A Study Evaluating GS-9620 in Virologically Suppressed Subjects With Chronic Hepatitis B Virus Infection

NCT ID: NCT01590654

Last Updated: 2013-12-20

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

PHASE1

Total Enrollment

51 participants

Study Classification

INTERVENTIONAL

Study Start Date

2012-04-30

Study Completion Date

2013-12-31

Brief Summary

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Dose cohorts may be dosed with one of up to 4 possible total weekly doses (0.3 mg, 1 mg, 2 mg, 4 mg). Dose escalation or repetition will be governed by pre-specified safety and activity rules. Subjects will be confined on days 1-3 and/or days 8-10. Follow-up visits are required periodically through day 43. Subjects with sustained reductions in HbsAg will be requested to return for additional follow-up follow-up visits at 3 and 6 months post last dose. Study procedures involve blood draws for pharmacokinetic, pharmacodynamic, virologic, and safety assessments

Detailed Description

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Conditions

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Hepatitis B

Keywords

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Hepatitis Hepatitis B Hepatitis B Virus HBV GS-9620 Toll-like receptor (TLR)-7 Agonist

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

TRIPLE

Participants Caregivers Investigators

Study Groups

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0.3mg GS-9620

Group Type EXPERIMENTAL

Single Ascending Dose (SAD) Cohorts GS-9620

Intervention Type DRUG

This study will enroll cohorts of 6 eligible, unique subjects per cohort, randomized to either active drug or placebo (5:1) within each cohort. Subjects in Single Ascending Dose (SAD) Cohorts will receive a single dose of GS-9620.

1mg GS-9620

Group Type EXPERIMENTAL

Single Ascending Dose (SAD) Cohorts GS-9620

Intervention Type DRUG

This study will enroll cohorts of 6 eligible, unique subjects per cohort, randomized to either active drug or placebo (5:1) within each cohort. Subjects in Single Ascending Dose (SAD) Cohorts will receive a single dose of GS-9620.

2mg GS-9620

Group Type EXPERIMENTAL

Single Ascending Dose (SAD) Cohorts GS-9620

Intervention Type DRUG

This study will enroll cohorts of 6 eligible, unique subjects per cohort, randomized to either active drug or placebo (5:1) within each cohort. Subjects in Single Ascending Dose (SAD) Cohorts will receive a single dose of GS-9620.

4mg GS-9620

Group Type EXPERIMENTAL

Single Ascending Dose (SAD) Cohorts GS-9620

Intervention Type DRUG

This study will enroll cohorts of 6 eligible, unique subjects per cohort, randomized to either active drug or placebo (5:1) within each cohort. Subjects in Single Ascending Dose (SAD) Cohorts will receive a single dose of GS-9620.

0.3mg GS-9620 QW x 2 doses

Group Type EXPERIMENTAL

Multiple Ascending Dose (MAD) Cohorts GS-9620

Intervention Type DRUG

This study will enroll cohorts of 6 eligible, unique subjects per cohort, randomized to either active drug or placebo (5:1) within each cohort. Subjects in Multiple Ascending Dose (MAD) Cohorts will receive GS-9620 once weekly for two weeks (QW x 2 doses).

1mg GS-9620 QW x 2 doses

Group Type EXPERIMENTAL

Multiple Ascending Dose (MAD) Cohorts GS-9620

Intervention Type DRUG

This study will enroll cohorts of 6 eligible, unique subjects per cohort, randomized to either active drug or placebo (5:1) within each cohort. Subjects in Multiple Ascending Dose (MAD) Cohorts will receive GS-9620 once weekly for two weeks (QW x 2 doses).

2mg GS-9620 QW x 2 doses

Group Type EXPERIMENTAL

Multiple Ascending Dose (MAD) Cohorts GS-9620

Intervention Type DRUG

This study will enroll cohorts of 6 eligible, unique subjects per cohort, randomized to either active drug or placebo (5:1) within each cohort. Subjects in Multiple Ascending Dose (MAD) Cohorts will receive GS-9620 once weekly for two weeks (QW x 2 doses).

4mg GS-9620 QW x 2 doses

Group Type EXPERIMENTAL

Multiple Ascending Dose (MAD) Cohorts GS-9620

Intervention Type DRUG

This study will enroll cohorts of 6 eligible, unique subjects per cohort, randomized to either active drug or placebo (5:1) within each cohort. Subjects in Multiple Ascending Dose (MAD) Cohorts will receive GS-9620 once weekly for two weeks (QW x 2 doses).

Interventions

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Single Ascending Dose (SAD) Cohorts GS-9620

This study will enroll cohorts of 6 eligible, unique subjects per cohort, randomized to either active drug or placebo (5:1) within each cohort. Subjects in Single Ascending Dose (SAD) Cohorts will receive a single dose of GS-9620.

Intervention Type DRUG

Multiple Ascending Dose (MAD) Cohorts GS-9620

This study will enroll cohorts of 6 eligible, unique subjects per cohort, randomized to either active drug or placebo (5:1) within each cohort. Subjects in Multiple Ascending Dose (MAD) Cohorts will receive GS-9620 once weekly for two weeks (QW x 2 doses).

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* Chronic HBV infection for ≥ 6 months
* Currently on treatment with at least 1 HBV approved oral drug (i.e. lamivudine, telbivudine, entecavir, adefovir, tenofovir) ≥ 3 months prior to screening
* HBsAg ≥ 250 IU/mL
* HBV DNA at below the level of quantitation (BLQ; to be confirmed at screening)
* Absence of extensive bridging fibrosis (Metavir 3 or greater)or cirrhosis
* Creatinine clearance ≥ 70 mL/min

Exclusion Criteria

* Co-infection with hepatitis C virus (HCV), hepatitis D virus (HDV), or HIV
* History of Gilberts disease
* Laboratory parameters not within defined thresholds for leukopenia, neutropenia, anemia, thrombocytopenia, thyroid-stimulating hormone (TSH), or other evidence of hepatic decompensation
* Diagnosis of autoimmune disease, poorly controlled diabetes mellitus, significant psychiatric illness, severe chronic obstructive pulmonary disease (COPD), malignancy, hemoglobinopathy, retinal disease, or patients who are immunosuppressed
* Evidence of hepatocellular carcinoma
Minimum Eligible Age

18 Years

Maximum Eligible Age

65 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Gilead Sciences

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Benedetta Massetto, M.D.

Role: STUDY_DIRECTOR

Gilead Sciences

Locations

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Mayo Clinic Hospital

Phoenix, Arizona, United States

Site Status

Indiana University Medical Center

Indianapolis, Indiana, United States

Site Status

Tulane University Health Sciences Center

New Orleans, Louisiana, United States

Site Status

Beth Israel Deaconess Medical Center

Boston, Massachusetts, United States

Site Status

Henry Ford Health System

Detroit, Michigan, United States

Site Status

Kansas City Gastroenterology and Hepatology

Kansas City, Missouri, United States

Site Status

Weill Cornell Medical College

New York, New York, United States

Site Status

Baylor College of Medicine

Houston, Texas, United States

Site Status

University of Utah

Salt Lake City, Utah, United States

Site Status

Nepean Hospital, Department of ID

Kingswood, New South Wales, Australia

Site Status

Royal Brisbane and Women's Hospital

Herston, Queensland, Australia

Site Status

Monash University, Dept. of Medicine

Clayton, Victoria, Australia

Site Status

Alfred Hospital, Department of Gastroenterology

Melbourne, Victoria, Australia

Site Status

Royal Perth Hospital

Nedlands, Western Australia, Australia

Site Status

University of Calgary, Heritage Medical Research Center

Calgary, Alberta, Canada

Site Status

University of Alberta Hospital

Edmonton, Alberta, Canada

Site Status

Algorithme Pharma, Inc.

Laval, Quebec, Canada

Site Status

Aukland Clinical Studies

Grafton, Aukland, New Zealand

Site Status

Asan Medical Center

Seoul, , South Korea

Site Status

Seoul National University Hospital

Seoul, , South Korea

Site Status

Countries

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United States Australia Canada New Zealand South Korea

Other Identifiers

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GS-US-283-0102

Identifier Type: -

Identifier Source: org_study_id