CompletedPhase 2

3 Formulations of Hib-MenCY-TT Vaccine & 1 Formulation of Hib-MenC-TT Vaccine Compared to Licensed Meningococcal Serogroup C Conjugate Vaccine, Each Administered at 2,3,4 Mths of Age

Belgium, Germany388 participantsStarted 2003-03-01

Plain-language summary

This study evaluated the safety and immunogenicity of 3 formulations of Hib-MenCY-TT vaccine and 1 formulation of Hib-MenC-TT vaccine compared to a control group receiving licensed meningococcal serogroup C conjugate vaccine, each administered at 2, 3, and 4 months of age. Antibody persistence and immune responses to booster vaccinations were additionally assessed at 12 to 18 months of age.

Who can participate

Age range

6 Weeks – 12 Weeks

Sex

ALL

See this in plain English?

AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.

Inclusion Criteria: * Healthy infants without major congenital illness, immunosuppression, or chronic disease born at 36 to 42 weeks of gestation, between 6 and 12 weeks of age at enrollment, and vaccinated against hepatitis B at birth. Exclusion Criteria: * Infants should not have received any investigational drug, vaccine, chronic immunosuppressants, or immunoglobulin or blood products.

Questions worth asking your doctor

Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.

1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?

Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.

Questions for the trial coordinator

The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.

1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?

A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.

What they're measuring

Number of Subjects With Anti-polyribosyl-ribitol Phosphate (Anti-PRP) Antibody Concentration Equal to or Above 1 Microgram Per Millilitre (µg/mL).

Timeframe: One month after dose 3 (at study Month 3 - primary phase)

Number of Subjects With Meningococcal Serogroup C Serum Bactericidal Assay Using Rabbit Complement (rSBA-MenC) Titre Equal to or Above 1:8

Timeframe: One month after dose 3 (at study Month 3 - primary phase)

Number of Subjects With Meningococcal Serogroup Y Serum Bactericidal Assay Using Rabbit Complement (rSBA-MenY) Titre Equal to or Above 1:8

Timeframe: One month after dose 3 (at study Month 3 - primary phase)

Number of Subjects With Anti-polyribosyl-ribitol Phosphate (Anti-PRP) Antibody Concentration Equal to or Above 1 Microgram Per Millilitre (µg/mL).

Timeframe: One month after the booster vaccination (at study Month 1 - booster phase)

Number of Subjects With Meningococcal Serogroup C Serum Bactericidal Assay Using Rabbit Complement (rSBA-MenC) Titre Equal to or Above 1:8

Timeframe: One month after the booster vaccination (at study Month 1 - booster phase)

Number of Subjects With Meningococcal Serogroup Y Serum Bactericidal Assay Using Rabbit Complement (rSBA-MenY) Titre Equal to or Above 1:8

Trial details

NCT IDNCT00129116

SponsorGlaxoSmithKline

Sponsor typeINDUSTRY

Study typeINTERVENTIONAL

Primary completion2003-12-01

Results submitted2012-06-15

View on ClinicalTrials.gov More Haemophilus Influenzae Type b trials