Evaluation of the Safety, Tolerability, Pharmacokinetics, and Activity of GS-9450 in Subjects With Chronic HCV

This study has been completed.
Sponsor:
Information provided by (Responsible Party):
Gilead Sciences
ClinicalTrials.gov Identifier:
NCT00725803
First received: July 29, 2008
Last updated: June 11, 2014
Last verified: June 2014
  Purpose

The purpose of this study is to examine the safety, tolerability, pharmacokinetics (studies how the body processes a drug), and initial activity of GS-9450 in preventing liver damage due to scarring, or fibrosis, caused by Hepatitis C Virus (HCV) infection.


Condition Intervention Phase
HCV Infection
Drug: GS-9450
Drug: GS-9450 Placebo
Phase 2

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Double Blind (Subject, Caregiver, Investigator, Outcomes Assessor)
Primary Purpose: Treatment
Official Title: A Phase 2a, Double-Blind, Randomized, Placebo-Controlled, Dose Escalation Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Activity of GS-9450, a Caspase Inhibitor, in Subjects With Chronic Hepatitis C (GS-US-227-0102)

Resource links provided by NLM:


Further study details as provided by Gilead Sciences:

Primary Outcome Measures:
  • Safety and Tolerability [ Time Frame: Throughout 7 weeks (2 weeks on treatment and 5 weeks post-treatment) ] [ Designated as safety issue: Yes ]

Secondary Outcome Measures:
  • Plasma pharmacokinetic parameters of GS-9450 and metabolites [ Time Frame: 17 days (through 72 hours after last dose) ] [ Designated as safety issue: No ]
  • Change from baseline in alanine aminotransferase (ALT) levels at Day 14 [ Time Frame: Day 14 ] [ Designated as safety issue: No ]
  • Change from baseline in noninvasive markers (including cytokeratin 18 fragments) indicative of hepatic apoptosis [ Time Frame: Through Week 5 (2 weeks on treatment and 3 weeks post-treatment) ] [ Designated as safety issue: No ]

Enrollment: 33
Study Start Date: April 2008
Study Completion Date: March 2009
Primary Completion Date: October 2008 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Cohort 1
Subjects randomized 3:1 (active:placebo) to receive GS-9450 10 mg/day or placebo.
Drug: GS-9450
GS-9450 capsules administered orally once daily
Drug: GS-9450 Placebo
Placebo to match GS-9450 administered orally once daily
Experimental: Cohort 2
Subjects randomized 3:1 (active:placebo) to receive GS-9450 40 mg/day or placebo.
Drug: GS-9450
GS-9450 capsules administered orally once daily
Drug: GS-9450 Placebo
Placebo to match GS-9450 administered orally once daily
Experimental: Cohort 3
Subjects randomized 3:1 (active:placebo) to receive GS-9450 80 mg/day or placebo.
Drug: GS-9450
GS-9450 capsules administered orally once daily
Drug: GS-9450 Placebo
Placebo to match GS-9450 administered orally once daily
Experimental: Cohort 4
Subjects randomized 3:1 (active:placebo) to receive GS-9450 5 mg/day or placebo. Cohort may or may not be conducted pending blinded review of previous cohorts.
Drug: GS-9450
GS-9450 capsules administered orally once daily
Drug: GS-9450 Placebo
Placebo to match GS-9450 administered orally once daily

Detailed Description:

Approximately 32 subjects will receive GS 9450 or placebo for 14 consecutive days. Eight subjects will receive treatment within each of four dosing cohorts; 6 randomized to receive GS 9450 and two randomized to placebo:

Cohort 1: GS 9450 10 mg or placebo given daily x 14 days Cohort 2: GS 9450 40 mg or placebo given daily x 14 days Cohort 3: GS 9450 80 mg or placebo given daily x 14 days

If further characterization of the activity profile is deemed necessary, an additional cohort at a lower dose (5 mg) may be enrolled:

Cohort 4: GS 9450 5 mg or placebo given daily x 14 days

Each cohort will be conducted sequentially. Advancement to higher dose cohorts is dependent upon satisfactory safety and tolerability profiles of the preceding cohort as determined by Sponsor review (conducted in consultation with the Lead Investigator[s]). Progression to Cohort 4 (5 mg dose strength) will not require a safety review of Cohort 3 (80 mg dose strength); screening and randomization for Cohort 4 may begin immediately after fully enrolling Cohort 3. Alternatively, if a dose-response relationship is apparent in review of the blinded activity data from the first three cohorts, the final 5 mg cohort may be omitted.

  Eligibility

Ages Eligible for Study:   18 Years to 65 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • Male or female, aged from 18 to 65 years old, inclusive.
  • Willing and able to provide written, informed consent
  • Have a body mass index between 19 and 32 kg/m2, inclusive, at screening.
  • Have chronic hepatitis C infection of any genotype (and subtype).
  • Subjects must be previously treated with pegylated interferon (PEG) or interferon (INF) with or without ribavirin (RBV) and either did not achieve a sustained viral response (undetectable HCV RNA) six months after cessation of anti-viral therapy, or did not tolerate PEG or INF with or without RBV therapy. Subjects who have contraindications to receiving PEG or INF with or without RBV may also be eligible.
  • ALT >/= 1.5 X but < 10 X the upper limit of the normal range (ULN); aspartate aminotransferase (AST) < 10 X ULN; platelets >/= 75,000/mm3; total bilirubin </= 1.5 X ULN; prothrombin time </= 1.5 X ULN; albumin >/= 3.0 g/dL; absolute neutrophil count >/= 1,000 cells/mm3; and hemoglobin >/= 10 g/dL
  • Creatinine clearance >/= 70 mL/min
  • A female of non-childbearing potential who is documented as either surgically sterile or post-menopausal for >/= 2 years.
  • Females < 2 years post-menopausal are required to have follicle-stimulating hormone (FSH) level of >/= 40 mIU/mL. If of child-bearing potential or FSH < 40 mIU/mL, must:

    1. have negative serum pregnancy test and a negative urine pregnancy test, and
    2. agree to use an acceptable method of contraception during heterosexual intercourse during the study and for >/= 30 days or one menstrual cycle (whichever is the longer) after last dose of study drug.
  • If male, agree to use an acceptable method of contraception during heterosexual intercourse during the study and for at least 3 months after the last dose of study drug.
  • Subjects should be in reasonably good health as determined by the Investigator.

Exclusion Criteria:

  • Pregnant or breast feeding women or women who may wish to become pregnant during the study or within 30 days of study drug administration.
  • Males who have partners planning to become pregnant within 30 days of study drug administration.
  • Males and females of reproductive potential who are unwilling to use effective method(s) of birth control for a minimum of 30 days after ingestion of study medication
  • Coinfection with hepatitis B virus (HBV) or HIV
  • Known liver disease of a non-HCV etiology
  • Pancreatitis
  • Autoimmune disease
  • History of malignancy
  • Ongoing alcohol abuse.
  • Recent significant infection or symptoms of infection
  • Evidence of hepatocellular carcinoma (e.g., a-fetoprotein > 50 ng/mL or as indicated by recent ultrasound)
  • Decompensated liver disease OR history of clinical hepatic decompensation
  • Hb < 10 g/dL
  • Absolute neutrophil count (ANC) < 1,000 cells/mm3
  • Therapy with potentially hepatotoxic/cholestatic drugs.
  • Therapy with agents having potential hepatic anti-inflammatory or anti-fibrotic properties.
  • Therapy with proton pump inhibitors or histamine-2 receptor antagonists.
  • Have received therapy with systemic steroids, immunosuppressant therapies or chemotherapeutic agents within 90 days prior to Day 1 or are expected to receive such therapy during the study.
  • With or a history of clinically significant illness or medical disorder that may interfere with treatment, assessment or compliance.
  • Have a 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.
  • Received study medication while participating in another research study within 60 days prior to Day 1.
  • A positive urine drug screen
  • Known hypersensitivity to the study drugs, the metabolites or formulation excipients.
  • Known aspirin allergy.
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT00725803

Locations
United States, California
Anaheim, California, United States
United States, District of Columbia
Washington, District of Columbia, United States
United States, Florida
Orlando, Florida, United States
United States, Texas
Dallas, Texas, United States
San Antonio, Texas, United States
Germany
Frankfurt, Germany
Hamburg, Germany
Hannover, Germany
Mainz, Germany
Wurzburg, Germany
Netherlands
Amsterdam, Netherlands
Sponsors and Collaborators
Gilead Sciences
Investigators
Study Chair: David Oldach, MD Gilead Sciences
  More Information

No publications provided

Responsible Party: Gilead Sciences
ClinicalTrials.gov Identifier: NCT00725803     History of Changes
Other Study ID Numbers: GS-US-227-0102
Study First Received: July 29, 2008
Last Updated: June 11, 2014
Health Authority: United States: Food and Drug Administration
France: Afssaps - Agence française de sécurité sanitaire des produits de santé (Saint-Denis)
Germany: Federal Institute for Drugs and Medical Devices
Netherlands: The Central Committee on Research Involving Human Subjects (CCMO)

Keywords provided by Gilead Sciences:
Hepatitis C
HCV
Fibrosis
Apoptosis
GS-9450

Additional relevant MeSH terms:
Caspase Inhibitors
Cysteine Proteinase Inhibitors
Protease Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Pharmacologic Actions

ClinicalTrials.gov processed this record on August 01, 2014