Lamivudine Therapy in Patients With Prior Entecavir Treatment and Undetectable Viral Load

November 30, 2015 updated by: James Yan Yue Fung, The University of Hong Kong
Patients with chronic hepatitis B and treated with entecavir for over 6 months (with no previous other antiviral treatment) will be invited to participate in this study. They will be eligible if their liver tests are normal and their viral load is undetectable. Patients will be switched to lamivudine treatment to assess whether lamivudine can maintain adequate suppression of the hepatitis B virus after successful treatment with entecavir. Patients will be monitored closely after switching treatment at 1 months and then every 3 monthly. If there is any evidence of increase in viral load then patients will be given the option of changing back to entecavir.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

50

Phase

  • Not Applicable

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
      • Hong Kong, China
        • The University of Hong Kong

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

Ages Eligible for Study

18 years to 70 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Patients with chronic hepatitis B treated with entecavir for 6 months or more
  • Normal ALT
  • Undetectable HBV DNA by Roche Taqman PCR Assay
  • No other previous therapy with nucleoside/nucleotide analogues

Exclusion Criteria:

  • Presence of other liver diseases including hepatitis C co-infection, autoimmune hepatitis , primary biliary cirrhosis, primary sclerosing cholangitis, alcoholic liver disease, and Wilson's disease
  • History of hepatocellular carcinoma
  • History of decompensated liver disease

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: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Active Comparator: Entecavir
Ongoing entecavir 0.5mg daily
Drug: Entecavir
Entecavir 0.5mg orally daily
Other Names:
  • Baraclude
Active Comparator: Lamivudine
Switch to lamivudine 100mg daily
Drug: Lamivudine
Lamivudine 100mg orally, daily
Other Names:
  • Zeffix

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Determine the efficacy of lamivudine therapy in patients with prior entecavir treatment with undetectable viral load
Time Frame: 96 weeks
96 weeks

Secondary Outcome Measures

Outcome Measure
Time Frame
Determine the chance of lamivudine resistance in patients with prior entecavir treatment with undetectable viral load
Time Frame: 96 weeks
96 weeks

Collaborators and Investigators

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

Sponsor

The University of Hong Kong

Investigators

  • Principal Investigator: James Fung, MBChB, The University of Hong Kong

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

June 1, 2007

Primary Completion (Actual)

July 1, 2010

Study Completion (Actual)

July 1, 2010

Study Registration Dates

First Submitted

November 12, 2009

First Submitted That Met QC Criteria

November 12, 2009

First Posted (Estimate)

November 13, 2009

Study Record Updates

Last Update Posted (Estimate)

December 2, 2015

Last Update Submitted That Met QC Criteria

November 30, 2015

Last Verified

November 1, 2015

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • HKUHEP-01

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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