Tenofovir Alafenamide Versus Tenofovir Disoproxil Fumarate for Treatment of Hepatitis B e Antigen-Positive Hepatitis B (China)

September 24, 2024 updated by: Gilead Sciences

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 Positive, Chronic Hepatitis B

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)-positive chronic hepatitis B virus (HBV) infection in China.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This study GS-US-320-0110 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 (NCT01940471) before China was able to participate. Therefore, this registration only includes the China cohorts as they were not part of the main study analysis. Data for China cohorts were analyzed separately after the main study analysis was completed.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
181

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • China
      • Beijing, China, 100069
        • Beijing Youan Hospital, Capital Medical University
      • Beijing, China, 100050
        • Beijing Friendship Hospital, Capital Medical University
      • Beijing, China, 100015
        • Beijing Ditan Hospital
      • Beijing, China, 100039
        • PLA 302 Hospital
      • Changsha, China, 410008
        • Xianya Hospital, Central South University
      • Guangzhou, China, 510060
        • Guangzhou Eighth People's Hospital
      • Guangzhou, China, 510515
        • Nanfang Medical University, Nanfang Hospital
      • Guangzhou, China, 510630
        • No. 3 Hospital, Zhongshan Medical University
      • Guiyang, China, 550004
        • The affiliated Hospital of Guiyang Medical College
      • Haikou, China, 570311
        • The People's Hospital of Hainan Province
      • Hunan, China, 410011
        • The second Xiangya Hospital of Central South University
      • Jiangxi, China, 330006
        • The First Affiliated Hospital of Nanchang University
      • Jilin, China, 130021
        • 1st Hospital Jilin University
      • Jinan, China, 250021
        • Jinan Infectious Disease Hospital
      • Nanjing, China, 210003
        • 2nd Hospital of Nanjing City
      • Nanjing, China, 210029
        • Jiangsu Province People's Hospital
      • Shanghai, China, 200025
        • Ruijin Hospital, JiaoTong University School of Medicine
      • Shanghai, China, 200083
        • Shanghai Public Health Clinical Center
      • Shanghai, China, 200235
        • 85 Hospital of People's Liberation Army
      • Shenyang, China, 110004
        • Shengjing Hospital of China Medical University
      • Shenyang, China, 110006
        • The Sixth People's Hospital of Shenyang
      • Shijiazhuang, China, 050051
        • 3rd Hospital of Hebei Medical University
      • Sichuan, China, 610041
        • West China Hospital, Sichuan University
      • Xi'an, China, 710061
        • First Affiliated Hospital of Xi'an JiaoTong University
      • Yunnan, China, 650032
        • 1st Affiliated Hospital Kunming Medical College

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

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

  • HBeAg-positive, chronic hepatitis B with all of the following:

    • HBeAg-positive at screening
    • Screening HBV DNA ≥ 2 x 10^4 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.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Double

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Open-label TAF
All participants who complete the double-blind period will be eligible to receive open-label TAF until Week 384 of the study.
Drug: TAF
TAF 25 mg tablet administered orally once daily
Other Names:
  • Vemlidy®
  • GS-7340
Experimental: Double-Blind TAF
Tenofovir alafenamide (Vemlidy®; TAF) 25 mg tablet + tenofovir disoproxil fumarate (Viread®; TDF) placebo tablet once daily for up to 144 weeks (per amendment 3.1).
Drug: TAF
TAF 25 mg tablet administered orally once daily
Other Names:
  • Vemlidy®
  • GS-7340
Drug: TDF Placebo
TDF placebo tablet administered orally once daily
Active Comparator: Double-Blind TDF
TDF 300 mg tablet + TAF placebo tablet once daily for up to 144 weeks (per amendment 3.1).
Drug: TDF
TDF 300 mg tablet administered orally once daily
Other Names:
  • Viread®
Drug: TAF Placebo
TAF placebo tablet administered orally once daily

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Time Frame
Percentage of Participants With Hepatitis B Virus (HBV) DNA < 29 IU/mL at Week 48
Time Frame: Week 48
Week 48

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Time Frame
Percentage of Participants With Hepatitis B e Antigen (HBeAg) Seroconversion to Antibody Against Hepatitis B e Antigen (Anti-HBe) at Week 48
Time Frame: Week 48
Week 48
Percent Change From Baseline in Hip Bone Mineral Density (BMD) at Week 48
Time Frame: Baseline; Week 48
Baseline; Week 48
Percent Change From Baseline in Spine BMD at Week 48
Time Frame: Baseline; Week 48
Baseline; Week 48
Change From Baseline at Week 48 in Serum Creatinine
Time Frame: Baseline; Week 48
Baseline; Week 48

Other Outcome Measures

Other Outcome Measures

For clinical trials, a planned measurement described in the protocol that is used to determine the effect of an intervention/treatment on participants. For observational studies, a measurement or observation that is used to describe patterns of diseases or traits, or associations with exposures, risk factors, or treatment. Types of outcome measures include primary outcome measure and secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Percentage of Participants With Treatment-emergent Proteinuria by Urinalysis (Dipstick) Through Week 48
Time Frame: Up to 48 weeks
Grades 1 (mild), 2 (moderate), and 3 (severe) were the highest treatment-emergent postbaseline grades for urine protein using the dipstick method.
Up to 48 weeks

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Gilead Sciences

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Study Director: Gilead Study Director, Gilead Sciences

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
June 19, 2015

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
March 21, 2017

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
August 31, 2023

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 14, 2016

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 14, 2016

First Posted (Estimated)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 18, 2016

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
October 15, 2024

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 24, 2024

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
September 1, 2024

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • GS-US-320-0110 (China)
  • 2013-000636-10 (EudraCT Number)

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

YES

IPD Plan Description

Qualified external researchers may request IPD for this study after study completion. For more information, please visit our website at https://www.gileadclinicaltrials.com/transparency-policy#Commitment

IPD Sharing Time Frame

18 months after study completion

IPD Sharing Access Criteria

A secured external environment with username, password, and RSA code.

IPD Sharing Supporting Information Type

  • STUDY_PROTOCOL
  • SAP

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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