Safety and Efficacy of Voxilaprevir Plus Sofosbuvir/Velpatasvir Fixed Dose Combination in Adults With Chronic Genotype 1 HCV Infection

Sponsor
Gilead Sciences (Industry)
Overall Status
Completed
CT.gov ID
NCT02378935
Collaborator
(none)
205
34
10
13.8
6
0.4

Study Details

Study Description

Brief Summary

This primary objectives of the study are to evaluate the safety, tolerability, and efficacy of voxilaprevir (VOX) plus sofosbuvir/velpatasvir (SOF/VEL) fixed dose combination (FDC) ± ribavirin (RBV) in adults with chronic genotype 1 hepatitis C virus (HCV) infection.

Condition or Disease Intervention/Treatment Phase
Phase 2

Study Design

Study Type:
Interventional
Actual Enrollment :
205 participants
Allocation:
Non-Randomized
Intervention Model:
Sequential Assignment
Masking:
None (Open Label)
Primary Purpose:
Treatment
Official Title:
A Phase 2, Global, Multicenter, Open-Label Study to Investigate the Safety and Efficacy of GS-9857 Plus Sofosbuvir/GS-5816 Fixed Dose Combination in Subjects With Chronic Genotype 1 HCV Infection
Actual Study Start Date :
Feb 17, 2015
Actual Primary Completion Date :
Feb 1, 2016
Actual Study Completion Date :
Apr 12, 2016

Arms and Interventions

Arm Intervention/Treatment
Experimental: VOX+SOF/VEL 6 wk, TN, without cirrhosis

VOX + SOF/VEL for 6 weeks (treatment naive (TN), without cirrhosis)

Drug: VOX
100 mg tablet(s) administered orally once daily with food
Other Names:
  • GS-9857
  • Drug: SOF/VEL
    400/100 mg FDC tablet administered orally once daily with food
    Other Names:
  • GS-7977/GS-5816
  • Epclusa®
  • Experimental: VOX+SOF/VEL 8 wk, TN, without cirrhosis

    VOX + SOF/VEL for 8 weeks (treatment naive, without cirrhosis)

    Drug: VOX
    100 mg tablet(s) administered orally once daily with food
    Other Names:
  • GS-9857
  • Drug: SOF/VEL
    400/100 mg FDC tablet administered orally once daily with food
    Other Names:
  • GS-7977/GS-5816
  • Epclusa®
  • Experimental: VOX+SOF/VEL 6 wk, TN, with cirrhosis

    VOX + SOF/VEL for 6 weeks (treatment naive, with cirrhosis)

    Drug: VOX
    100 mg tablet(s) administered orally once daily with food
    Other Names:
  • GS-9857
  • Drug: SOF/VEL
    400/100 mg FDC tablet administered orally once daily with food
    Other Names:
  • GS-7977/GS-5816
  • Epclusa®
  • Experimental: VOX+SOF/VEL 8 wk, TN, with cirrhosis

    VOX + SOF/VEL for 8 weeks (treatment naive, with cirrhosis)

    Drug: VOX
    100 mg tablet(s) administered orally once daily with food
    Other Names:
  • GS-9857
  • Drug: SOF/VEL
    400/100 mg FDC tablet administered orally once daily with food
    Other Names:
  • GS-7977/GS-5816
  • Epclusa®
  • Experimental: VOX+SOF/VEL+RBV 8 wk, TN, with cirrhosis

    VOX + SOF/VEL+RBV for 8 weeks (treatment naive, with cirrhosis)

    Drug: VOX
    100 mg tablet(s) administered orally once daily with food
    Other Names:
  • GS-9857
  • Drug: SOF/VEL
    400/100 mg FDC tablet administered orally once daily with food
    Other Names:
  • GS-7977/GS-5816
  • Epclusa®
  • Drug: 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: VOX+SOF/VEL 8 wk, DAA-E, without cirrhosis

    VOX + SOF/VEL for 8 weeks (direct-acting antiviral experienced (DAA-E), without cirrhosis)

    Drug: VOX
    100 mg tablet(s) administered orally once daily with food
    Other Names:
  • GS-9857
  • Drug: SOF/VEL
    400/100 mg FDC tablet administered orally once daily with food
    Other Names:
  • GS-7977/GS-5816
  • Epclusa®
  • Experimental: VOX+SOF/VEL 12 wk, DAA-E, without cirrhosis

    VOX + SOF/VEL for 12 weeks (direct-acting antiviral experienced, without cirrhosis)

    Drug: VOX
    100 mg tablet(s) administered orally once daily with food
    Other Names:
  • GS-9857
  • Drug: SOF/VEL
    400/100 mg FDC tablet administered orally once daily with food
    Other Names:
  • GS-7977/GS-5816
  • Epclusa®
  • Experimental: VOX+SOF/VEL 8 wk, DAA-E, with cirrhosis

    GS-9857 + SOF/VEL for 8 weeks (direct-acting antiviral experienced, with cirrhosis)

    Drug: VOX
    100 mg tablet(s) administered orally once daily with food
    Other Names:
  • GS-9857
  • Drug: SOF/VEL
    400/100 mg FDC tablet administered orally once daily with food
    Other Names:
  • GS-7977/GS-5816
  • Epclusa®
  • Experimental: VOX+SOF/VEL 12 wk, DAA-E, with cirrhosis

    GS-9857 + SOF/VEL for 12 weeks (direct-acting antiviral experienced, with cirrhosis)

    Drug: VOX
    100 mg tablet(s) administered orally once daily with food
    Other Names:
  • GS-9857
  • Drug: SOF/VEL
    400/100 mg FDC tablet administered orally once daily with food
    Other Names:
  • GS-7977/GS-5816
  • Epclusa®
  • Experimental: VOX+SOF/VEL 12 wk (GS-US-338-1121)

    VOX + SOF/VEL for 12 weeks (participants who were previously enrolled in GS-US-338-1121 phase 1b study)

    Drug: VOX
    100 mg tablet(s) administered orally once daily with food
    Other Names:
  • GS-9857
  • Drug: SOF/VEL
    400/100 mg FDC tablet administered orally once daily with food
    Other Names:
  • GS-7977/GS-5816
  • Epclusa®
  • Outcome Measures

    Primary Outcome Measures

    1. Percentage of Participants With Sustained Virologic Response 12 Weeks After Discontinuation of Therapy (SVR12) [Posttreatment Week 12]

      SVR12 was defined as HCV RNA < the lower limit of quantitation (LLOQ) 12 weeks following the last dose of study treatment.

    2. Percentage of Participants Who Permanently Discontinued Any Study Drug Due to an Adverse Event [Up to 12 Weeks]

    Secondary Outcome Measures

    1. Percentage of Participants With Sustained Virologic Response 4 and 24 Weeks After Discontinuation of Therapy (SVR4 and SVR24) [Posttreatment Weeks 4 and 24]

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

    2. Percentage of Participants With HCV RNA < LLOQ on Treatment [Baseline through end of treatment (Week 6, Week 8 or Week 12, as applicable)]

    3. HCV RNA Change From Baseline [Baseline through end of treatment (Week 6, Week 8 or Week 12, as applicable)]

    4. Percentage of Participants With Virologic Failure [Up to Posttreatment Week 24]

      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.

    Eligibility Criteria

    Criteria

    Ages Eligible for Study:
    18 Years and Older
    Sexes Eligible for Study:
    All
    Accepts Healthy Volunteers:
    No
    Key Inclusion Criteria:
    • Individuals with chronic HCV infection

    • HCV RNA ≥10^4 IU/mL at screening

    • HCV genotype 1

    • Cirrhosis determination; a liver biopsy may be required

    • Screening laboratory values within defined thresholds

    • Use of two contraception methods if female of childbearing potential or sexually active male

    Key Exclusion Criteria:
    • Pregnant or nursing female

    • Current or prior history of hepatic decompensation

    • Hepatocellular carcinoma (HCC) or other clinically significant malignancy

    • Infection with hepatitis B virus (HBV) or human immunodeficiency virus (HIV)

    • History of clinically significant illness or any other medical disorder that may interfere with the individual's treatment, assessment or compliance with the protocol

    NOTE: Other protocol defined Inclusion/Exclusion criteria may apply.

    Contacts and Locations

    Locations

    Site City State Country Postal Code
    1 Cedars Sinai Medical Center Los Angeles California United States
    2 Stanford University Palo Alto California United States
    3 Huntington Memorial Hospital Liver Center Pasadena California United States
    4 Medical Associates Research Group, Inc. San Diego California United States
    5 University of Colorado Denver Colorado United States
    6 Borland-Groover Clinic Jacksonville Florida United States
    7 University of Miami Miami Florida United States
    8 Orlando Immunology center Orlando Florida United States
    9 South Florida Center of Gastroenterology, P.A. Wellington Florida United States
    10 Center for Hep C/Atlanta Medical Center Atlanta Georgia United States
    11 Gastrointestinal Specialists of Georgia, PC Marietta Georgia United States
    12 University of Chicago Chicago Illinois United States
    13 Indiana University Indianapolis Indiana United States
    14 Indianapolis Gastroenterology & Hepatology, Inc. Indianapolis Indiana United States
    15 Beth Isreal Deconess Medical Center Boston Massachusetts United States
    16 Massachusetts General Hospital Boston Massachusetts United States
    17 Henry Ford Hospital and Health System Detroit Michigan United States
    18 ID Care Hillsborough New Jersey United States
    19 Southwest Care Center Santa Fe New Mexico United States
    20 North Shore/Long Island Jewish PRIME Manhasset New York United States
    21 Mount Sinai Beth Israel New York New York United States
    22 Cumberland Research Associates, LLC Fayetteville North Carolina United States
    23 Digestive Health Specialists, PA Winston-Salem North Carolina United States
    24 University of Pennsylvania Health Systems Philadelphia Pennsylvania United States
    25 UPMC Center for Liver Diseases Pittsburgh Pennsylvania United States
    26 Medical University of South Carolina Charleston South Carolina United States
    27 Gastro One Germantown Tennessee United States
    28 Nashville Gastrointestinal Specialists, Inc. Nashville Tennessee United States
    29 Texas Liver Institute San Antonio Texas United States
    30 Liver Institute of Virginia Richmond Virginia United States
    31 Swedish Medical Center Seattle Washington United States
    32 Auckland Clinical Studies Auckland New Zealand
    33 Christchurch Clinical Studies Trust Christchurch New Zealand
    34 Fundacion de Investigacion de Diego San Juan Puerto Rico

    Sponsors and Collaborators

    • Gilead Sciences

    Investigators

    • Study Director: Gilead Study Director, Gilead Sciences

    Study Documents (Full-Text)

    None provided.

    More Information

    Publications

    None provided.
    Responsible Party:
    Gilead Sciences
    ClinicalTrials.gov Identifier:
    NCT02378935
    Other Study ID Numbers:
    • GS-US-367-1168
    First Posted:
    Mar 4, 2015
    Last Update Posted:
    Mar 6, 2020
    Last Verified:
    Nov 1, 2017
    Individual Participant Data (IPD) Sharing Statement:
    Yes
    Plan to Share IPD:
    Yes
    Studies a U.S. FDA-regulated Drug Product:
    Yes
    Studies a U.S. FDA-regulated Device Product:
    No
    Additional relevant MeSH terms:

    Study Results

    Participant Flow

    Recruitment Details Participants were enrolled at study sites in United States and New Zealand. The first participant was screened on 17 February 2015. The last study visit occurred on 12 April 2016.
    Pre-assignment Detail 255 participants were screened. Enrollment was sequential, with the longer treatment duration groups enrolled, treated, and evaluated for Sustained Virologic Response 4 Weeks After Discontinuation of Therapy (SVR4) prior to enrollment of the shorter treatment duration groups, which were not enrolled, at the discretion of the Sponsor.
    Arm/Group Title VOX+SOF/VEL 6 Weeks, Treatment Naive, Non Cirrhotic VOX+SOF/VEL 8 Weeks, Treatment Naive, Non Cirrhotic VOX+SOF/VEL 8 Weeks, Treatment Naive, Cirrhotic VOX+SOF/VEL+RBV 8 Weeks, Treatment Naive, Cirrhotic VOX+SOF/VEL 12 Weeks, DAA-Experienced, Non Cirrhotic VOX+SOF/VEL 12 Weeks, DAA-Experienced, Cirrhotic VOX+SOF/VEL 12 Weeks (GS-US-338-1121)
    Arm/Group Description Voxilaprevir (VOX) 100 mg tablet + sofosbuvir/veltapasvir (Epclusa® ; SOF/VEL) (400/100 mg) fixed-dose combination (FDC) tablet administered once daily for 6 weeks in treatment naive participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 8 weeks in treatment naive participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 8 weeks in treatment naive participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet + ribavirin (RBV) tablets (1000 or 1200 mg daily based on weight) administered once daily for 8 weeks in treatment naive participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in direct-acting antiviral (DAA) experienced participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in DAA-experienced participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in participants who were previously enrolled in Gilead sponsored phase 1b study GS-US-338-1121
    Period Title: Overall Study
    STARTED 34 36 33 31 31 32 8
    COMPLETED 24 36 30 25 31 32 8
    NOT COMPLETED 10 0 3 6 0 0 0

    Baseline Characteristics

    Arm/Group Title VOX+SOF/VEL 6 Weeks, Treatment Naive, Non Cirrhotic VOX+SOF/VEL 8 Weeks, Treatment Naive, Non Cirrhotic VOX+SOF/VEL 8 Weeks, Treatment Naive, Cirrhotic VOX+SOF/VEL+RBV 8 Weeks, Treatment Naive, Cirrhotic VOX+SOF/VEL 12 Weeks, DAA-Experienced, Non Cirrhotic VOX+SOF/VEL 12 Weeks, DAA-Experienced, Cirrhotic VOX+SOF/VEL 12 Weeks (GS-US-338-1121) Total
    Arm/Group Description VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 6 weeks in treatment naive participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC administered once daily for 8 weeks in treatment naive participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 8 weeks in treatment naive participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet + RBV tablets (1000 or 1200 mg daily based on weight) administered once daily for 8 weeks in treatment naive participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in DAA-experienced participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in DAA-experienced participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in participants who were previously enrolled in Gilead sponsored phase 1b study GS-US-338-1121 Total of all reporting groups
    Overall Participants 34 36 33 31 31 32 8 205
    Age (years) [Mean (Standard Deviation) ]
    Mean (Standard Deviation) [years]
    53
    (11.5)
    51
    (14.3)
    58
    (7.2)
    59
    (6.7)
    57
    (7.8)
    59
    (6.5)
    5.7
    (5.9)
    56
    (9.8)
    Sex: Female, Male (Count of Participants)
    Female
    11
    32.4%
    15
    41.7%
    14
    42.4%
    12
    38.7%
    8
    25.8%
    6
    18.8%
    5
    62.5%
    71
    34.6%
    Male
    23
    67.6%
    21
    58.3%
    19
    57.6%
    19
    61.3%
    23
    74.2%
    26
    81.3%
    3
    37.5%
    134
    65.4%
    Race/Ethnicity, Customized (Count of Participants)
    Black or African American
    3
    8.8%
    4
    11.1%
    7
    21.2%
    5
    16.1%
    4
    12.9%
    6
    18.8%
    0
    0%
    29
    14.1%
    White
    31
    91.2%
    32
    88.9%
    25
    75.8%
    26
    83.9%
    27
    87.1%
    26
    81.3%
    8
    100%
    175
    85.4%
    Native Hawaiian or Pacific Islander
    0
    0%
    0
    0%
    1
    3%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    1
    0.5%
    Race/Ethnicity, Customized (Count of Participants)
    Hispanic or Latino
    3
    8.8%
    5
    13.9%
    8
    24.2%
    7
    22.6%
    4
    12.9%
    10
    31.3%
    5
    62.5%
    42
    20.5%
    Not Hispanic or Latino
    31
    91.2%
    31
    86.1%
    25
    75.8%
    24
    77.4%
    27
    87.1%
    22
    68.8%
    3
    37.5%
    163
    79.5%
    Region of Enrollment (Count of Participants)
    United States
    32
    94.1%
    36
    100%
    28
    84.8%
    31
    100%
    31
    100%
    32
    100%
    8
    100%
    198
    96.6%
    New Zealand
    2
    5.9%
    0
    0%
    5
    15.2%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    7
    3.4%
    IL28b Status (Count of Participants)
    CC
    12
    35.3%
    9
    25%
    7
    21.2%
    12
    38.7%
    4
    12.9%
    4
    12.5%
    3
    37.5%
    51
    24.9%
    CT
    15
    44.1%
    21
    58.3%
    19
    57.6%
    12
    38.7%
    19
    61.3%
    21
    65.6%
    3
    37.5%
    110
    53.7%
    TT
    7
    20.6%
    4
    11.1%
    7
    21.2%
    6
    19.4%
    7
    22.6%
    7
    21.9%
    2
    25%
    40
    19.5%
    Missing
    0
    0%
    2
    5.6%
    0
    0%
    1
    3.2%
    1
    3.2%
    0
    0%
    0
    0%
    4
    2%
    HCV RNA (log10 IU/mL) [Mean (Standard Deviation) ]
    Mean (Standard Deviation) [log10 IU/mL]
    6.2
    (0.51)
    6.2
    (0.55)
    6.0
    (0.59)
    6.3
    (0.47)
    6.4
    (0.77)
    6.0
    (0.61)
    6.5
    (0.38)
    6.2
    (0.60)
    HCV RNA Category (Count of Participants)
    < 800,000 IU/mL
    6
    17.6%
    10
    27.8%
    14
    42.4%
    6
    19.4%
    6
    19.4%
    16
    50%
    0
    0%
    58
    28.3%
    ≥ 800,000 IU/mL
    28
    82.4%
    26
    72.2%
    19
    57.6%
    25
    80.6%
    25
    80.6%
    16
    50%
    8
    100%
    147
    71.7%

    Outcome Measures

    1. Primary Outcome
    Title Percentage of Participants With Sustained Virologic Response 12 Weeks After Discontinuation of Therapy (SVR12)
    Description SVR12 was defined as HCV RNA < the lower limit of quantitation (LLOQ) 12 weeks following the last dose of study treatment.
    Time Frame Posttreatment Week 12

    Outcome Measure Data

    Analysis Population Description
    Full Analysis Set (FAS): participants who received at least 1 dose of study drug
    Arm/Group Title VOX+SOF/VEL 6 Weeks, Treatment Naive, Non Cirrhotic VOX+SOF/VEL 8 Weeks, Treatment Naive, Non Cirrhotic VOX+SOF/VEL 8 Weeks, Treatment Naive, Cirrhotic VOX+SOF/VEL+RBV 8 Weeks, Treatment Naive, Cirrhotic VOX+SOF/VEL 12 Weeks, DAA-Experienced, Non Cirrhotic VOX+SOF/VEL 12 Weeks, DAA-Experienced, Cirrhotic VOX+SOF/VEL 12 Weeks (GS-US-338-1121)
    Arm/Group Description VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 6 weeks in treatment naive participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC administered once daily for 8 weeks in treatment naive participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 8 weeks in treatment naive participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet + RBV tablets (1000 or 1200 mg daily based on weight) administered once daily for 8 weeks in treatment naive participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in DAA-experienced participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in DAA-experienced participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in participants who were previously enrolled in Gilead sponsored phase 1b study GS-US-338-1121
    Measure Participants 34 36 33 31 31 32 8
    Number (95% Confidence Interval) [percentage of participants]
    70.6
    207.6%
    100.0
    277.8%
    93.9
    284.5%
    80.6
    260%
    100
    322.6%
    100.0
    312.5%
    100.0
    1250%
    2. Primary Outcome
    Title Percentage of Participants Who Permanently Discontinued Any Study Drug Due to an Adverse Event
    Description
    Time Frame Up to 12 Weeks

    Outcome Measure Data

    Analysis Population Description
    Safety Analysis Set
    Arm/Group Title VOX+SOF/VEL 6 Weeks, Treatment Naive, Non Cirrhotic VOX+SOF/VEL 8 Weeks, Treatment Naive, Non Cirrhotic VOX+SOF/VEL 8 Weeks, Treatment Naive, Cirrhotic VOX+SOF/VEL+RBV 8 Weeks, Treatment Naive, Cirrhotic VOX+SOF/VEL 12 Weeks, DAA-Experienced, Non Cirrhotic VOX+SOF/VEL 12 Weeks, DAA-Experienced, Cirrhotic VOX+SOF/VEL 12 Weeks (GS-US-338-1121)
    Arm/Group Description VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 6 weeks in treatment naive participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC administered once daily for 8 weeks in treatment naive participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 8 weeks in treatment naive participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet + RBV tablets (1000 or 1200 mg daily based on weight) administered once daily for 8 weeks in treatment naive participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in DAA-experienced participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in DAA-experienced participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in participants who were previously enrolled in Gilead sponsored phase 1b study GS-US-338-1121
    Measure Participants 34 36 33 31 31 32 8
    Number [percentage of participants]
    0
    0%
    0
    0%
    0
    0%
    6.5
    21%
    0
    0%
    0
    0%
    0
    0%
    3. Secondary Outcome
    Title Percentage of Participants With Sustained Virologic Response 4 and 24 Weeks After Discontinuation of Therapy (SVR4 and SVR24)
    Description SVR4 and SVR24 were defined as HCV RNA < LLOQ at 4 and 24 weeks following the last dose of study drug, respectively.
    Time Frame Posttreatment Weeks 4 and 24

    Outcome Measure Data

    Analysis Population Description
    Full Analysis Set
    Arm/Group Title VOX+SOF/VEL 6 Weeks, Treatment Naive, Non Cirrhotic VOX+SOF/VEL 8 Weeks, Treatment Naive, Non Cirrhotic VOX+SOF/VEL 8 Weeks, Treatment Naive, Cirrhotic VOX+SOF/VEL+RBV 8 Weeks, Treatment Naive, Cirrhotic VOX+SOF/VEL 12 Weeks, DAA-Experienced, Non Cirrhotic VOX+SOF/VEL 12 Weeks, DAA-Experienced, Cirrhotic VOX+SOF/VEL 12 Weeks (GS-US-338-1121)
    Arm/Group Description VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 6 weeks in treatment naive participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC administered once daily for 8 weeks in treatment naive participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 8 weeks in treatment naive participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet + RBV tablets (1000 or 1200 mg daily based on weight) administered once daily for 8 weeks in treatment naive participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in DAA-experienced participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in DAA-experienced participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in participants who were previously enrolled in Gilead sponsored phase 1b study GS-US-338-1121
    Measure Participants 34 36 33 31 31 32 8
    SVR4
    88.2
    259.4%
    100.0
    277.8%
    93.9
    284.5%
    87.1
    281%
    100.0
    322.6%
    100.0
    312.5%
    100.0
    1250%
    SVR24
    70.6
    207.6%
    100.0
    277.8%
    93.9
    284.5%
    80.6
    260%
    100.0
    322.6%
    100.0
    312.5%
    100.0
    1250%
    4. Secondary Outcome
    Title Percentage of Participants With HCV RNA < LLOQ on Treatment
    Description
    Time Frame Baseline through end of treatment (Week 6, Week 8 or Week 12, as applicable)

    Outcome Measure Data

    Analysis Population Description
    Participants in the Full Analysis Set with available data were analyzed
    Arm/Group Title VOX+SOF/VEL 6 Weeks, Treatment Naive, Non Cirrhotic VOX+SOF/VEL 8 Weeks, Treatment Naive, Non Cirrhotic VOX+SOF/VEL 8 Weeks, Treatment Naive, Cirrhotic VOX+SOF/VEL+RBV 8 Weeks, Treatment Naive, Cirrhotic VOX+SOF/VEL 12 Weeks, DAA-Experienced, Non Cirrhotic VOX+SOF/VEL 12 Weeks, DAA-Experienced, Cirrhotic VOX+SOF/VEL 12 Weeks (GS-US-338-1121)
    Arm/Group Description VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 6 weeks in treatment naive participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC administered once daily for 8 weeks in treatment naive participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 8 weeks in treatment naive participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet + RBV tablets (1000 or 1200 mg daily based on weight) administered once daily for 8 weeks in treatment naive participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in DAA-experienced participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in DAA-experienced participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in participants who were previously enrolled in Gilead sponsored phase 1b study GS-US-338-1121
    Measure Participants 34 36 33 31 31 32 8
    Week 1
    23.5
    69.1%
    38.9
    108.1%
    33.3
    100.9%
    16.1
    51.9%
    22.6
    72.9%
    28.1
    87.8%
    12.5
    156.3%
    Week 2
    79.4
    233.5%
    75.0
    208.3%
    63.6
    192.7%
    54.8
    176.8%
    58.1
    187.4%
    62.5
    195.3%
    75.0
    937.5%
    Week 4
    100.0
    294.1%
    94.4
    262.2%
    90.9
    275.5%
    96.8
    312.3%
    93.5
    301.6%
    96.9
    302.8%
    100.0
    1250%
    Week 6
    100.0
    294.1%
    100.0
    277.8%
    97.0
    293.9%
    100.0
    322.6%
    100.0
    322.6%
    100.0
    312.5%
    100.0
    1250%
    Week 8
    100.0
    294.1%
    100.0
    277.8%
    100.0
    303%
    100.0
    322.6%
    100.0
    322.6%
    100.0
    312.5%
    Week 10
    100.0
    294.1%
    100.0
    277.8%
    100.0
    303%
    Week 12
    100.0
    294.1%
    100.0
    277.8%
    100.0
    303%
    5. Secondary Outcome
    Title HCV RNA Change From Baseline
    Description
    Time Frame Baseline through end of treatment (Week 6, Week 8 or Week 12, as applicable)

    Outcome Measure Data

    Analysis Population Description
    Participants in the Full Analysis Set with available data were analyzed
    Arm/Group Title VOX+SOF/VEL 6 Weeks, Treatment Naive, Non Cirrhotic VOX+SOF/VEL 8 Weeks, Treatment Naive, Non Cirrhotic VOX+SOF/VEL 8 Weeks, Treatment Naive, Cirrhotic VOX+SOF/VEL+RBV 8 Weeks, Treatment Naive, Cirrhotic VOX+SOF/VEL 12 Weeks, DAA-Experienced, Non Cirrhotic VOX+SOF/VEL 12 Weeks, DAA-Experienced, Cirrhotic VOX+SOF/VEL 12 Weeks (GS-US-338-1121)
    Arm/Group Description VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 6 weeks in treatment naive participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC administered once daily for 8 weeks in treatment naive participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 8 weeks in treatment naive participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet + RBV tablets (1000 or 1200 mg daily based on weight) administered once daily for 8 weeks in treatment naive participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in DAA-experienced participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in DAA-experienced participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in participants who were previously enrolled in Gilead sponsored phase 1b study GS-US-338-1121
    Measure Participants 34 36 33 31 31 32 8
    Change at Week 1
    -4.64
    (0.556)
    -4.60
    (0.595)
    -4.15
    (0.733)
    -4.31
    (0.658)
    -4.40
    (0.577)
    -4.19
    (0.504)
    -4.71
    (0.486)
    Change at Week 2
    -5.00
    (0.504)
    -4.98
    (0.519)
    -4.57
    (0.662)
    -4.85
    (0.583)
    -4.97
    (0.711)
    -4.66
    (0.520)
    -5.27
    (0.450)
    Change at Week 4
    -5.07
    (0.514)
    -5.06
    (0.534)
    -4.81
    (0.576)
    -5.17
    (0.481)
    -5.22
    (0.755)
    -4.84
    (0.601)
    -5.35
    (0.385)
    Change at Week 6
    -5.07
    (0.514)
    -5.08
    (0.549)
    -4.84
    (0.586)
    -5.16
    (0.480)
    -5.24
    (0.767)
    -4.84
    (0.611)
    -5.35
    (0.385)
    Change at Week 8
    -5.08
    (0.549)
    -4.85
    (0.591)
    -5.16
    (0.480)
    -5.24
    (0.767)
    -4.84
    (0.611)
    -5.35
    (0.385)
    Change at Week 10
    -5.24
    (0.767)
    -4.84
    (0.611)
    -5.35
    (0.385)
    Change at Week 12
    -5.24
    (0.767)
    -4.84
    (0.611)
    -5.35
    (0.385)
    6. Secondary Outcome
    Title Percentage of Participants With Virologic Failure
    Description 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.
    Time Frame Up to Posttreatment Week 24

    Outcome Measure Data

    Analysis Population Description
    Full Analysis Set
    Arm/Group Title VOX+SOF/VEL 6 Weeks, Treatment Naive, Non Cirrhotic VOX+SOF/VEL 8 Weeks, Treatment Naive, Non Cirrhotic VOX+SOF/VEL 8 Weeks, Treatment Naive, Cirrhotic VOX+SOF/VEL+RBV 8 Weeks, Treatment Naive, Cirrhotic VOX+SOF/VEL 12 Weeks, DAA-Experienced, Non Cirrhotic VOX+SOF/VEL 12 Weeks, DAA-Experienced, Cirrhotic VOX+SOF/VEL 12 Weeks (GS-US-338-1121)
    Arm/Group Description VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 6 weeks in treatment naive participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC administered once daily for 8 weeks in treatment naive participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 8 weeks in treatment naive participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet + RBV tablets (1000 or 1200 mg daily based on weight) administered once daily for 8 weeks in treatment naive participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in DAA-experienced participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in DAA-experienced participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in participants who were previously enrolled in Gilead sponsored phase 1b study GS-US-338-1121
    Measure Participants 34 36 33 31 31 32 8
    Number [percentage of participants]
    29.4
    86.5%
    0
    0%
    6.1
    18.5%
    19.4
    62.6%
    0
    0%
    0
    0%
    0
    0%

    Adverse Events

    Time Frame Up to 12 weeks plus 30 days
    Adverse Event Reporting Description Safety Analysis Set
    Arm/Group Title VOX+SOF/VEL 6 Weeks, Treatment Naive, Non Cirrhotic VOX+SOF/VEL 8 Weeks, Treatment Naive, Non Cirrhotic VOX+SOF/VEL 8 Weeks, Treatment Naive, Cirrhotic VOX+SOF/VEL+RBV 8 Weeks, Treatment Naive, Cirrhotic VOX+SOF/VEL 12 Weeks, DAA-Experienced, Non Cirrhotic VOX+SOF/VEL 12 Weeks, DAA-Experienced, Cirrhotic VOX+SOF/VEL 12 Weeks (GS-US-338-1121)
    Arm/Group Description VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 6 weeks in treatment naive participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC administered once daily for 8 weeks in treatment naive participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 8 weeks in treatment naive participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet + RBV tablets (1000 or 1200 mg daily based on weight) administered once daily for 8 weeks in treatment naive participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in DAA-experienced participants without cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in DAA-experienced participants with cirrhosis VOX 100 mg tablet + SOF/VEL (400/100 mg) FDC tablet administered once daily for 12 weeks in participants who were previously enrolled in Gilead sponsored phase 1b study GS-US-338-1121
    All Cause Mortality
    VOX+SOF/VEL 6 Weeks, Treatment Naive, Non Cirrhotic VOX+SOF/VEL 8 Weeks, Treatment Naive, Non Cirrhotic VOX+SOF/VEL 8 Weeks, Treatment Naive, Cirrhotic VOX+SOF/VEL+RBV 8 Weeks, Treatment Naive, Cirrhotic VOX+SOF/VEL 12 Weeks, DAA-Experienced, Non Cirrhotic VOX+SOF/VEL 12 Weeks, DAA-Experienced, Cirrhotic VOX+SOF/VEL 12 Weeks (GS-US-338-1121)
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 0/34 (0%) 0/36 (0%) 0/33 (0%) 0/31 (0%) 0/31 (0%) 0/32 (0%) 0/8 (0%)
    Serious Adverse Events
    VOX+SOF/VEL 6 Weeks, Treatment Naive, Non Cirrhotic VOX+SOF/VEL 8 Weeks, Treatment Naive, Non Cirrhotic VOX+SOF/VEL 8 Weeks, Treatment Naive, Cirrhotic VOX+SOF/VEL+RBV 8 Weeks, Treatment Naive, Cirrhotic VOX+SOF/VEL 12 Weeks, DAA-Experienced, Non Cirrhotic VOX+SOF/VEL 12 Weeks, DAA-Experienced, Cirrhotic VOX+SOF/VEL 12 Weeks (GS-US-338-1121)
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 0/34 (0%) 0/36 (0%) 2/33 (6.1%) 0/31 (0%) 0/31 (0%) 0/32 (0%) 0/8 (0%)
    Cardiac disorders
    Atrial flutter 0/34 (0%) 0/36 (0%) 1/33 (3%) 0/31 (0%) 0/31 (0%) 0/32 (0%) 0/8 (0%)
    Ear and labyrinth disorders
    Vertigo 0/34 (0%) 0/36 (0%) 1/33 (3%) 0/31 (0%) 0/31 (0%) 0/32 (0%) 0/8 (0%)
    Other (Not Including Serious) Adverse Events
    VOX+SOF/VEL 6 Weeks, Treatment Naive, Non Cirrhotic VOX+SOF/VEL 8 Weeks, Treatment Naive, Non Cirrhotic VOX+SOF/VEL 8 Weeks, Treatment Naive, Cirrhotic VOX+SOF/VEL+RBV 8 Weeks, Treatment Naive, Cirrhotic VOX+SOF/VEL 12 Weeks, DAA-Experienced, Non Cirrhotic VOX+SOF/VEL 12 Weeks, DAA-Experienced, Cirrhotic VOX+SOF/VEL 12 Weeks (GS-US-338-1121)
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 21/34 (61.8%) 20/36 (55.6%) 18/33 (54.5%) 24/31 (77.4%) 15/31 (48.4%) 16/32 (50%) 6/8 (75%)
    Blood and lymphatic system disorders
    Anaemia 0/34 (0%) 0/36 (0%) 0/33 (0%) 7/31 (22.6%) 0/31 (0%) 0/32 (0%) 0/8 (0%)
    Gastrointestinal disorders
    Abdominal pain upper 0/34 (0%) 2/36 (5.6%) 2/33 (6.1%) 0/31 (0%) 0/31 (0%) 0/32 (0%) 0/8 (0%)
    Constipation 0/34 (0%) 4/36 (11.1%) 3/33 (9.1%) 1/31 (3.2%) 0/31 (0%) 0/32 (0%) 0/8 (0%)
    Diarrhoea 4/34 (11.8%) 6/36 (16.7%) 2/33 (6.1%) 3/31 (9.7%) 3/31 (9.7%) 3/32 (9.4%) 2/8 (25%)
    Dry mouth 0/34 (0%) 0/36 (0%) 0/33 (0%) 0/31 (0%) 0/31 (0%) 2/32 (6.3%) 0/8 (0%)
    Dyspepsia 1/34 (2.9%) 0/36 (0%) 1/33 (3%) 1/31 (3.2%) 0/31 (0%) 2/32 (6.3%) 0/8 (0%)
    Nausea 2/34 (5.9%) 10/36 (27.8%) 7/33 (21.2%) 9/31 (29%) 3/31 (9.7%) 3/32 (9.4%) 1/8 (12.5%)
    Vomiting 0/34 (0%) 1/36 (2.8%) 2/33 (6.1%) 1/31 (3.2%) 0/31 (0%) 0/32 (0%) 0/8 (0%)
    General disorders
    Fatigue 4/34 (11.8%) 7/36 (19.4%) 1/33 (3%) 10/31 (32.3%) 7/31 (22.6%) 3/32 (9.4%) 2/8 (25%)
    Malaise 2/34 (5.9%) 0/36 (0%) 0/33 (0%) 0/31 (0%) 0/31 (0%) 0/32 (0%) 0/8 (0%)
    Oedema peripheral 0/34 (0%) 0/36 (0%) 2/33 (6.1%) 0/31 (0%) 0/31 (0%) 0/32 (0%) 0/8 (0%)
    Infections and infestations
    Gastroenteritis 0/34 (0%) 2/36 (5.6%) 0/33 (0%) 0/31 (0%) 0/31 (0%) 0/32 (0%) 0/8 (0%)
    Nasopharyngitis 1/34 (2.9%) 3/36 (8.3%) 1/33 (3%) 0/31 (0%) 2/31 (6.5%) 0/32 (0%) 0/8 (0%)
    Pneumonia 0/34 (0%) 0/36 (0%) 0/33 (0%) 1/31 (3.2%) 0/31 (0%) 0/32 (0%) 1/8 (12.5%)
    Upper respiratory tract infection 1/34 (2.9%) 1/36 (2.8%) 0/33 (0%) 2/31 (6.5%) 1/31 (3.2%) 0/32 (0%) 1/8 (12.5%)
    Musculoskeletal and connective tissue disorders
    Arthralgia 2/34 (5.9%) 0/36 (0%) 2/33 (6.1%) 0/31 (0%) 0/31 (0%) 1/32 (3.1%) 0/8 (0%)
    Arthritis 0/34 (0%) 0/36 (0%) 0/33 (0%) 0/31 (0%) 0/31 (0%) 2/32 (6.3%) 0/8 (0%)
    Muscle spasms 2/34 (5.9%) 0/36 (0%) 0/33 (0%) 1/31 (3.2%) 0/31 (0%) 0/32 (0%) 0/8 (0%)
    Musculoskeletal chest pain 0/34 (0%) 0/36 (0%) 2/33 (6.1%) 1/31 (3.2%) 0/31 (0%) 0/32 (0%) 0/8 (0%)
    Nervous system disorders
    Dizziness 2/34 (5.9%) 2/36 (5.6%) 1/33 (3%) 1/31 (3.2%) 0/31 (0%) 0/32 (0%) 0/8 (0%)
    Dysgeusia 2/34 (5.9%) 0/36 (0%) 0/33 (0%) 0/31 (0%) 0/31 (0%) 0/32 (0%) 0/8 (0%)
    Headache 11/34 (32.4%) 7/36 (19.4%) 7/33 (21.2%) 9/31 (29%) 4/31 (12.9%) 5/32 (15.6%) 1/8 (12.5%)
    Paraesthesia 2/34 (5.9%) 0/36 (0%) 0/33 (0%) 0/31 (0%) 0/31 (0%) 0/32 (0%) 0/8 (0%)
    Sciatica 0/34 (0%) 0/36 (0%) 0/33 (0%) 0/31 (0%) 0/31 (0%) 0/32 (0%) 1/8 (12.5%)
    Sinus headache 0/34 (0%) 2/36 (5.6%) 0/33 (0%) 0/31 (0%) 0/31 (0%) 0/32 (0%) 0/8 (0%)
    Psychiatric disorders
    Anxiety 2/34 (5.9%) 0/36 (0%) 1/33 (3%) 0/31 (0%) 0/31 (0%) 0/32 (0%) 0/8 (0%)
    Depression 0/34 (0%) 0/36 (0%) 0/33 (0%) 0/31 (0%) 0/31 (0%) 2/32 (6.3%) 0/8 (0%)
    Insomnia 5/34 (14.7%) 1/36 (2.8%) 0/33 (0%) 3/31 (9.7%) 2/31 (6.5%) 0/32 (0%) 2/8 (25%)
    Respiratory, thoracic and mediastinal disorders
    Cough 1/34 (2.9%) 3/36 (8.3%) 0/33 (0%) 0/31 (0%) 1/31 (3.2%) 1/32 (3.1%) 0/8 (0%)
    Skin and subcutaneous tissue disorders
    Rash 0/34 (0%) 0/36 (0%) 0/33 (0%) 2/31 (6.5%) 0/31 (0%) 0/32 (0%) 0/8 (0%)
    Vascular disorders
    Hypertension 0/34 (0%) 0/36 (0%) 0/33 (0%) 2/31 (6.5%) 1/31 (3.2%) 1/32 (3.1%) 0/8 (0%)

    Limitations/Caveats

    [Not Specified]

    More Information

    Certain Agreements

    Principal Investigators are NOT employed by the organization sponsoring the study.

    After conclusion of the study and without prior written approval from Gilead, investigators in this study may communicate, orally present, or publish in scientific journals or other media only after the following conditions have been met: The results of the study in their entirety have been publicly disclosed by or with the consent of Gilead in an abstract, manuscript, or presentation form; or The study has been completed at all study sites for at least 2 years

    Results Point of Contact

    Name/Title Clinical Trial Disclosures
    Organization Gilead Sciences
    Phone
    Email ClinicalTrialDisclosures@gilead.com
    Responsible Party:
    Gilead Sciences
    ClinicalTrials.gov Identifier:
    NCT02378935
    Other Study ID Numbers:
    • GS-US-367-1168
    First Posted:
    Mar 4, 2015
    Last Update Posted:
    Mar 6, 2020
    Last Verified:
    Nov 1, 2017