Phase I Study to Investigate the Safety and Efficacy of HBV DNA Vaccine

August 3, 2012 updated by: Genexine, Inc.

A Single Center, Randomized, Open-label, Dose Escalating Phase I Study to Evaluate the Safety of Intramuscularly Administered DNA Vaccine (HB-110) Combined With Oral Antiviral (Adefovir) in Subjects With Chronic Hepatitis B Over a 48-week Period

This study will evaluate the safety and immunogenicity of a novel mixed plasmid DNA (HB-110) combined with an antiviral agent (Adefovir) for the patients with chronic Hepatitis B infection.

Study Overview

Status

Completed

Conditions

Intervention / Treatment

Study Type

Interventional

Enrollment (Actual)

27

Phase

  • 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

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 60 years (Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Chronic hepatitis B infected patient documented with positive HBsAg for 3 months and more at screening
  • Chronic hepatitis B infected patient with positive HBeAg at screening
  • Patient who has not treated with interferon alpha, lamivudine or adefovir within 3 months before study entry
  • HBV DNA more than 1x10^5 copies/mL through COBAS Amplicor HBV monitor assay or bDNA method at screening
  • Patient with HBV DNA decrease more than 10-fold compared to the baseline after 8 weeks treatment with adefovir
  • Patient with ALT value between ULN x 1.5 and ULN x 5 at screening
  • Patient given a written consent voluntarily

Exclusion Criteria:

  • Have uncompensated liver disease
  • Serum creatinine > ULN x 1.5
  • Are positive for Hepatitis C, hepatitis D or HIV infection (confirmed by ELISA assay)
  • Had a previous liver or bone marrow transplant
  • Are currently taking any immunosuppressant or any possible immune modulatory drugs
  • Women who are pregnant or breastfeeding
  • Woman or man who plans a birth for study duration
  • Any experience of severe adverse drug reaction or any medical history of severe allergic disease
  • Patient with any severe disease (for example, heart failure, renal failure, pancreatitis, diabetes mellitus) affecting the study in discretion of investigator except liver disease
  • Patient with any other liver disease but hepatitis B (for example, hemochromatosis, Wilson's disease, alcoholic/non-alcoholic liver diseae)
  • Patient with intrahepatic tumors confirmed by imaging (liver biopsy)and abnormally increased alpha-fetoprotein
  • Patient with any present malignant tumor except liver or its history
  • Other inappropriate patient in discretion of investigator

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
Experimental: I
HB-110 2mg, 4mg or 8mg combined with Adefovir
Genetic: a mixed plasmid DNA (HB-110)
HB-110 2mg (or 4mg or 8mg), im, every other week, from week 0 to week 22 (total 12 injections) and Adefovir(Adefovir dipivoxil 10mg), od, from week -10 to from week 48.
Active Comparator: II
Adefovir
Drug: Adefovir
Adefovir(Adefovir dipivoxil)10mg, od, from week -10 to week 48.

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Time Frame
Adverse events and clinical laboratory abnormalities
Time Frame: 48 weeks
48 weeks

Secondary Outcome Measures

Outcome Measure
Time Frame
HBeAg/HBsAg seroconversion rate, HBV Ag specific T cell immunity
Time Frame: 24, 28, 32, 42, 44, and 48 week
24, 28, 32, 42, 44, and 48 week

Collaborators and Investigators

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

Sponsor

Genexine, Inc.

Investigators

  • Principal Investigator: Prof. Seung-kyu Yoon, M.D., The Department of Gastroenterology at Seoul St. Mary's Hospital

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

July 1, 2007

Primary Completion (Actual)

April 1, 2010

Study Completion (Actual)

December 1, 2010

Study Registration Dates

First Submitted

August 8, 2007

First Submitted That Met QC Criteria

August 8, 2007

First Posted (Estimate)

August 9, 2007

Study Record Updates

Last Update Posted (Estimate)

August 6, 2012

Last Update Submitted That Met QC Criteria

August 3, 2012

Last Verified

August 1, 2012

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • HB110_HB_I

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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