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Hepatitis BPhase 4NCT00774995

Immune Response of Healthy Subjects Who Received Neonatal Vaccination Course With Engerix™-B Vaccine.

A Phase 4 study testing EngerixTM-B in people with Hepatitis B, run by GlaxoSmithKline at 1 site in Thailand.

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

This study will evaluate the immune response of healthy subjects who received neonatal vaccination course with GSK Biologicals' Engerix™-B vaccine, approximately 20 years ago. The presence of immune memory against hepatitis B surface antigen (HBsAg) in these subjects will be investigated by the administration of a… Read more about this study

Who is it for?
Ages 19 to 22 yearsHealthy volunteers can take part
Conditions the study is for
Hepatitis B
What is being tested?
EngerixTM-B
Could I receive a placebo?
No, everyone receives an active treatment
How many people
49 participants
Where
1 siteThailand
Study dates
Nov 2008to Jun 2010
Phase
Phase 4
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 19 to 22 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Subjects who the investigator believes that they can and will comply with the requirements of the protocol should be enrolled in the study.
  • A male or female who received the complete neonatal primary vaccination course of Engerix™-B in the 103860/273 primary study approximately 20 years earlier.
  • Anti-HBs antibody concentrations less than the specified value at the last available follow-up time-point.
  • Written informed consent obtained from the subject.
  • Healthy subjects as established by medical history and clinical examination before entering into the study.
  • If the subject is female, she must be of non-childbearing potential,or if she is of childbearing potential, she must practice adequate contraception for 30 days prior to vaccination, have a negative pregnancy test and continue such precautions for 2 months after completion of the vaccination.

Who cannot join

  • Use of any investigational or non-registered product (drug or vaccine) other than the study vaccine within 30 days preceding the Engerix™-B challenge dose, or planned use during the study period.
  • Chronic administration (defined as more than 14 days) of immunosuppressant or other immune-modifying drugs within six months prior to challenge dose administration.
  • Planned administration/ administration of a vaccine not foreseen by the study protocol starting from 30 days before the challenge dose and ending 30 days after.
  • Administration of a hepatitis B vaccine outside the context of this study between the follow-up time-point at which anti-HBs antibody concentrations was less than the specified value and the current challenge dose study visit.
  • Concurrently participating in another clinical study, at any time during the study period, in which the subject has been or will be exposed to an investigational or a non-investigational product
  • History of allergic disease or reactions likely to be exacerbated by any component of the vaccine.
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  • Acute disease at the time of enrolment.
  • Any confirmed or suspected immunosuppressive or immunodeficient condition, including human immunodeficiency virus (HIV) infection.
  • Acute or chronic, clinically significant pulmonary, cardiovascular, hepatic or renal functional abnormality, as determined by physical examination or laboratory screening tests.
  • Administration of immunoglobulins and/or any blood products within the three months preceding the challenge dose visit or planned administration during the study period.
  • Pregnant or lactating female.
  • Female planning to become pregnant or planning to discontinue contraceptive precautions.

Trial locations and contacts

1 site in 1 country.

Thailand1 site
  • GSK Investigational Site

    Bangkok, 10330

Other trials in Thailand

About this study

Official title: Study to Evaluate the Immune Response of Healthy Subjects Who Received Neonatal Vaccination Course With GSK Biologicals' Engerix™-B Vaccine, Approximately 20 Years Ago.

This study will evaluate the immune response of healthy subjects who received neonatal vaccination course with GSK Biologicals' Engerix™-B vaccine, approximately 20 years ago. The presence of immune memory against hepatitis B surface antigen (HBsAg) in these subjects will be investigated by the administration of a challenge dose of hepatitis B vaccine and the comparison of their antibody concentration before and one month after vaccination.

This protocol posting deals with objectives \& outcome measures of the booster phase. No new subjects will be recruited during this booster phase of the study.

Conditions
Hepatitis B
Being tested
EngerixTM-B
Keywords
Engerix-B, Hepatitis B
Medical subject headings
Hepatitis B

What participants receive

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

  • EngerixTM-BBiological

    Intramuscular injection, one dose.

Study groups in NCT00774995
Study groupRoleWhat they receive
Engerix(4-dose)+HepatitisB(HB) Immunoglobulin (Ig)ExperimentalSubjects who previously received HBV vaccine at 0, 1, 6 and 60 months (4 doses) and HBIg concomitantly at Month 0, and received a challenge dose of HBV vaccine after approximately 20 years (noted as Day 0) in the current study.
Receives: Biological: EngerixTM-B
Engerix(3-dose)+HBIgExperimentalSubjects who previously received HBV vaccine at 0, 1, 6 months (3 doses) and HBIg concomitantly at Month 0, and received a challenge dose of HBV vaccine after approximately 20 years (noted as Day 0) in the current study.
Receives: Biological: EngerixTM-B
Engerix(4-dose)ExperimentalSubjects who previously received HBV vaccine at 0, 1, 6 and 60 months (4 doses) and received a challenge dose of HBV vaccine after approximately 20 years (noted as Day 0) in the current study.
Receives: Biological: EngerixTM-B
Engerix(3-dose)ExperimentalSubjects who previously received HBV vaccine at 0, 1, 6 months (3 doses) and received a challenge dose of HBV vaccine after approximately 20 years (noted as Day 0) in the current study.
Receives: Biological: EngerixTM-B

What is being measured

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

  1. Number of Subjects With an Anamnestic Response to a Challenge Dose of Hepatitis B Virus (HBV) Vaccine as Measured by Enzyme-Linked Immunosorbent Assay (ELISA).

    Anamnestic response to the challenge dose is defined as: - At least (i.e. greater than or equal to) a 4-fold rise in post-challenge anti-HBsAg antibody concentrations in subjects seropositive at the last available follow-up time-point. -Post-challenge dose anti-HBsAg antibody concentrations >= 10 mIU/mL in subjects seronegative at the last available follow-up time-point.

    Measured: One month after the hepatitis B vaccine challenge dose.

  2. Number of Subjects With an Anamnestic Response to a Challenge Dose of Hepatitis B Virus (HBV) Vaccine as Measured by ChemiLuminescence ImmunoAssay (CLIA).

    Anamnestic response to the challenge dose is defined as: - At least (i.e. greater than or equal to) a 4-fold rise in post-challenge anti-HBsAg antibody concentrations in subjects seropositive at the last available follow-up time-point. -Post-challenge dose anti-HBsAg antibody concentrations >= 10 mIU/mL in subjects seronegative at the last available follow-up time-point.

    Measured: One month after the hepatitis B vaccine challenge dose.

Secondary outcomes (6)
  1. Number of Subjects With Anti-Hepatitis B Surface (HBs) Antibody Concentrations Above Cut-off Values as Measured by ELISA.

    Cut-off values assessed were as follows: ≥3.3 milli-international units/milliliter (mIU/mL), ≥10 mIU/mL, ≥100 mIU/mL

    Measured: One month after the hepatitis B vaccine challenge dose.

  2. Number of Subjects With Anti-Hepatitis B Surface (HBs) Antibody Concentrations Above Cut-off Values as Measured by CLIA.

    Cut-off values assessed were as follows: ≥6.2 milli-international units/milliliter (mIU/mL), ≥10 mIU/mL, ≥100 mIU/mL

    Measured: One month after the hepatitis B vaccine challenge dose.

  3. Anti-hepatitis B Surface Antigen (Anti-HBs) Antibody Concentration as Measured by ELISA.

    Concentrations given as GMC expressed as milli-international unit per millilitre (mIU/mL).

    Measured: One month after the hepatitis B vaccine challenge dose.

  4. Anti-hepatitis B Surface Antigen (Anti-HBs) Antibody Concentration as Measured by CLIA.

    Concentrations given as GMC expressed as milli-international unit per millilitre (mIU/mL).

    Measured: One month after the hepatitis B vaccine challenge dose.

  5. Number of Subjects Experiencing Any, Grade 3 and Related to Vaccination 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. Grade 3 symptom is any event that prevented normal activities. Related symptom is an event that was considered by investigator as causally related to the study vaccination.

    Measured: During the 31-day follow-up period after the hepatitis B vaccine challenge dose.

  6. Number of Subjects That Experienced 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 entire study period after the challenge dose (1 month).

Timeline

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

  1. First posted17 Oct 2008 (estimated)
  2. Study startNov 2008
  3. Primary completionJun 2010
  4. Study completionJun 2010

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 4
Primary purpose
Prevention
Allocation
Non-randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
49 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00774995
Sponsor's protocol ID
110073
Status last verified
Sep 2016
First submitted
16 Oct 2008
Last updated
2 Nov 2016
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

  • Poovorawan Y, Chongsrisawat V, Theamboonlers A, Leroux-Roels G, Crasta PD, Hardt K. Persistence and immune memory to hepatitis B vaccine 20 years after primary vaccination of Thai infants, born to HBsAg and HBeAg positive mothers. Hum Vaccin Immunother. 2012 Jul;8(7):896-904. doi: 10.4161/hv.19989. Epub 2012 Jul 1.

    PubMed 22777097

Questions about this trial

What is this clinical trial studying?

A Phase 4 study testing EngerixTM-B in people with Hepatitis B, run by GlaxoSmithKline at 1 site in Thailand.

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 6 inclusion and 12 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 2 Nov 2016. 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 Thailand. 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 4 studies take place after a treatment is approved, to learn more about its long-term benefits and risks in everyday use.

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 27 Jun 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 an Anamnestic Response to a Challenge Dose of Hepatitis B Virus (HBV) Vaccine as Measured by Enzyme-Linked Immunosorbent Assay (ELISA). (time frame: One month after the hepatitis B vaccine challenge dose.). The study lists 2 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 NCT00774995, which also lists 1 linked publication.

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 2 Nov 2016.

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