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NCT03642847 · ClinicalTrials.gov registry record · Phase 1
Trial to Evaluate the Safety and Immunogenicity of Multivalent Pneumococcal Vaccines in Japanese Adults 18 to 49 Years of Age
A Phase 1 study, sponsored by Pfizer.
- Completed
- Registry status
- Phase 1
- Development phase
- 104
- Enrollment target
NCT03642847: Completed Phase 1 study, sponsored by Pfizer.
NCT03642847 is a Phase 1 study that has completed, run by Pfizer. The registered enrollment target is 104 participants, above the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (73% higher). According to ClinicalTrials.gov, the official US trial registry.
The verdict
NCT03642847, a Phase 1 study, has completed, sponsored by Pfizer.
- COMPLETED
- Registry status
- Phase 1
- Development phase
- 104 participants
- Enrollment target
Study Summary
This Phase 1b will describe the safety and immunogenicity of 2 multivalent pneumococcal conjugate vaccine formulations in healthy Japanese adults in the United States.
Primary Outcome
Subjects reporting prompted local reactions within 14 days after vaccination (redness, swelling, and pain at the injection site).
Interventions
- BIOLOGICAL Prevnar 13
- BIOLOGICAL multivalent pneumococcal conjugate formulation 1
- BIOLOGICAL multivalent pneumococcal conjugate formulation 2
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 104 participants |
| Start Date | 2018-08-29 |
| Est. Completion | 2019-03-29 |
| Phase | Phase 1 |
What the finished NCT03642847 record still lists
NCT03642847 is an interventional study that assigns participants to a tested intervention. The registered 104 participants enrollment target is mid-sized for trials with a published cap, above the 60-participant average among 29,502 other Phase 1 trials with a reported enrollment target (73% higher).
The record links to 0 conditions, and to 3 interventions - of which Prevnar 13 is the first listed.
NCT03642847 does not publish any study locations in the registry export this page uses.
Frequently Asked Questions
What is clinical trial NCT03642847 about?
NCT03642847 is a clinical study titled "Trial to Evaluate the Safety and Immunogenicity of Multivalent Pneumococcal Vaccines in Japanese Adults 18 to 49 Years of Age". This Phase 1b will describe the safety and immunogenicity of 2 multivalent pneumococcal conjugate vaccine formulations in healthy Japanese adults in the United States.
What is the current status of trial NCT03642847?
This trial is currently completed. It is a Phase 1 study. The enrollment target is 104 participants. The study started on 2018-08-29. Estimated completion is 2019-03-29.
What interventions are being tested in trial NCT03642847?
The interventions under investigation include: Prevnar 13 (BIOLOGICAL), multivalent pneumococcal conjugate formulation 1 (BIOLOGICAL), multivalent pneumococcal conjugate formulation 2 (BIOLOGICAL).
Who is sponsoring clinical trial NCT03642847?
This trial is sponsored by Pfizer, which has 1,845 total clinical trials registered on ClinicalTrials.gov.
Learn More About Clinical Trials
How this trial's enrollment target compares
Where NCT03642847's enrollment target sits among peer trials
104 536th of 2000 higher than 1,460 of 2,000 other Phase 1 trials
participants (enrollment target), bucketed by value
Each bar is a band; taller bars hold more other Phase 1 trials. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source ClinicalTrials.gov registry export · 2026-08-08
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