- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01764126
Pneumococcal Protein Vaccine Safety and Immunogenicity Trial (PPR02)
Safety and Immunogenicity of Pneumococcal Protein Vaccine (PPrV) in Healthy Adults, Toddlers and Infants in Bangladesh
Study Overview
Status
Conditions
Detailed Description
This is a Phase I, single-center, randomized, placebo-controlled, step-down observer-blind study to assess the safety and immunogenicity of a single injection PPrV vaccine containing 50 µg of each protein (PcpA, PhtD and PlyD1) withadjuvant in healthy adults and toddlers, and of 3 injections in healthy infants (following the Expanded Program on Immunization [EPI] schedule) at 3 ascending dose levels (all adjuvanted 10, 25, and 50µg of each protein per dose level; with an additional un-adjuvanted formulation at 25 µg of each protein per dose level).
Overall, there will be 5 Cohorts. In Cohort I, adults will receive 1 injection of adjuvanted 50 µg PcpA, PhtD and PlyD1 PPrV vaccine (high dose) or placebo.
In Cohort II, toddlers will receive 1 injection of adjuvanted 50 µg PcpA, PhtD and PlyD1 PPrV vaccine or placebo.
In Cohorts III, IV and V, infants will receive 3 injections of one of the following PPrV vaccine formulations: adjuvanted 10 µg each PcpA, PhtD and PlyD1 (low dose), adjuvanted 25 µg each PcpA, PhtD and PlyD1 (middle dose), unadjuvanted 25 µg each PcpA, PhtD and PlyD1 (middle dose un-adjuvanted), or adjuvanted 50 µg each PcpA, PhtD and PlyD1 (high dose) or placebo, according to the EPI schedule (at 6 weeks, 10 weeks and 14 weeks), as well as concomitant applicable standard of care childhood vaccines ( Quinvaxem® [DTwP-HepB-Hib] vaccine, Bacillus Calmette-Guérin vaccine (BCG) (if not received at birth), and oral poliomyelitis vaccine [OPV]).
As a safety precaution, this trial will use a step-down approach for enrollment: for adults, 1 vaccination and acceptable review of safety data collected through Day 7 after injection, followed by enrollment of toddlers, 1 vaccination and acceptable review of safety data collected through Day 7 after injection, and then enrollment of infants (3 injections, EPI schedule). For infants, step-wise dose ascension is conditional upon acceptable safety reviews, which will be conducted after completion of the third vaccination of the EPI series at each dose level, using safety data collected through Day 7 after each of the vaccinations.
An Independent Data Monitoring Committee (IDMC) will be established for safety oversight of this study, for which a formal IDMC charter will be developed. For all safety reviews, blinded safety data will be provided to the Sponsor's Safety Management Team (SMT). The review will be performed by the SMT with presentation of findings, as per standard early safety review process, to the Sponsor's Safety Management Oversight Team (SMOT) in order to assess whether proceeding to the next ascending dose level is appropriate. The results will be communicated to the IDMC after each review. A formal IDMC review is proposed following completion of the Cohort II (toddler) safety review, prior to enrollment of Cohorts III, IV, and V (infants).
The study scheme is summarized in Figure 1, and details of safety reviews are described in the periodic safety data review (SDR) section. Electronic data capture (EDC) will be used for the collection of data generated in this study.
Study Type
Enrollment (Actual)
Phase
- Phase 1
Contacts and Locations
Study Locations
-
-
-
Dhaka, Bangladesh
- Icddr,b
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Healthy volunteers
Exclusion Criteria:
- Acute or chronic condition that would interfere with the ability to complete the observation period
- Allergy to egg or other vaccine components
- Receipt of antibiotics
- Receipt of immune modulating or blood products
- Receipt of pneumococcal vaccine or concomitant participation in other vaccine or drug trials
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Prevention
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Quadruple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Placebo Comparator: Placebo
|
One dose of 50 µg of each of three proteins with adjuvant (aluminium hydroxide) IM
Other Names:
Three doses, 4 weeks apart, of 10 µg of each of three proteins with adjuvant (aluminium hydroxide) IM
Other Names:
Three doses, 4 weeks apart, of 25 µg of each of three proteins with adjuvant (aluminium hydroxide) IM
Other Names:
Three doses, 4 weeks apart, of 25 µg of each of three proteins without adjuvant IM
Other Names:
Three doses, 4 weeks apart, of 50 µg of each of three proteins with adjuvant (aluminium hydroxide) IM
Other Names:
|
Active Comparator: Pneumococcal protein vaccine
|
One dose of 50 µg of each of three proteins with adjuvant (aluminium hydroxide) IM
Other Names:
Three doses, 4 weeks apart, of 10 µg of each of three proteins with adjuvant (aluminium hydroxide) IM
Other Names:
Three doses, 4 weeks apart, of 25 µg of each of three proteins with adjuvant (aluminium hydroxide) IM
Other Names:
Three doses, 4 weeks apart, of 25 µg of each of three proteins without adjuvant IM
Other Names:
Three doses, 4 weeks apart, of 50 µg of each of three proteins with adjuvant (aluminium hydroxide) IM
Other Names:
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Safety and tolerability
Time Frame: 30 days
|
We will measure solicited and unsolicited adverse events for seven days from the day of vaccination, and serious adverse events for 30 days following vaccination.
|
30 days
|
Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Immunogenicity
Time Frame: 30 days
|
We will assess the antibody response using standard methods for each of the three proteins in the vaccine against a pre-vaccination baseline.
For infants, this will be done with each of the three vaccine doses.
|
30 days
|
Collaborators and Investigators
Collaborators
Investigators
- Principal Investigator: W. Abdullah Brooks, MD, MPH, International Centre for Diarrhoeal Disease Research, Bangladesh
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- PR-11023
- U1111-1117-7316 (Other Identifier: WHO)
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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