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Summary

for people ages 18 years and up (full criteria)
at San Francisco, California and other locations
study started
estimated completion:

Description

Summary

The primary objective of this study is to compare the efficacy, safety, and tolerability of tenofovir alafenamide (TAF) versus tenofovir disoproxil fumarate (TDF) in treatment-naive and treatment-experienced adults with hepatitis B e antigen (HBeAg)-negative chronic hepatitis B virus (HBV) infection.

Official Title

A Phase 3, Randomized, Double-Blind Study to Evaluate the Safety and Efficacy of Tenofovir Alafenamide (TAF) 25 mg QD Versus Tenofovir Disoproxil Fumarate (TDF) 300 mg QD for the Treatment of HBeAg-Negative, Chronic Hepatitis B

Details

This study GS-US-320-0108 is an international study planned to enroll participants in global countries, including China. However, due to the review timeline difference in China, full enrollment was reached in the main study before China was able to participate. Therefore, details for the China cohorts were registered separately (NCT02836236) on ClinicalTrials.gov as these cohorts will not be part of the main study analysis.

Keywords

HBV Chronic HIV Infection Hepatitis Tenofovir Viread HIV Infections Hepatitis B

Eligibility

For people ages 18 years and up

Key Inclusion Criteria:

  • Ability to understand and sign a written informed consent form, which must be obtained prior to initiation of study procedures
  • Adult males and non-pregnant, non-lactating females
  • Documented evidence of chronic HBV infection
  • Hepatitis e antigen (HBeAg)-negative, chronic hepatitis B with all of the following:
  • HBeAg-negative and hepatitis B e antibody (HBeAb) positive at screening
  • Screening HBV DNA ≥ 2 x 104 IU/mL

  • Screening serum alanine aminotransferase (ALT) level > 60 U/L (males) or > 38 U/L(females) and ≤ 10 x the upper limit of the normal range (ULN)
  • Treatment-naive participants (defined as < 12 weeks of oral antiviral treatment with any nucleoside or nucleotide analogue), OR treatment-experienced participants (defined as participants meeting all entry criteria [including HBV DNA and serum ALT criteria]and with ≥ 12 weeks of previous treatment with any nucleoside or nucleotide analogue)
  • Previous treatment with interferon (pegylated or non pegylated) must have ended at least 6 months prior to the baseline visit.
  • Adequate renal function
  • Normal ECG

Key Exclusion Criteria:

  • Females who are breastfeeding
  • Males and females of reproductive potential who are unwilling to use an "effective",protocol-specified method(s) of contraception during the study
  • Co-infection with hepatitis C virus, HIV, or hepatitis D virus
  • Evidence of hepatocellular carcinoma
  • Any history of, or current evidence of, clinical hepatic decompensation
  • Abnormal hematological and biochemical parameters, including aspartate aminotransferase (AST) > 10 x ULN
  • Received solid organ or bone marrow transplant
  • History of malignancy within the past 5 years, with the exception of specific cancers that are cured by surgical resection; individuals under evaluation for possible malignancy are not eligible
  • Currently receiving therapy with immunomodulators (eg, corticosteroids),investigational agents, nephrotoxic agents, or agents capable of modifying renal excretion
  • Individuals receiving ongoing therapy with drugs not to be used with tenofovir alafenamide or tenofovir disoproxil fumarate or individuals with a known hypersensitivity to study drugs, metabolites, or formulation excipients
  • Current alcohol or substance abuse judged by the investigator to potentially interfere with participant compliance
  • Any other clinical condition or prior therapy that, in the opinion of the Investigator, would make the participant unsuitable for the study or unable to comply with dosing requirements

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

Locations

  • University California San Francisco (UCSF)
    San Francisco, California, 94110, United States
  • Stanford University Medical Center
    Palo Alto, California, 94304, United States
  • Silicon Valley Research Institute
    San Jose, California, 95128, United States
  • Huntington Medical Research Institutes
    Pasadena, California, 91105, United States
  • Asian Pacific Liver Center
    Los Angeles, California, 90057, United States

Details

Status
in progress, not accepting new patients
Start Date
Completion Date
(estimated)
Sponsor
Gilead Sciences
ID
NCT01940341
Phase
Phase 3
Lead Scientist
Mandana Khalili
Study Type
Interventional
Last Updated
September 13, 2017