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Hepatitis BPhase 3NCT00289770

Long-term Immune Persistence of GSK Biologicals' Combined Hepatitis A & B Vaccine Injected According to a 0,1,6 Mth Schedule in Healthy Adults

A Phase 3 study testing Twinrix™ in people with Hepatitis B and Hepatitis A, run by GlaxoSmithKline at 1 site in Belgium.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

The aim of this study is to evaluate the long-term persistence of hepatitis A and B antibodies at Years 11, 12, 13, 14 and 15 after subjects received their first dose of a 3 dose primary vaccination schedule of combined hepatitis A/hepatitis B vaccine. Read more about this study

Who is it for?
Ages 18 years and olderHealthy volunteers can take part
Conditions the study is for
Hepatitis B, Hepatitis A
What is being tested?
Twinrix™
Could I receive a placebo?
No, everyone receives an active treatment
How many people
50 participants
Where
1 siteBelgium
Study dates
1 Nov 2004to 20 Dec 2004
Phase
Phase 3
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • Healthy volunteers accepted
  • Adult, Older adult

Who may be able to join

  • Subjects who had consented to participate in the long-term follow-up studies at the previous long-term blood sampling time points
  • Written informed consent will have been obtained from each subject. before the blood sampling visit of each year.

Who cannot join

None listed.

Trial locations and contacts

1 site in 1 country.

Belgium1 site
  • GSK Investigational Site

    Wilrijk, 2610

Other trials in Belgium

About this study

Official title: A Double Blind Randomised, Comparative Study of the Immunogenicity and Reactogenicity of Three Different Lots of GlaxoSmithKline Biologicals' Combined Hepatitis A - Hepatitis B Vaccine When Administered in Healthy Adults

The aim of this study is to evaluate the long-term persistence of hepatitis A and B antibodies at Years 11, 12, 13, 14 and 15 after subjects received their first dose of a 3 dose primary vaccination schedule of combined hepatitis A/hepatitis B vaccine. The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007.

This protocol posting deals with objectives \& outcome measures of the extension phase at Year 11-15.

Read the detailed description

This is a long-term follow-up study at Years 11, 12, 13, 14 and 15 after primary vaccination with GSK Biologicals' hepatitis A/hepatitis B vaccine (three-dose schedule with 3 different lots). To evaluate the long-term antibody persistence, volunteers will be bled at Years 11, 12, 13, 14 and 15 after the first vaccine dose of the primary vaccination course to determine their anti-HAV and anti-HBs antibody concentrations.

No additional subjects will be recruited in the course of this extension study. If a subject has become seronegative for anti-HAV antibodies or lost anti-HBs seroprotection concentrations at the long-term blood sampling time point (i.e. Years 11, 12, 13, 14 or 15), he/ she will be offered an additional vaccine dose.

Being tested
Twinrix™
Keywords
TWINRIX™ ADULT, Hepatitis A, Hepatitis B
Medical subject headings
Hepatitis B, Hepatitis A

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • Twinrix™Biological

    Intramuscular injection, 3 doses

Study groups in NCT00289770
Study groupRoleWhat they receive
Group AExperimentalWas vaccinated with Lot A in the primary study.
Receives: Biological: Twinrix™
Group BExperimentalWas vaccinated with Lot B in the primary study.
Receives: Biological: Twinrix™
Group CExperimentalWas vaccinated with Lot C in the primary study.
Receives: Biological: Twinrix™

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Number of Subjects With Anti-hepatitis A (Anti-HAV) Antibody Concentrations Equal to or Above Cut-off Value

    Cut-off value was defined as 15 milli-international units per milliliter (mIU/mL). This was considered as seropositivity.

    Measured: Years 11, 12, 13, 14 and 15

  2. Number of Subjects With Anti-hepatitis B Surface Antigen (Anti-HBs) Antibody Concentrations Equal to or Above Cut-off Values

    Cut-off values were defined 3.3 mIU/mL for the in-house anti-HBs assay and 6.2 mIU/mL for the ChemiLuminescence ImmunoAssay, which was also considered as seropositivity, and 10 mIU/mL.

    Measured: Years 11, 12, 13, 14 and 15

  3. Anti-HAV and Anti-HBs Antibody Concentrations

    Concentrations are expressed as geometric mean concentrations (GMCs) in mIU/mL.

    The laboratory assay was changed from Year 13 to Year 14 to in-house ELISA and at Year 15 to CLIA for anti-HBs GMCs.Thus for the sake of bridging, blood samples corresponding to Year 14 previously tested with ELISA were re-tested with CLIA (Year 14*).

    Measured: Years 11, 12, 13, 14 and 15

  4. Anti-HBs Antibody Concentrations

    Subjects who lost seroprotective concentrations for anti-HBs (< 10 mIU/mL) at any of the LT follow-up timepoints received an additional dose of Engerix after year 15.

    Two subjects were eligible for this after Year 11.

    3.29 in the table means a concentration of < 3.3 mIU/mL.

    As the concentration was calculated per subject no mean concentration was calculated and also no measure of dispersion.

    Measured: at Year 11, pre-additional vaccine, after additional dose of Engerix

  5. Number of Subjects, Receiving an Additional Vaccination of Engerix, With an Anamnestic Response

    Anamnestic response was assessed in subjects receiving an additional vaccine dose of Engerix. Two subjects were found eligible at Year 11 for this additional vaccine dose.

    Anamnestic response was defined as:

    • post-additional vaccination anti-HBs concentration >= 10 mIU/mL in subject seronegative before additional dose.
    • 4-fold increase post-additional dose compared to pre-additional vaccine time point.

    Measured: 30 days post additional dose of Engerix

  6. Number of Subjects With Solicited Local and General Symptoms Assessed

    Solicited local symptoms were pain, redness and swelling. Solicited general symptoms were fatigue, fever, gastrointestinal, headache.

    Measured: During the 4-day follow-up period after additional vaccination with Engerix

  7. Number of Subjects With Unsolicited Symptoms

    Unsolicited AE covers any AE reported in addition to those solicited during the clinical study and any solicited symptom with onset outside the specified period of follow-up for solicited symptoms.

    Measured: During the 30-day follow-up period after additional Engerix vaccination

  8. Number of Subjects With Serious Adverse Events (SAEs)

    SAEs assessed include medical occurrences that result in death, are life threatening, require hospitalization or prolongation of hospitalization, result in disability/incapacity or are a congenital anomaly/birth defect in the offspring of a study subject

    Measured: During the 30-day follow-up period after additional Engerix vaccination

  9. Number of Subjects With Serious Adverse Events (SAEs) Determined by the Investigator to Have a Causal Relationship to Primary Vaccination or Due to Lack of Vaccine Efficacy

    SAEs assessed include medical occurrences that result in death, are life threatening, require hospitalization or prolongation of hospitalization, result in disability/incapacity or are a congenital anomaly/birth defect in the offspring of a study subject.

    Measured: up to Year 11, 12, 13, 14, 15

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted10 Feb 2006 (estimated)
  2. Study start1 Nov 2004
  3. Primary completion20 Dec 2004
  4. Study completion20 Dec 2004

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
50 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00289770
Sponsor's protocol ID
100551 (EXT Y11)
Other IDs
100552 (EXT Y12), 100553 (EXT Y13), 100554 (EXT Y14), 100555 (EXT Y15)
Status last verified
Sep 2016
First submitted
9 Feb 2006
Last updated
17 Aug 2018
Individual data sharing
Yes: Patient-level data for this study will be made available through www.clinicalstudydatarequest.com following the timelines and process described on this site.

Publications

  • Van Damme P, Leroux-Roels G, Crasta P, Messier M, Jacquet JM, Van Herck K. Antibody persistence and immune memory in adults, 15 years after a three-dose schedule of a combined hepatitis A and B vaccine. J Med Virol. 2012 Jan;84(1):11-7. doi: 10.1002/jmv.22264. Epub 2011 Nov 3.

    PubMed 22052690
  • Van Damme P, Leroux-Roels G, Law B, Diaz-Mitoma F, Desombere I, Collard F, Tornieporth N, Van Herck K. Long-term persistence of antibodies induced by vaccination and safety follow-up, with the first combined vaccine against hepatitis A and B in children and adults. J Med Virol. 2001 Sep;65(1):6-13.

    PubMed 11505437
  • Van Herck K, Leroux-Roels G, Van Damme P, Srinivasa K, Hoet B. Ten-year antibody persistence induced by hepatitis A and B vaccine (Twinrix) in adults. Travel Med Infect Dis. 2007 May;5(3):171-5. doi: 10.1016/j.tmaid.2006.07.003. Epub 2006 Sep 20.

    PubMed 17448944

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Twinrix™ in people with Hepatitis B and Hepatitis A, run by GlaxoSmithKline at 1 site in Belgium.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 2 inclusion and 0 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 17 Aug 2018. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 1 site in Belgium. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 23 Feb 2011). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Number of Subjects With Anti-hepatitis A (Anti-HAV) Antibody Concentrations Equal to or Above Cut-off Value (time frame: Years 11, 12, 13, 14 and 15). The study lists 9 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT00289770, which also lists 3 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 17 Aug 2018.

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