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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT01965535
Other study ID # GS-US-337-0121
Secondary ID 2013-002296-17
Status Completed
Phase Phase 2
First received
Last updated
Start date October 2013
Est. completion date November 2014

Study information

Verified date June 2016
Source Gilead Sciences
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

This study is to determine the antiviral efficacy of sofosbuvir (SOF)/ledipasvir (LDV) fixed-dose combination (FDC) with and without ribavirin (RBV), and to evaluate the safety and tolerability of each regimen as assessed by review of the accumulated safety data. Approximately 150 participants with genotype 1 HCV infection, who have previously received treatment for HCV, and who have a diagnosis for cirrhosis will be enrolled. Participants will be randomized to 1 of 2 groups.

Group 1: SOF/LDV FDC tablet plus placebo to match RBV for 24 weeks

Group 2: Delayed treatment group: placebo to match SOF/LDV FDC plus placebo to match RBV for 12 weeks, followed by SOF/LDV FDC once daily plus RBV in a divided daily dose for 12 weeks

Randomization will 1:1 to the two groups and will be stratified by HCV genotype (1a, 1b; mixed or other genotype 1 results will be stratified as genotype 1a), and prior HCV therapy treatment response (never achieved HCV RNA < the lower limit of quantitation (LLOQ), or achieved HCV RNA < LLOQ).


Recruitment information / eligibility

Status Completed
Enrollment 155
Est. completion date November 2014
Est. primary completion date August 2014
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria:

- Age equal to or greater than 18 years, with chronic genotype 1 HCV infection

- HCV RNA = 10,000 IU/mL at screening

- Prior virological failure after treatment with pegylated interferon (PEG-IFN), RBV and a protease inhibitor following documented prior virology failure after treatment with a PEG-IFN + RBV regimen

- Evidence of cirrhosis

- 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

- Prior exposure to approved or experimental HCV specific direct-acting antivirals other than a nonstructural protein (NS)3/4A protease inhibitor

- History of solid organ transplantation, including liver transplant

- Hepatocellular carcinoma 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 Design


Related Conditions & MeSH terms


Intervention

Drug:
LDV/SOF
LDV/SOF (90/400 mg) FDC tablet administered orally once daily
RBV
RBV (200 mg tablets) administered orally in a divided daily dose based on weight (1000 mg per day for participants weighing < 75 kg; 1200 mg per day for participants weighing = 75 kg)
Placebo to match LDV/SOF
Placebo to match LDV/SOF administered orally once daily
Placebo to match RBV
Placebo to match RBV administered orally in a divided daily dose

Locations

Country Name City State
n/a

Sponsors (1)

Lead Sponsor Collaborator
Gilead Sciences

Country where clinical trial is conducted

France, 

Outcome

Type Measure Description Time frame Safety issue
Primary Percentage of Participants With Sustained Virologic Response (SVR) 12 Weeks After Discontinuation of Therapy (SVR12) SVR12 was defined as HCV RNA < the lower limit of quantitation (LLOQ; ie, < 25 IU/mL) 12 weeks following the last dose of study drug.
1 participant who was randomized to the LDV/SOF + RBV group who received placebo discontinued prior to receiving LDV/SOF + RBV and is excluded from the Full Analysis Set.
1 participant who was randomized to the LDV/SOF + RBV group received LDV/SOF + placebo, and is counted in the LDV/SOF group for the safety analysis, and in the LDV/SOF+RBV group for the efficacy analysis (ie, in the Full Analysis Set).
Posttreatment Week 12
Secondary Percentage of Participants With SVR at 4 and 24 Weeks After Discontinuation of Therapy (SVR4 and SVR24) SVR4 and SVR24 were defined as HCV RNA < LLOQ at 4 and 24 weeks following the last dose of study drug, respectively. Posttreatment Weeks 4 and 24
Secondary Percentage of Participants With HCV RNA < LLOQ (ie, < 25 IU/mL) at Weeks 1, 2, 4, 8, 12, and 24 Weeks 1, 2, 4, 8, 12, and 24
Secondary Change From Baseline in HCV RNA at Weeks 1, 2, 4, 8, and 12 Baseline; Weeks 1, 2, 4, 8, and 12
Secondary Percentage of Participants With Virologic Failure Virologic failure is defined as
On-treatment virologic failure:
Breakthrough (confirmed HCV RNA = LLOQ after having previously had HCV RNA < LLOQ while on treatment), or
Rebound (confirmed > 1 log10 IU/mL increase in HCV RNA from nadir while on treatment), or
Non-response (HCV RNA persistently = LLOQ through 8 weeks of treatment)
Virologic relapse:
Confirmed HCV RNA = LLOQ during the posttreatment period having achieved HCV RNA < LLOQ at last on-treatment visit.
Baseline to Posttreatment Week 24
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