A Study of mRNA-1345 Vaccine Targeting Respiratory Syncytial Virus in Pregnant Women and in Infants Born to Vaccinated Mothers
Public ClinicalTrials.gov record NCT06143046. 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 2, Randomized, Observer-Blind, Placebo-Controlled, Dose-Escalation Study to Evaluate the Reactogenicity, Safety, and Immunogenicity of mRNA-1345, an mRNA Vaccine Targeting Respiratory Syncytial Virus, in Pregnant Women, and Safety and Immunogenicity in Infants Born to Vaccinated Mothers
Brief summary
Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.
The purpose of the study is to evaluate the reactogenicity, safety, and immunogenicity of an investigational respiratory syncytial virus (RSV) vaccine, mRNA-1345, in pregnant women, and safety and immunogenicity in infants born to vaccinated mothers.
Study identification
- NCT ID
- NCT06143046
- Recruitment status
- Completed
- Study type
- Interventional
- Phase
- Phase 2
- Enrollment
- 360 participants
Conditions and interventions
Conditions
Eligibility (public fields only)
- Age range
- 0 Years to 40 Years
- Sex
- All
- 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 14, 2023
- Primary completion
- May 24, 2026
- Completion
- May 24, 2026
- Last update posted
- Jun 9, 2026
2023 – 2026
United States locations
- U.S. sites
- 22
- U.S. states
- 11
- U.S. cities
- 22
| Facility | City | State | ZIP | Site status |
|---|---|---|---|---|
| SEC Clinical Research LLC - Dothan 2 - ClinEdge - PPDS | Dothan | Alabama | 36305-7376 | — |
| Abby's Research Institute | Phoenix | Arizona | 85031-3878 | — |
| Watching Over Mothers & Babies | Tucson | Arizona | 85712 | — |
| Applied Research Center of Arkansas - ClinEdge - PPDS | Little Rock | Arkansas | 72212-4169 | — |
| Matrix Clinical Research - Gardena | Gardena | California | 90247-4956 | — |
| Matrix Clinical Research - Huntington Park | Huntington Park | California | 90255-2913 | — |
| Matrix Clinical Research, Inc - Corporate Office | Los Angeles | California | 90057-4103 | — |
| Clinical Research Prime - ClinEdge - PPDS | Idaho Falls | Idaho | 83404-5305 | — |
| Bingham Memorial Hospital | Pocatello | Idaho | 83201 | — |
| Clinical Research Prime - ClinEdge - Rexburg - PPDS | Rexburg | Idaho | 83440-5390 | — |
| Velocity Clinical Research - Covington - PPDS | Covington | Louisiana | 70433-7237 | — |
| Saginaw Valley Medical Research Group LLC | Saginaw | Michigan | 48604-9533 | — |
| Boeson Research GTF - Great Falls - ERN - PPDS | Great Falls | Montana | 59405-5316 | — |
| Boeson Research KAL - Kalispell - ERN - PPDS | Kalispell | Montana | 59901-2158 | — |
| Boeson Research MSO - Missoula - ERN - PPDS | Missoula | Montana | 59804-7401 | — |
| Velocity Clinical Research (Grand Island - Nebraska) - PPDS | Grand Island | Nebraska | 68803-4327 | — |
| Velocity Clinical Research (Hastings - Nebraska) - PPDS | Hastings | Nebraska | 68901-2615 | — |
| Velocity Clinical Research (Norfolk - Nebraska) - PPDS | Norfolk | Nebraska | 68701-7701 | — |
| DM Clinical Research - Bellaire - ERN - PPDS | Houston | Texas | 77081 | — |
| Maximos OB/GYN | League City | Texas | 77573-2681 | — |
| SMS Clinical Research | Mesquite | Texas | 75149 | — |
| Maternal Fetal Diagnostics Center | Salt Lake City | Utah | 84132-0001 | — |
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 34 non-U.S. sites.
About this trial record page
- What this page shows
- Public field values for ClinicalTrials.gov record NCT06143046, 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 Jun 9, 2026 · Synced Sep 25, 2026
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Open the official record
The complete protocol, eligibility criteria, and contact information for NCT06143046 live on ClinicalTrials.gov.