Study in Japan of the Safety And Antiviral Activity in Adults With Chronic Hepatitis B Current Lamivudine Therapy

January 24, 2011 updated by: Bristol-Myers Squibb

A Phase II Study in Japan of the Safety And Antiviral Activity of Entecavir (BMS-200475) in Adults With Chronic Hepatitis B With Incomplete Response to Current Lamivudine Therapy

The objectives are to demonstrate that entecavir has antiviral activity undetectable HBV DNA measured, the Roche AmplicorTM PCR at Week 48, and to assess the safety and the pharmacokinetic of entecavir in Japanese patients with hepatitis B who have an incomplete response to current lamivudine therapy

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.

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.
84

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 2

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

  • Japan
      • Kyoto, Japan
        • Local Institution
    • Aichi
      • Aichi-Gun, Aichi, Japan, 480-1195
        • Local Institution
      • Nagoya, Aichi, Japan, 466-8550
        • Local Institution
      • Nagoya-Shi, Aichi, Japan, 467-8602
        • Local Institution
    • Chiba
      • Chiba-Shi, Chiba, Japan
        • Local Institution
    • Fukuoka
      • Kurume, Fukuoka, Japan
        • Local Institution
    • Gifu
      • Ogaki-Shi, Gifu, Japan, 503-8502
        • Local Institution
    • Hokkaido
      • Asahikawa-Shi, Hokkaido, Japan, 070-0054
        • Local Institution
      • Sapporo-Shi, Hokkaido, Japan, 060-0033
        • Local Institution
    • Hyogo
      • Akashi-Shi, Hyogo, Japan, 673-0848
        • Local Institution
    • Iwate
      • Morioka-Shi, Iwate, Japan, 020-8505
        • Local Institution
    • Miyagi
      • Sendai, Miyagi, Japan
        • Local Institution
    • Okayama
      • Okayama-Shi, Okayama, Japan, 700-0082
        • Local Institution
    • Tokyo
      • Minato-Ku, Tokyo, Japan, 105-0001
        • Local Institution
      • Musashino-Shi, Tokyo, Japan, 180-0023
        • Local Institution
      • Shinjuku-Ku, Tokyo, Japan, 162-8666
        • Local Institution

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

20 years to 75 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Documentation of chronic hepatitis B infection by ALL of the following:

    1. Positive for HBsAg OR, negative for IgM core antibody and confirmation of chronic hepatitis B on liver biopsy
    2. Patient who have received lamivudine therapy for 24 weeks or more, or patient who have documented YMDD mutation or other lamivudine-resistant mutation while on lamivudine
    3. Documented HBV Viremia ≥ 10*5: copies/mL
  • ALT in the range of 1.3 to 10 x ULN
  • Subjects must have well-compensated liver disease a) value

Exclusion Criteria:

-

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: Quadruple

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: Entecavir (0.5 mg)
Drug: Entecavir
Tablet, P.O., 0.5 mg or 1mg, once daily, 52 weeks
Other Names:
  • Baraclude
  • BMS-200475
Experimental: Entecavir (1mg)
Drug: Entecavir
Tablet, P.O., 0.5 mg or 1mg, once daily, 52 weeks
Other Names:
  • Baraclude
  • BMS-200475

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
To assess the safety (the incidence of clinical adverse events and discontinuations due to adverse events)
Time Frame: Week 52 (end of dosing) plus 5 days
Week 52 (end of dosing) plus 5 days
To assess the proportion of subjects with reduction in HBV DNA by ≥ 2 log10 or to undetectable level (< 400 copies/mL)
Time Frame: at Week 48
at 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
Proportion of subjects who achieve undetectable HBV DNA (<400 copies/mL) by PCR assay at Week 48
Time Frame: Week 48
Week 48
Proportion of subjects HBeAg-positive at baseline who have loss of HBeAg from serum at Week 48
Time Frame: Week 48
Week 48
Proportion of subjects HBeAg-positive at baseline who achieve seroconversion (loss of HBeAg and appearance of HBeAb) at Week 48
Time Frame: Week 48
Week 48
Proportion of subjects with abnormal ALT at baseline who achieve normalization of serum ALT (<1.25 x ULN) at Week 48
Time Frame: Week 48
Week 48
Proportion of subjects w/ histological improvement in liver (improvement in necroinflammatory score (≥2 points decrease, Knodell HAI3 score) & no worsening of fibrosis (≥1 point increase, Knodell fibrosis score) at Wk 48 liver biopsy compared to baseline
Time Frame: Baseline, Week 48
Baseline, Week 48
Changes in liver histology as assessed by the New Inuyama Classification for histological assessment of chronic hepatitis
Time Frame: Week 52
Week 52
Relationship between HBV isolates (genotypes A,B,C, etc.) at baseline and antiviral activity
Time Frame: Week 48, or at end of dosing (up to Week 52)
Week 48, or at end of dosing (up to Week 52)
Incidence of resistance mutations of HBV isolates in subjects who have a rise in HBV DNA (by ≥1 log above the nadir for that subject) while on study drug.
Time Frame: Week 48, or at end of dosing (up to Week 52)
Week 48, or at end of dosing (up to Week 52)
Mutation of HBV DNA polymerase at Week 48 from baseline
Time Frame: Baseline, Week 48
Baseline, Week 48
Plasma concentrations of entecavir at selected time points during the treatment period
Time Frame: pre-dosing, Week 2 or 4, Week 12, Week 24 and Week 36
pre-dosing, Week 2 or 4, Week 12, Week 24 and Week 36
Population pharmacokinetic assessment of entecavir developed from concentration-time data obtained from healthy subjects
Time Frame: pre-dosing, Week 2 or 4, Week 12, Week 24 and Week 36
pre-dosing, Week 2 or 4, Week 12, Week 24 and Week 36
Mean change from baseline in the log*10* HBV DNA measured by PCR assay for each entecavir dose (0.5 and 1 mg) at Week 48
Time Frame: Baseline, Week 48
Baseline, Week 48
Proportion of subjects HBeAg-positive at baseline who have complete response (undetectable HBV DNA levels by PCR assay, negative for HBeAg and normal serum ALT) at Week 48
Time Frame: Week 48
Week 48
Proportion of subjects HBeAg-negative at baseline who have undetectable HBV DNA levels by PCR assay, remain negative for HBeAg and normal serum ALT at Week 48
Time Frame: Week 48
Week 48

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.
Bristol-Myers Squibb

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

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

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.
December 1, 2002

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 1, 2005

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.
February 1, 2005

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).
December 17, 2009

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.
December 18, 2009

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.
December 21, 2009

Study Record Updates

Last Update Posted (Estimate)

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.
January 31, 2011

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.
January 24, 2011

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.
June 1, 2010

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.
  • AI463-052

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.

Clinical Trials on Chronic Hepatitis B

Clinical Trials on Entecavir

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Cookie Settings

We use cookies to ensure that we give you the best experience on our website. For more details carefully read our Privacy and Cookies Policy. ...>>>You can change your preferences or withdraw your consent at any time by deleting the cookies from your website or computer as described in the policy. Please accept it and choose your preferences by ticking the corresponding boxes in the "Manage Settings" section below. Please carefully read our Terms of Service before you proceed with using any part of this website.
«Manage Settings