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Showing 1–13 of 13 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: mRNA-1345 Clear all
Completed Phase 3 Interventional

A Study to Investigate the Immunogenicity and Safety of mRNA-1345 Vaccine Targeting Respiratory Syncytial Virus (RSV) in High-risk Adults

NCT06067230
View directory record Official record
Conditions
Respiratory Syncytial Virus
Interventions
mRNA-1345
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,153 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
32
States / cities
Glendale, Arizona • Phoenix, Arizona • Tempe, Arizona + 28 more
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Sep 2, 2026, 5:23 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

A Study of mRNA-1345 Following a Primary Dose of a Licensed Protein Subunit Respiratory Syncytial Virus (RSV) Vaccine in Adult Participants ≥60 Years of Age

NCT07117487
View directory record Official record
Conditions
Respiratory Syncytial Virus
Interventions
mRNA-1345
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
60 Years and older
Enrollment
507 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
11
States / cities
Denver, Colorado • Hialeah, Florida • Savannah, Georgia + 8 more
Source: ClinicalTrials.gov public record
Updated May 3, 2026 · Synced Sep 2, 2026, 5:23 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

A Study of mRNA-1345, an mRNA Vaccine Targeting Respiratory Syncytial Virus, in Children 2 to <18 Years of Age at High Risk of Respiratory Syncytial Virus

NCT06097299
View directory record Official record
Conditions
Respiratory Syncytial Virus
Interventions
mRNA-1345, Placebo
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
2 Years to 17 Years
Enrollment
349 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
47
States / cities
Phoenix, Arizona • Scottsdale, Arizona • Banning, California + 41 more
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Sep 2, 2026, 5:23 AM EDT
Active, not recruiting Phase 1 Interventional

A Safety, Tolerability, and Immunogenicity Study of mRNA-1345 and mRNA-1365 in Participants Aged 5 Months to <24 Months

NCT05743881
View directory record Official record
Conditions
Respiratory Syncytial Virus, Human Metapneumovirus
Interventions
mRNA-1345, mRNA-1365, Placebo, Nimenrix
Biological · Drug
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
5 Months to 24 Months
Enrollment
186 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
12
States / cities
Los Angeles, California • Washington D.C., District of Columbia • Melrose Park, Illinois + 8 more
Source: ClinicalTrials.gov public record
Updated Jun 25, 2026 · Synced Sep 2, 2026, 5:23 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study of Modified mRNA Vaccines in Healthy Adults

NCT05397223
View directory record Official record
Conditions
SARS-CoV-2, Seasonal Influenza, Respiratory Syncytial Virus, Cytomegalovirus
Interventions
mRNA-1273, mRNA-1010, mRNA-1345, FLUAD®, mRNA-1647
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
308 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
8
States / cities
Hollywood, Florida • Savannah, Georgia • Sioux City, Iowa + 4 more
Source: ClinicalTrials.gov public record
Updated Mar 11, 2026 · Synced Sep 2, 2026, 5:23 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study of mRNA-1345 Vaccine Targeting Respiratory Syncytial Virus (RSV) in Adults ≥50 Years of Age

NCT05330975
View directory record Official record
Conditions
Respiratory Syncytial Virus
Interventions
Placebo, mRNA-1345, Afluria® Quadrivalent, mRNA-1273.214
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
50 Years and older
Enrollment
3,317 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
62
States / cities
Birmingham, Alabama • Tucson, Arizona • Garden Grove, California + 51 more
Source: ClinicalTrials.gov public record
Updated Dec 29, 2025 · Synced Sep 2, 2026, 5:23 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

A Study to Evaluate the Safety and Immune Response of mRNA-1345, a Vaccine Targeting Respiratory Syncytial Virus (RSV), When Co-administered With a Fluzone HD, in Adults ≥65 Years of Age

NCT06060457
View directory record Official record
Conditions
Respiratory Syncytial Virus
Interventions
Placebo, mRNA-1345, Fluzone HD
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
65 Years and older
Enrollment
1,900 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
34
States / cities
Scottsdale, Arizona • Dublin, California • Riverside, California + 29 more
Source: ClinicalTrials.gov public record
Updated Jul 29, 2025 · Synced Sep 2, 2026, 5:23 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Safety, Reactogenicity, and Immunogenicity Study of mRNA-1045 (Influenza and Respiratory Syncytial Virus [RSV]) or mRNA-1230 (Influenza, RSV, and Severe Acute Respiratory Syndrome Coronavirus 2 [SARS-CoV-2]) Vaccine in Adults 50 to 75 Years Old

NCT05585632
View directory record Official record
Conditions
SARS-CoV-2, Influenza, RSV
Interventions
mRNA-1010, mRNA-1345, mRNA-1273.214, mRNA-1045, mRNA-1230
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
50 Years to 75 Years
Enrollment
392 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
14
States / cities
DeLand, Florida • Hollywood, Florida • St. Petersburg, Florida + 11 more
Source: ClinicalTrials.gov public record
Updated Mar 7, 2024 · Synced Sep 2, 2026, 5:23 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

A Study of mRNA-1345 Vaccine Targeting Respiratory Syncytial Virus in Pregnant Women and in Infants Born to Vaccinated Mothers

NCT06143046
View directory record Official record
Conditions
Respiratory Syncytial Virus
Interventions
mRNA-1345, Placebo
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
0 Years to 40 Years
Enrollment
360 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
22
States / cities
Dothan, Alabama • Phoenix, Arizona • Tucson, Arizona + 19 more
Source: ClinicalTrials.gov public record
Updated Jun 9, 2026 · Synced Sep 2, 2026, 5:23 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Dose Escalation Study to Evaluate Safety, Reactogenicity, and Immunogenicity of mRNA-1345 in Healthy Adults and in Children Who Are Respiratory Syncytial Virus (RSV)-Seropositive

NCT04528719
View directory record Official record
Conditions
Respiratory Syncytial Virus
Interventions
mRNA-1345, Placebo
Biological · Drug
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
12 Months to 79 Years
Enrollment
651 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2024
U.S. locations
31
States / cities
La Mesa, California • West Hollywood, California • DeLand, Florida + 28 more
Source: ClinicalTrials.gov public record
Updated Aug 6, 2024 · Synced Sep 2, 2026, 5:23 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

A Study to Evaluate the Safety, Reactogenicity, and Immunogenicity of mRNA-1010 in Healthy Adults

NCT05606965
View directory record Official record
Conditions
Influenza
Interventions
mRNA-1010, Egg-based Quadrivalent Influenza Vaccine, Adjuvanted Quadrivalent Influenza Vaccine, Inactivated Influenza Vaccine, mRNA-1345, mRNA-1045
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
18 Years to 80 Years
Enrollment
172 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Nov 23, 2025 · Synced Sep 2, 2026, 5:23 AM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers

A Study to Evaluate the Safety and Efficacy of mRNA-1345 Vaccine Targeting Respiratory Syncytial Virus (RSV) in Adults ≥60 Years of Age

NCT05127434
View directory record Official record
Conditions
Respiratory Syncytial Virus
Interventions
Placebo, mRNA-1345
Drug
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
60 Years and older
Enrollment
36,814 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2025
U.S. locations
133
States / cities
Birmingham, Alabama • Guntersville, Alabama • Huntsville, Alabama + 114 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2025 · Synced Sep 2, 2026, 5:23 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Moderna Vaccine mRNA-1345 Observational Respiratory Syncytial Virus (RSV) Study

NCT05572658
View directory record Official record
Conditions
Respiratory Syncytial Virus
Interventions
mRNA-1345, Placebo
Biological
Lead sponsor
ModernaTX, Inc.
Industry
Eligibility
60 Years and older
Enrollment
10,994 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
109
States / cities
Birmingham, Alabama • Guntersville, Alabama • Huntsville, Alabama + 93 more
Source: ClinicalTrials.gov public record
Updated Jan 23, 2025 · Synced Sep 2, 2026, 5:23 AM EDT