Part A: Drug Interaction Study of Sofosbuvir and Antiretroviral Therapy (ART) Combinations in HIV and Hepatitis C Virus (HCV) Co-infected Patients. Part B: Efficacy and Safety of Sofosbuvir for 12 Weeks in HIV/HCV Co-infected Patients.

September 25, 2014 updated by: Gilead Sciences

Part A: Drug Interaction Study Between GS-7977 and Antiretroviral Therapy (ARV) Combinations of Efavirenz, Tenofovir and Emtricitabine; Efavirenz, Zidovudine and Lamivudine; Atazanavir/Ritonavir, Tenofovir and Emtricitabine; Darunavir/Ritonavir, Tenofovir and Emtricitabine; Raltegravir, Tenofovir and Emtricitabine in Human Immunodeficiency Virus and Hepatitis C Virus (HIV/HCV) Co-infected Patients. Part B: A Phase 2, Open-Label Study to Investigate the Efficacy and Safety of GS-7977 With Peginterferon Alfa 2a and Ribavirin for 12 Weeks in Treatment-Naïve HIV/HCV Co-infected Patients.

This study consists of 2 parts, Part A and Part B. Part A, the Phase 1 drug interaction/early viral kinetic study, will evaluate the effect of selected antiretroviral therapies on the safety, viral kinetics, and pharmacokinetics of sofosbuvir (GS-7977; PSI-7977) and its metabolites in participants with HIV and hepatitis C virus (HCV) coinfection. Part B, the Phase 2 treatment study, will investigate the efficacy and safety of sofosbuvir, pegylated interferon alpha (PEG) and ribavirin (RBV) in participants with HIV/HCV coinfection.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
52

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 2
  • Phase 1

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

  • Puerto Rico
      • San Juan, Puerto Rico, 00927
        • Fundacion De Investigacion de Diego

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

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

21 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Healthy according to medical history and physical examination with exception of HCV and HIV diagnoses
  • Confirmation of Chronic HCV infection
  • Confirmation of Chronic HIV-1 infection
  • On a stable protocol approved HIV antiretroviral (ARV) regimen with undetectable HIV-RNA
  • 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
  • Subjects must be naive to treatment for chronic HCV infection

Exclusion Criteria:

  • Known or suspected cirrhosis
  • History of any other clinically significant chronic liver disease
  • A history consistent with decompensated liver disease.
  • Use of any prohibited medications as defined by the protocol
  • Pregnant or nursing female or male with pregnant female partner
  • Contraindication to PEG or RBV therapy (for Part B)
  • Clinically relevant drug or alcohol abuse

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: Non-Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Part A: SOF+EFV/FTC/TDF (Cohort 1)
Participants with a prestudy regimen of EFV/FTC/TDF will receive SOF+EFV/FTC/TDF FDC for 7 days, followed by EFV/FTC/TDF FDC (or EFV+FTC/TDF) for 7 days, coadministered once daily in the evening under fasting conditions.
Drug: SOF
Sofosbuvir (SOF) 400 mg (1 × 400 mg tablet or 2 × 200 mg tablets) administered orally once daily
Other Names:
  • Sovaldi®
  • GS-7977
  • PSI-7977
Drug: EFV/FTC/TDF
Efavirenz (EFV) 600 mg/emtricitabine (FTC) 200 mg/tenofovir disoproxil fumarate (TDF) 300 mg fixed-dose combination (FDC) tablet administered orally once daily
Other Names:
  • Atripla®
Experimental: Part A: SOF+EFV+ZDV/3TC (Cohort 2)
Participants with a prestudy regimen of EFV+ZDV/3TC will receive SOF+EFV+ZDV/3TC for 7 days followed by EFV+ZDV/3TC for 7 days. Sofosbuvir and EFV will be administered once daily in the evening under fasting conditions; ZDV/3TC will be administered twice daily, in the morning without regard to food and in the evening on an empty stomach.
Drug: SOF
Sofosbuvir (SOF) 400 mg (1 × 400 mg tablet or 2 × 200 mg tablets) administered orally once daily
Other Names:
  • Sovaldi®
  • GS-7977
  • PSI-7977
Drug: EFV
Efavirenz (EFV) 600 mg tablet administered orally once daily
Other Names:
  • Sustiva®
Drug: ZDV/3TC
Zidovudine (ZDV) 300 mg/lamivudine (3TC) 150 mg FDC tablet administered orally twice daily
Other Names:
  • Combivir®
Experimental: Part A: SOF+RTV+ATV+FTC/TDF (Cohort 3)
Participants with a prestudy regimen of RTV+ATV+FTC/TDF will receive SOF+RTV+ATV+FTC/TDF for 7 days followed by RTV+ATV+FTC/TDF for 7 days coadministered once daily in the morning with food.
Drug: SOF
Sofosbuvir (SOF) 400 mg (1 × 400 mg tablet or 2 × 200 mg tablets) administered orally once daily
Other Names:
  • Sovaldi®
  • GS-7977
  • PSI-7977
Drug: ATV
Atazanavir (ATV) 400 mg tablet administered orally once daily
Drug: Ritonavir
Ritonavir (RTV) 100 mg tablet administered orally once daily
Drug: FTC/TDF
FTC/TDF (200/300 mg) FDC tablet administered orally once daily
Other Names:
  • Truvada®
Experimental: Part A: SOF+RTV+DRV+FTC/TDF (Cohort 4)
Participants with a prestudy regimen of RTV+DRV+FTC/TDF will receive SOF+RTV+DRV+FTC/TDF for 7 days followed by RTV+DRV+FTC/TDF for 7 days coadministered once daily in the morning with food.
Drug: SOF
Sofosbuvir (SOF) 400 mg (1 × 400 mg tablet or 2 × 200 mg tablets) administered orally once daily
Other Names:
  • Sovaldi®
  • GS-7977
  • PSI-7977
Drug: Ritonavir
Ritonavir (RTV) 100 mg tablet administered orally once daily
Drug: FTC/TDF
FTC/TDF (200/300 mg) FDC tablet administered orally once daily
Other Names:
  • Truvada®
Drug: DRV
Darunavir (DRV) 800 mg (2 × 400 mg tablets) administered orally once daily
Experimental: Part A: SOF+RAL+FTC/TDF (Cohort 5)
Participants with a prestudy regimen of RAL+FTC/TDF will receive SOF+RAL+FTC/TDF for 7 days followed by RAL+FTC/TDF for 7 days. Sofosbuvir and FTC/TDF will be administered once daily in the morning with food; RAL will be administered twice daily, in the morning with food and in the evening without regard to food.
Drug: SOF
Sofosbuvir (SOF) 400 mg (1 × 400 mg tablet or 2 × 200 mg tablets) administered orally once daily
Other Names:
  • Sovaldi®
  • GS-7977
  • PSI-7977
Drug: FTC/TDF
FTC/TDF (200/300 mg) FDC tablet administered orally once daily
Other Names:
  • Truvada®
Drug: RAL
Raltegravir (RAL) 400 mg administered administered orally twice daily
Experimental: Part B: SOF+PEG+RBV
Participants will receive SOF+PEG+RBV for 12 weeks.
Drug: RBV
Ribavirin (RBV) tablets administered orally in a divided daily dose according to package insert weight-based dosing recommendations (< 75kg = 1000 mg and ≥ 75 kg = 1200 mg)
Other Names:
  • Ribasphere®
Drug: SOF
Sofosbuvir (SOF) 400 mg (1 × 400 mg tablet or 2 × 200 mg tablets) administered orally once daily
Other Names:
  • Sovaldi®
  • GS-7977
  • PSI-7977
Drug: PEG
Pegylated interferon alfa (PEG) 180 μg administered once weekly by subcutaneous injection
Other Names:
  • Pegasys®

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Incidence of Adverse Events Leading to Permanent Discontinuation of Study Drug(s)
Time Frame: Up to 12 weeks
The percentage of participants discontinuing any study drug due to an adverse event was summarized.
Up to 12 weeks
Part A: Plasma Pharmacokinetics of SOF, EFV, Tenofovir (TFV), and FTC: AUCtau at Day 7
Time Frame: Pre-dose and 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12 hours postdose

AUCtau: concentration of drug over time (area under the plasma concentration versus time curve over the dosing interval).

Data for this outcome measure were collected for participants in Part A only.
Pre-dose and 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12 hours postdose
Part A: Plasma Pharmacokinetics of SOF, EFV, TFV, and FTC: Cmax at Day 7
Time Frame: Pre-dose and 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12 hours postdose

Cmax: maximum observed concentration of drug in plasma.

Data for this outcome measure were collected for participants in Part A only.
Pre-dose and 0.5, 1, 1.5, 2, 3, 4, 6, 8, 10, 12 hours postdose
Part B: 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) at 12 weeks after stopping study treatment.

Data for this outcome measure were collected for participants in Part B only.
Posttreatment Week 12

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Part B: Percentage 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

SVR4 and SVR24 was defined as HCV RNA < LLOQ at 4 and 24 weeks following the last dose of study drug, respectively.

Data for this outcome measure were collected for participants in Part B only.
Posttreatment Weeks 4 and 24
Part B: Percentage of Participants Experiencing Viral Breakthrough or Viral Relapse
Time Frame: Posttreatment Weeks 4 and 24

Viral breakthrough was defined as having confirmed detectable HCV RNA levels (HCV RNA > LLOQ) on treatment after having previously had undetectable HCV RNA levels (HCV RNA < LLOQ) while on treatment.

Viral relapse was defined as having achieved undetectable HCV RNA levels (HCV RNA < LLOQ) at end of treatment, but did not achieve an SVR.

Data for this outcome measure were collected for participants in Part B only.
Posttreatment Weeks 4 and 24

Other Outcome Measures

Other Outcome Measures

For clinical trials, a planned measurement described in the protocol that is used to determine the effect of an intervention/treatment on participants. For observational studies, a measurement or observation that is used to describe patterns of diseases or traits, or associations with exposures, risk factors, or treatment. Types of outcome measures include primary outcome measure and secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Part B: On-treatment HCV RNA
Time Frame: Up to 8 weeks
Data for this outcome measure were collected for participants in Part B only.
Up to 8 weeks
Part B: On-treatment HIV RNA
Time Frame: Up to 8 weeks
Data for this outcome measure were collected for participants in Part B only.
Up to 8 weeks

Collaborators and Investigators

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

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Gilead Sciences

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Anuj Gaggar, MD/PhD, 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

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
March 1, 2012

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
August 1, 2013

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
November 1, 2013

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
March 27, 2012

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
March 28, 2012

First Posted (Estimate)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
March 29, 2012

Study Record Updates

Last Update Posted (Estimate)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
October 1, 2014

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 25, 2014

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
September 1, 2014

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • P7977-1910

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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