Safety and Efficacy Study of LB80380 in the Patients With Lamivudine-Refractory Chronic Hepatitis B

May 7, 2009 updated by: LG Life Sciences

A PhaseII, Open-Label, Multinational, Multi-Centre, Sequential Group, Dose-Escalation Study to Assess the Safety and Antiviral Activity of LB80380 for 12 Weeks in Patients With Lamivudine-Refractory Chronic Hepatitis B

The purpose of the study is to investigate the safety and the antiviral activity of ascending multiple oral doses of LB80380 for 12 weeks in adults with lamivudine-refractory chronic hepatitis B infection.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Detailed Description

LB80380, an oral prodrug, is a promising candidate nucleoside analogue with antiviral activity against wild-type HBV. LB80380 is undergoing clinical development by LG Life Sciences for use in the treatment of chronic HBV infection and for treatment of lamivudine-resistant disease.

In this study, the treatment period was divided into two parts: a 4-week treatment period with dose escalation assessment (Part 1), followed by an 8-week extension period (Part 2).

During Part 1, patients received LB80380 and LVD 100 mg once daily for 4 weeks. Each patient was then given only LB80380 for an additional 8 weeks (Part 2) unless dose-limiting toxicity (DLT) was observed during Part 1. At each dose level, all patients were to complete at least Part 1 of the treatment period before enrolment into the next Dose Group could commence. Dose escalation to the next group was not to be initiated if more than two patients experienced DLT during Part 1 in the previous Dose Group. Additionally, patients enrolled in LB80380 150mg and 240mg groups who agreed to participate in the pharmacokinetic (PK) analyses visited the study site the day before Week 12 for blood sampling. Follow-up period was 24 weeks, and patients were treated with adefovir dipivoxil during the follow-up period. During the study, patients were evaluated for changes from baseline in serum HBV DNA. Safety was evaluated on the basis of occurrence of AEs and changes from baseline in clinical laboratory parameters, physical examination findings, and vital signs.

Study Type

Interventional

Enrollment (Actual)

65

Phase

  • Phase 2
  • Phase 1

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
        • Queen Mary Hospital
  • Korea, Republic of
      • Seoul, Korea, Republic of
        • Korea University Medical Center
      • Seoul, Korea, Republic of
        • Severance Hospital of Yonsei University
      • Seoul, Korea, Republic of
        • The Catholic University of Korea, Kangnam St. Mary's Hospital

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 65 years (Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Compensated chronic hepatitis B patient
  • Presence of serum HBsAg for more than 6 months.
  • Presence of HBeAg for more than 1 month with compensated liver disease
  • Confirmation of YMDD mutants (M552V, M552I and its related double mutant at L528M) by genotyping of the YMDD motif using line probe assay (INNO-LiPA HBV DR assay)
  • Screening HBV DNA value higher than or equal to 1,000,000 copies/mL (measured by the COBAS Amplicor HBV Monitor™ assay)
  • Screening ALT value between 1.5 and 10 x ULN

Exclusion Criteria:

  • Co-infection with hepatitis C or D virus (HCV or HDV) or HIV
  • Pregnancy or breast-feeding
  • Previous treatment with nucleoside analogue or any other treatment for HBV except for lamivudine within 6 months prior to study entry
  • Treatment with immunomodulatory agent or corticosteroids within 6 months prior to study entry.
  • De-compensated liver disease
  • Screening alpha-fetoprotein (AFP) value > 20 ng/mL, and a follow-up ultrasonography performed prior to baseline shows findings indicative of HCC.
  • Presence of anti-HBs at screening

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: Non-Randomized
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: LB80380 30mg
Drug: LB80380
Total treatment period: 12 weeks, followed by 24 weeks of treatment with adefovir dipivoxil 10mg
Experimental: LB80380 60mg
Drug: LB80380
Total treatment period: 12 weeks, followed by 24 weeks of treatment with adefovir dipivoxil 10mg
Experimental: LB80380 90mg,
LB80380 90mg
Drug: LB80380
Total treatment period: 12 weeks, followed by 24 weeks of treatment with adefovir dipivoxil 10mg
Experimental: LB80380 150mg
Drug: LB80380
Total treatment period: 12 weeks, followed by 24 weeks of treatment with adefovir dipivoxil 10mg
Experimental: LB80380 240mg
Drug: LB80380
Total treatment period: 12 weeks, followed by 24 weeks of treatment with adefovir dipivoxil 10mg

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Mean serum HBV DNA level (log10) reduction from the baseline at Week 12
Time Frame: Week 12
Week 12

Secondary Outcome Measures

Outcome Measure
Time Frame
Proportion of patients with HBeAg seroconversion at 12 weeks Proportion of patients with HBsAg seroconversion at 12 weeks Proportion of patients with ALT normalization at 12 weeks Safety assessment during the whole study period
Time Frame: Week 12
Week 12

Collaborators and Investigators

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

Sponsor

LG Life Sciences

Investigators

  • Principal Investigator: Ching-Lung Lai, Dr, Queen Mary Hospital, Hong Kong

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

March 1, 2004

Primary Completion (Actual)

August 1, 2006

Study Completion (Actual)

December 1, 2007

Study Registration Dates

First Submitted

May 7, 2009

First Submitted That Met QC Criteria

May 7, 2009

First Posted (Estimate)

May 8, 2009

Study Record Updates

Last Update Posted (Estimate)

May 8, 2009

Last Update Submitted That Met QC Criteria

May 7, 2009

Last Verified

May 1, 2009

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • BVCL004

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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