
Incidence of Adverse Events Leading to Permanent Discontinuation of Study Drug(s)
Time Frame: Baseline to Week 12
The number of participants experiencing an adverse event leading to permanent discontinuation of study drug(s) was summarized.
Baseline to Week 12

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Percentage of Participants With SVR at 2, 4, 8, and 24 Weeks After Discontinuation of Therapy (SVR2, SVR4, SVR8, and SVR24)
Time Frame: Posttreatment Weeks 2, 4, 8, and 24
SVR2, SVR4, SVR8, and SVR24 was defined as HCV RNA < LLOQ at 2, 4, 8, and 24 weeks following the last dose of study drug, respectively.
Posttreatment Weeks 2, 4, 8, and 24
Percentage of Participants Experiencing Viral Breakthrough or Viral Relapse
Time Frame: Baseline to Posttreatment Week 24
  • Viral breakthrough was defined as HCV RNA ≥ LLOQ after having previously had HCV RNA < LLOQ while receiving treatment, confirmed with 2 consecutive values (second confirmation value could be posttreatment), or last available on-treatment measurement with no subsequent follow-up values.
  • Viral relapse was defined as HCV RNA ≥ LLOQ during the posttreatment period having achieved HCV RNA < LLOQ at end of treatment, confirmed with 2 consecutive values or last available posttreatment measurement.
Baseline to Posttreatment Week 24

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Gilead Sciences

Investigators

  • Study Director: Rob Hyland, Gilead Sciences

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start

October 1, 2012

Primary Completion (Actual)

July 1, 2013

Study Completion (Actual)

January 1, 2014

Study Registration Dates

First Submitted

November 10, 2012

First Submitted That Met QC Criteria

November 10, 2012

First Posted (Estimate)

November 15, 2012

Study Record Updates

Last Update Posted (Actual)

November 16, 2018

Last Update Submitted That Met QC Criteria

October 19, 2018

Last Verified

November 1, 2014

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • GS-US-337-0118

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

Yes

IPD Plan Description

Qualified external researchers may request IPD for this study after study completion. For more information, please visit our website at http://www.gilead.com/research/disclosure-and-transparency.

IPD Sharing Time Frame

18 months after study completion

IPD Sharing Access Criteria

A secured external environment with username, password, and RSA code.

IPD Sharing Supporting Information Type

  • Study Protocol
  • Statistical Analysis Plan (SAP)

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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