A Study of a Vaccine Against Respiratory Syncytial Virus (RSV) When Given Alone and Together With a Vaccine Against Diphtheria, Pertussis and Tetanus (Tdap) Viruses Followed by a 2nd Dose of the RSV Vaccine to Healthy Non-Pregnant Women
Public ClinicalTrials.gov record NCT04138056. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Official title
A Phase II Study of a Primary Dose of Investigational RSV Maternal Vaccine, Given Alone or With Boostrix, With a 2nd Dose Investigational RSV Maternal Vaccine
Study identification
- NCT ID
- NCT04138056
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 2
- Lead sponsor
- GlaxoSmithKline
- Industry
- Enrollment
- 509 participants
Conditions and interventions
Conditions
Interventions
- Boostrix-US Biological
- Boostrix-ex-US Biological
- Placebo Drug
- RSVPreF3 formulation 2 Biological
- RSVPreF3 formulation 3 Biological
Biological · Drug
Eligibility (public fields only)
- Age range
- 18 Years to 45 Years
- Sex
- Female
- Healthy volunteers
- Accepts healthy volunteers
This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.
Study timeline
- Start date
- Nov 4, 2019
- Primary completion
- Feb 24, 2020
- Completion
- Nov 21, 2021
- Last update posted
- Aug 20, 2024
2019 – 2021
United States locations
- U.S. sites
- 4
- U.S. states
- 4
- U.S. cities
- 4
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| GSK Investigational Site | Miami | Florida | 33143 | — |
| GSK Investigational Site | Lenexa | Kansas | 66219 | — |
| GSK Investigational Site | Rochester | New York | 14609 | — |
| GSK Investigational Site | Seattle | Washington | 98105 | — |
Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.
Non-U.S. locations
This page focuses on the U.S. directory. The official record also lists 4 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT04138056, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
- What this page does not do
- No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
- Where the data comes from
- Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
- Last refresh
- Last update posted Aug 20, 2024 · Synced May 19, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT04138056 live on ClinicalTrials.gov.