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MalariaPhase 2NCT00443131

Characterisation of the Immune Responses of 2 Experimental Malaria Vaccines

A Phase 2 study testing GSK Malaria vaccine 257049 in people with Malaria, 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

In this study, two experimental malaria vaccines (with adjuvants) are tested to evaluate and characterise how the vaccine exactly works on the immune system by comparing it to a control (without adjuvant). The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007. Read more about this study

Who is it for?
Ages 18 to 45 yearsHealthy volunteers can take part
Conditions the study is for
Malaria
What is being tested?
GSK Malaria vaccine 257049
Could I receive a placebo?
No, everyone receives an active treatment
How many people
36 participants
Where
1 siteBelgium
Study dates
26 Mar 2007to 13 Jul 2007
Phase
Phase 2
Are there results?
None posted in the registry

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 to 45 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Subjects who the investigator believes can and will comply with the requirements of the protocol.
  • A male or female between, and including, 18 and 45 years of age at the time of the first vaccination.
  • Written informed consent obtained from the subject.
  • Free of obvious health problems as established by medical history and clinical examination before entering into the study.
  • Have clinically normal laboratory values for creatinine, alanine aminotransferase (ALT), aspartate aminotransferase (AST), complete blood count (CBC) and differential at screening.
  • Be seronegative for human immunodeficiency virus-1 and 2 (HIV 1/2) antibodies, HBsAg and hepatitis C virus (HCV) antibodies.
  • Have anti HBs titre ≥ 10mIU/ml at screening.
  • 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 series.

Who cannot join

  • Use of any investigational or non-registered product (drug or vaccine) other than the study vaccine(s) within 30 days preceding the first dose of study vaccine, or planned use during the study period.
  • Chronic administration (defined as more than 14 days) of immunosuppressants or other immune-modifying drugs within 6 months prior to the first vaccine dose.
  • Planned administration/ administration of a vaccine not foreseen by the study protocol within 30 days of the first dose of vaccine.
  • 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 (pharmaceutical product or device).
  • Any history of clinical malaria.
  • Known exposure to malaria parasites within the previous 12 months.
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  • Planned travel to a malaria endemic region during the study period.
  • History of allergic reactions or anaphylaxis to previous immunizations.
  • Any confirmed or suspected immunosuppressive or immunodeficient condition, based on medical history and physical examination.
  • Personal history of autoimmune disease or subjects who describe a first-degree relative with clearly documented autoimmune disease.
  • History of allergic disease or reactions likely to be exacerbated by any component of the vaccine(s).
  • Major congenital defects or serious chronic illness(es).
  • Acute disease at the time of enrolment.
  • History of any neurologic disorders or seizures.
  • Acute or chronic, clinically significant pulmonary, cardiovascular, hepatic or renal functional abnormality, as determined by physical examination or laboratory screening tests.
  • Hepatomegaly, right upper quadrant abdominal pain or tenderness.
  • Administration of immunoglobulins and/or any blood products within the three months preceding the first dose of study vaccine or planned administration during the study period.
  • History of previous exposure to experimental products containing any component of the vaccines used in this study.
  • Pregnant or lactating female.
  • History of chronic alcohol consumption and/or drug abuse.
  • Female planning to become pregnant or planning to discontinue contraceptive precautions.

Trial locations and contacts

1 site in 1 country.

Belgium1 site
  • GSK Investigational Site

    Ghent, 9000

Other trials in Belgium

About this study

Official title: Adjuvant Justification Study of Candidate Malaria Vaccines (257049), Administered According to a 0, 1, 2 Months Schedule .

In this study, two experimental malaria vaccines (with adjuvants) are tested to evaluate and characterise how the vaccine exactly works on the immune system by comparing it to a control (without adjuvant). The Protocol Posting has been updated in order to comply with the FDA Amendment Act, Sep 2007.

Conditions
Malaria
Being tested
GSK Malaria vaccine 257049
Keywords
Adjuvant, Malaria, Safety, Immunogenicity
Medical subject headings
Malaria

What participants receive

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

  • GSK Malaria vaccine 257049Biological

    Three-dose vaccination by slow intramuscular injection. Three different formulations of this vaccine are tested (without adjuvant, with adjuvant AS01B, with adjuvant AS02A).

Study groups in NCT00443131
Study groupRoleWhat they receive
Group AExperimentalNot described
Receives: Biological: GSK Malaria vaccine 257049
Group BExperimentalNot described
Receives: Biological: GSK Malaria vaccine 257049
Group CExperimentalNot described
Receives: Biological: GSK Malaria vaccine 257049

What is being measured

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

  1. Anti-CS antibody titers.

    Measured: One month post Dose 3.

Secondary outcomes (6)
  1. Occurrence, intensity and relationship to vaccination of solicited local and general symptoms.

    Measured: During the 7-day follow-up period following vaccination after each vaccine dose.

  2. Occurrence, intensity and relationship to vaccination of unsolicited symptoms.

    Measured: During the 30-day follow-up period following vaccination after each vaccine dose.

  3. Occurrence of serious adverse events.

    Measured: Up until 1 month post dose 3.

  4. Antibody responses to the P. falciparum circumsporozoite (CS) antigen.

    Measured: At Day 0, prior to dose 2, prior to dose 3 and 1 month post-dose 3.

  5. Antibody responses to HBs antigen.

    Measured: At Day 0, prior to dose 2, prior to dose 3 and 1 month post-dose 3

  6. Frequency of CS and Hepatitis B surface agent (HBs)-specific CD4+ and CD8+ T cells expressing Th1 specific activation markers and cytokines.

    Measured: At Day 0, prior to dose 2, prior to dose 3 and 1 month post-dose 3

Timeline

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

  1. First posted5 Mar 2007 (estimated)
  2. Study start26 Mar 2007
  3. Primary completion1 Jul 2007
  4. Study completion13 Jul 2007

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 2
Primary purpose
Prevention
Allocation
Randomised
Intervention model
Parallel groups
Masking
Triple blind
Who is masked
Participant, Investigator, Outcomes assessor
Enrolment
36 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00443131
Sponsor's protocol ID
107731
Status last verified
Apr 2017
First submitted
2 Mar 2007
Last updated
25 Apr 2017
Results posted
No
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.

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing GSK Malaria vaccine 257049 in people with Malaria, 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 8 inclusion and 21 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 25 Apr 2017. 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 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

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

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

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?

Anti-CS antibody titers. (time frame: One month post Dose 3.). It is what the study was designed to measure, not a finding.

Where can I read the original study information?
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 25 Apr 2017.

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