CClinicalTrials.gg
CompletedNCT01316237Updated Mar 26, 2012

A Study Evaluating the Safety, Tolerability, Pharmacokinetics and Antiviral Activity of GS-6620 in Treatment Naïve Subjects With Chronic Hepatitis C Virus Infection

A Phase 1 interventional study of GS-6620 and GS-6620 in Hepatitis C, Chronic, sponsored by Gilead Sciences. Completed at 13 sites in 2 countries. Open to participants aged 18 Years to 60 Years. Per ClinicalTrials.gov, last updated 2012-03-26.

Sponsored by Gilead Sciences · Phase 1 and Interventional

Phase
Phase 1
Study type
Interventional
Enrollment
90
Ages
18 Years to 60 Years
Sex
All
01

Study summary

A Double-Blind, Randomized, Placebo-Controlled, Multiple Dose Ranging Study Evaluating the Safety, Tolerability, Pharmacokinetics and Antiviral Activity of GS-6620 in Treatment Naïve Subjects with Chronic Hepatitis C Virus Infection.

02

Conditions studied

  • Hepatitis C, Chronic

Keywords

  • Hepatitis C
  • HCV
  • HCV RNA
  • Polymerase inhibitor
  • Treatment naïve
  • GS-6620
03

In context

Hepatitis A

2,710 studies on the registry are indexed under Hepatitis A; 142 are open to participants now.

This study's planned enrollment of 90 is close to the median of 100 across 1,887 interventional studies indexed under Hepatitis A.

Browse Hepatitis A studies →

Lead sponsor

Gilead Sciences is the lead sponsor of 680 studies on the registry; 24 are open to participants now.

Of its 259 completed or terminated interventional studies of FDA-regulated products, 249 (96%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 60 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Adult subjects (18-60 years of age or up to 64 years of age with approval)
  • Documented chronic HCV infection to be of at least 6 months duration and plasma HCV RNA ≥ 5 log10 IU/mL at screening.
  • HCV treatment naïve
  • Estimated creatinine clearance ≥ 80 mL/min,
  • QTcF interval ≤ 450 msec, QRS duration \< 100 msec, PR interval \< 220 msec,
  • Body mass index (BMI) of 19.0 to 34.0 kg/m2, inclusive.
  • Eligible subjects must also be HCV treatment-naïve.

Exclusion criteria

Exclusion Criteria:

  • Subjects with prior documentation of cirrhosis, excessive current alcohol intake, any evidence of hepatocellular carcinoma (i.e., α-fetoprotein > 50 ng/mL or by any other standard of care measure)
  • Urine drug screen positive for illicit/illegal drugs
  • ALT and AST levels > 5 times the upper limit of the normal range (ULN)
  • Direct bilirubin > ULN, clinical or other laboratory evidence of hepatic decompensation (i.e., platelets \< 100,000/mm3, prothrombin time ≥ 1.5 × ULN and albumin \< 3.5 g/dL) are not eligible for study participation.
  • Subjects with an absolute neutrophil count (ANC) \< 1,000 cells/mm3 (\< 750 cells/mm3 for black or African-American subjects), hemoglobin (Hb) \< 11 g/dL,
  • Coinfected with hepatitis B virus (HBV), human immunodeficiency virus (HIV), or another HCV genotype (other than type 1 for Cohorts 1-5 and type 2 or 3 for Cohort 6) are not eligible for study participation.
  • Evidence of hepatocellular carcinoma
  • Any sign of decompensated liver disease, including prothrombin time ≥ 1.5 X ULN, platelets \< 100,000/mm3 or albumin \< 3.5 g/dL at screening OR current or prior history of clinical hepatic decompensation (e.g., ascites, jaundice, encephalopathy or variceal hemorrhage)
  • History of clinically-significant illness or any other major medical disorder that may interfere with subject treatment, assessment or compliance with the protocol
  • History of a primary gastrointestinal disorder that could interfere with the absorption of the study drug or that could interfere with normal gastrointestinal anatomy or motility
05

Study design

Phase
Phase 1
Enrollment
90 participants (estimated)

Study arms

  • Other
    Cohort 1

    (N = 10, genotype 1): (Active drug: 8, Matching Placebo: 2) 50 mg GS-6620 or placebo QD in the morning with food \[total daily dose (TDD) = 50 mg\] for 5 days

    Drug: GS-6620

  • Other
    Cohort 2

    (N = 10, genotype 1): (Active drug: 8, Matching Placebo: 2) 100 mg GS-6620 or placebo QD in the morning with food (TDD = 100 mg) for 5 days

    Drug: GS-6620

  • Other
    Cohort 3

    Cohort 3 (N = 10, genotype 1): (Active drug: 8, Matching Placebo: 2) 300 mg GS 6620 or placebo QD in the morning with food (TDD = 300 mg) for 5 days

    Drug: GS-6620

  • Other
    Cohort 4

    Cohort 4 (N = 10, genotype 1): (Active drug: 8, Matching Placebo: 2) 100 mg GS 6620 or placebo QD in the morning without food (TDD = 100 mg) for 5 days

    Drug: GS-6620

  • Other
    Cohort 5

    Cohort 5 (N = 10, genotype 1): (Active drug: 8, Matching Placebo: 2) 300 mg GS 6620 or placebo QD in the morning without food (TDD = 300 mg) for 5 days

    Drug: GS-6620

  • Other
    Cohort 6

    Cohort 6 (N = 10, genotype 2 or genotype 3): (Active drug: 8, Matching Placebo: 2) 900 mg GS 6620 or placebo QD in the morning without food (TDD = 900 mg) for 5 days

    Drug: GS-6620

  • Other
    Cohort 7

    Cohort 7 (N = 10, genotype 1): (Active drug: 8, Matching Placebo: 2) 450 mg GS 6620 or placebo, administered BID with food (TDD = 900 mg) for 5 days

    Drug: GS-6620 tablet, 450 mg BID

  • Other
    Cohort 9

    Cohort 9 (N = 10, genotype 1): (Active drug: 8, Matching Placebo: 2) 900 mg GS 6620 or placebo BID in the with food (TDD = 1800 mg) for 5 days

    Drug: GS-6620 tablet

  • Other
    Cohort 11

    Cohort 11 (N = 10, genotype 1 : (Active drug: 8, Matching Placebo: 2) Up to 450 mg GS-6620 or placebo as an oral solution, BID, 12 hours apart in the fasted state, 2 hours after a meal (up to TDD = up to 900 mg) for 5 days.

    Drug: GS-6620 tablet

Interventions

  • DrugGS-6620

    GS-6620 tablet, 50 mg QD

  • DrugGS-6620

    GS-6620 tablet, 100 mg QD

  • DrugGS-6620

    GS-6620 tablet, 300 mg QD

  • DrugGS-6620

    GS-6620 tablet, 100 mg QD, Fasted

  • DrugGS-6620

    GS-6620 tablet, 300 mg QD, Fasted

  • DrugGS-6620

    GS-6620 tablet, 900 mg QD, Fasted

  • DrugGS-6620 tablet, 450 mg BID

    GS-6620 tablet, 450 mg BID

  • DrugGS-6620 tablet

    GS-6620 tablet, 900mg , BID

  • DrugGS-6620 tablet

    GS-6620 tablet, 900 mg

06

What researchers measure

Primary outcomes

  1. Number of subjects with adverse events as a measure of safety and tolerability.

  2. Number of subjects with HCV RNA viral response as a measure of antiviral activity.

Secondary outcomes

  1. Concentrations and pharmacokinetic parameters of GS-6620 and its metabolites will be measured.

07

Study locations

13 sites
  • Advanced Clinical Research Institute
    Anaheim, California 92801, United States
  • Axis Clinical Trials
    Los Angeles, California 90057, United States
  • Avail Clinical Research, LLC
    Deland, Florida 32720, United States
  • University of Florida - Gainesville
    Gainesville, Florida 32608, United States
  • Orlando Immunology Center
    Orlando, Florida 32803, United States
  • Orlando Clinical Research Center
    Orlando, Florida 32809, United States
  • Saint Louis University
    St. Louis, Missouri 63104, United States
  • CRI Worldwide
    Philadelphia, Pennsylvania 19139, United States
  • St. Luke Episcopal Hospital
    Houston, Texas 77030, United States
  • Alamo Medical Research
    San Antonio, Texas 78215, United States
  • Lifetree Clinical Research, LC
    Salt Lake City, Utah 84106, United States
  • Charles River Clinical Services Northwest
    Tacoma, Washington 98418, United States
  • Fundacion De Investigacion De Diego
    Puerto Rico, 00927, Puerto Rico
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Mar 26, 2012, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT01316237
Lead sponsor
Gilead Sciences
Responsible party
Sponsor
First posted
Mar 16, 2011
Start date
Jan 2011
Primary completion
Oct 2011
Completion
Jan 2012
Last update
Mar 26, 2012

Study contacts

Stephen Rossi, PharmD
study director · Gilead Sciences
View the source record on ClinicalTrials.gov ↗

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