Utilization and Efficacy of Tenofovir DF in Adolescents With Chronic Hepatitis B Virus Infection

February 21, 2019 updated by: Gilead Sciences

Pharmacoepidemiology Study to Define the Long-term Safety Profile of Tenofovir Disoproxil Fumarate (Tenofovir DF, Viread®) and Describe the Management of Tenofovir DF-associated Renal and Bone Toxicity in Chronic Hepatitis B (CHB)-Infected Adolescents Aged 12 to <18 Years in Europe

The primary objective of this study is to characterize the long term (ie, 96 weeks of follow up) bone safety profile of open-label tenofovir disoproxil fumarate (tenofovir DF) treatment in CHB-infected adolescents. This includes prospectively evaluating and comparing the bone mineral density (BMD) change between CHB-infected adolescents 12 to < 18 years of age treated with tenofovir DF in European treatment centers who are assigned to one of two schedules for renal and bone laboratory monitoring and BMD measurement.

Study Overview

Status

Status

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

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.

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.
30

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 4

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

  • Belgium
      • Brussels, Belgium, 1200
        • Cliniques Universitaries Saint- Luc, Departem Pediatrie
  • France
      • Bron, France, 69677
        • Hopital Femmes Meres Enfants
  • Greece
      • Chaidari, Greece, 12462
        • Attikon General Hospital of Athens
  • Italy
      • Bologna, Italy, 40138
        • Azienda Ospedaliero-Universitaria di Bologna
  • Romania
      • Bucharest, Romania, 11743
        • Grigore Alexandrescu Childrens Emergency Clinical Hospital
      • Constanta, Romania, 900708
        • Spitatul Clinic de Boli Infectioase Constanta
      • Iaşi, Romania, 700111
        • Institutul de Gastrenterologie si Hepatologie Iasi
  • Spain
      • Barcelona, Spain, 8950
        • Hospital Sant Joan de Déu
      • Vigo, Spain, 36200
        • Hospital de Meixoeiro
    • Barcelona
      • Badalona, Barcelona, Spain, 08916
        • Hospital Universitari Germans Trias i Pujol
  • United Kingdom
      • Birmingham, United Kingdom, B4 6NH
        • Birmingham Children's Hospital NHS Trust

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

12 years to 15 years (Child)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Key Inclusion Criteria:

  1. 12 to <16 years of age
  2. Documented chronic hepatitis B virus (HBV) infection
  3. Weight ≥ 35 kg
  4. Able to swallow oral tablets
  5. Negative pregnancy test for females of childbearing potential
  6. Adequate kidney (renal) function
  7. Parent or legal guardian of potential study subjects able to provide written informed consent

Key Exclusion Criteria:

  1. Previously received tenofovir DF
  2. Sexually-active males or females of reproductive potential who are not willing to use an effective method of contraception during the study
  3. Females who are pregnant or breastfeeding, or females who wish to become pregnant during the course of the study
  4. Known hypersensitivity to tenofovir DF, the metabolites or formulation excipients
  5. Any condition (including alcohol or substance abuse) or prior therapy that, in the opinion of the Investigator, would make the subject unsuitable for the study or unable to comply with treatment 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: Other
  • Allocation: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: None (Open Label)

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.
Other: Tenofovir DF + increased bone/renal monitoring
Participants will receive tenofovir DF, plus laboratory bone biomarker testing and lumbar spine and whole-body DEXA scans every 24 weeks from baseline to Week 96 (5 scans), and monitoring of renal function at 4 and 12 weeks after baseline and every 12 weeks thereafter. With the exception of an enhanced monitoring protocol for bone and renal outcomes, participants will be managed according to local standards of care.
Drug: Tenofovir DF
300 mg tablet administered orally once daily for up to 96 weeks
Other Names:
  • Viread®
Radiation: DEXA Scan
Dual energy x-ray absorptiometry (DEXA) scans administered at protocol-specified time points
Other: Tenofovir DF + prespecified bone monitoring
Participants will receive tenofovir DF, plus laboratory bone biomarker testing and lumbar spine and whole-body DEXA scans at baseline, Week 48, and Week 96. With the exception of pre-specified bone monitoring, participants will be managed according to local standards of care.
Drug: Tenofovir DF
300 mg tablet administered orally once daily for up to 96 weeks
Other Names:
  • Viread®
Radiation: DEXA Scan
Dual energy x-ray absorptiometry (DEXA) scans administered at protocol-specified time points

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 Bone-Related Adverse Events and/or a ≥ 4% Reduction in Bone Mineral Density (BMD) From Baseline to Week 96
Time Frame: Baseline to Week 96
Baseline to Week 96

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

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.
July 3, 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.
February 28, 2018

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.
April 11, 2018

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).
June 17, 2015

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.
June 23, 2015

First Posted (Estimate)

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.
June 24, 2015

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.
May 20, 2019

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.
February 21, 2019

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.
February 1, 2019

More Information

Terms related to this study

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-EU-174-1403
  • 2014-004939-39 (EudraCT Number)

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

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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