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Quadrivalent Influenza mRNA Vaccine MRT5407

Phase 1

Influenza Immunization | Monoclonal antibody | Infectious Disease |Sanofi|Last Updated: Jan 24, 2025

Success Probability

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Trial Design

RandomizedDouble-BlindACTIVE_CONTROLLED
Total Trials1
Total Enrollment560

FDA Designations

No designations recorded

Clinical trial landscape

Quadrivalent Influenza mRNA Vaccine MRT5407 · 1 trial · 1 indication

Phase 1 1
NCT05553301Safety and Immunogenicity of Quadrivalent Influenza mRNA Vaccine MRT5407 in Adult Participants18 Years of Age and OlderInfluenza Immunization
COMPLETED560 Analytics
PHASE1COMPLETED
Safety and Immunogenicity of Quadrivalent Influenza mRNA Vaccine MRT5407 in Adult Participants18 Years of Age and Older
Influenza ImmunizationUnlock trial analytics

Study Endpoints

Primary Endpoints

Number of participants with immediate adverse events (AEs)
Within 30 minutes after injection

Unsolicited systemic AEs that occur within 30 minutes after vaccination

Number of participants with solicited injection site and systemic reactions
Up to 7 days after injection

Adverse reactions pre-listed in the protocol and case report form (CRF) Injection site reactions: pain, redness, swelling, hardening, bruising Systemic reactions: fever, headache, malaise, myalgia, arthralgia, chills

Number of participants with unsolicited AEs
Up to 28 days after injection

AEs that do not fulfill the conditions of solicited reactions

Number of participants with medically attended adverse events (MAAE)s
Up to 28 days after injection

AEs with a new onset or a worsening of a condition that prompts the participant or participant to seek unplanned medical advice at a physician's office or Emergency Department

Number of participants with serious adverse events (SAEs)
From Day one to Day 366

SAEs reported throughout the study

Number of participants with out-of-range biological test results
Up to 8 days after injection

Out-of-range biological test results (including shift from baseline values)

Individual Hemagglutination inhibition (HAI) titer
At Day 1 and Day 29

Antibody titers are expressed as GMTs at baseline and post-baseline

Percentage of participants with detectable antibody HAI titers greater than or equal to (≥) 10 [1/dil]
At Day 1 and Day 29
Individual HAI titer ratio
At Day 1 and Day 29

Ratios of antibody titers measured by HAI in each group before and after vaccination

Number of participants archiving HAI seroconversion against Antigens
At Day 1 and Day 29

Number of participants with titer \< 10 \[1/dil\] at Day 1 and post-vaccination titer ≥ 40 \[1/dil\] at Day 29, or titer ≥ 10 \[1/dil\] at Day 1 and a ≥ 4-fold-rise in titer \[1/dil\] at Day 29

Percentage of participants with antibody HAI titers greater than or equal to (≥) 40 [1/dil]
At Day 29
Percentage of participants with 2-fold and 4-fold rise in HAI titers
At Day 1 and Day 29

Secondary Endpoints

Neutralizing Ab titers
At Day 1 and Day 29
Individual neutralizing antibodies titer ratio
At Day 1 and Day 29
Percentage of participants with 2-fold and 4-fold increase in neutralizing titers
At Day 1 and Day 29
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
Group 1: Quadrivalent Influenza mRNA Vaccine MRT5407 dose level 1EXPERIMENTALparticipants will receive a single dose of QIV mRNA vaccine (dose level 1)
Group 2: Quadrivalent Influenza mRNA Vaccine MRT5407 dose level 2EXPERIMENTALparticipants will receive a single dose of QIV mRNA vaccine (dose level 2)
Group 3: RIV4ACTIVE_COMPARATORparticipants will receive a single dose of RIV4 vaccine
Group 4: QIV-SDACTIVE_COMPARATORparticipants will receive a single dose of QIV-SD vaccine
Group 5: QIV-HDACTIVE_COMPARATORparticipants will receive a single dose of QIV -HD vaccine (for elderly only)

Interventions

NameTypeDescription
Quadrivalent Influenza mRNA Vaccine MRT5407BIOLOGICALPharmaceutical Form: Liquid frozen solution in a vial Route of Administration: Intramuscular Injection
Quadrivalent Recombinant Influenza VaccineBIOLOGICALPharmaceutical Form: Liquid frozen solution in a vial Route of Administration: Intramuscular Injection
Quadrivalent Influenza Standard Dose VaccineBIOLOGICALPharmaceutical Form: Liquid suspension for injection in pre-filled syringe Route of Administration: Intramuscular Injection
Quadrivalent Influenza High-Dose VaccineBIOLOGICALPharmaceutical Form: Liquid suspension for injection in pre-filled syringe Route of Administration: Intramuscular Injection
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersYes
Study Sites25

Inclusion Criteria: * Aged 18 years on the day of inclusion * A female participant is eligible to participate if she is not pregnant or breastfeeding and one of the following conditions applies: * Is of non-childbearing potential. To be considered of non-childbearing potential, a female must be ...

Countries:United StatesPuerto Rico
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Frequently asked questions about Quadrivalent Influenza mRNA Vaccine MRT5407

What is Quadrivalent Influenza mRNA Vaccine MRT5407 used for?

Quadrivalent Influenza mRNA Vaccine MRT5407 is an investigational vaccine being developed for influenza immunization. It is designed to provide protection against influenza by targeting four different influenza virus strains. The vaccine is currently in clinical development and has not been approved by regulatory authorities.

Who makes Quadrivalent Influenza mRNA Vaccine MRT5407?

Quadrivalent Influenza mRNA Vaccine MRT5407 is being developed by Sanofi, a global biopharmaceutical company. Sanofi's stock is traded under the ticker symbol SNY. The company is conducting clinical trials to evaluate the safety and immunogenicity of this investigational vaccine.

What phase is Quadrivalent Influenza mRNA Vaccine MRT5407 in?

Quadrivalent Influenza mRNA Vaccine MRT5407 is in Phase 1 clinical development. It is an investigational vaccine, meaning it has not yet been approved by regulatory authorities. The Phase 1 trial has been completed, and the vaccine is still undergoing clinical evaluation.

What clinical trials is Quadrivalent Influenza mRNA Vaccine MRT5407 in?

Quadrivalent Influenza mRNA Vaccine MRT5407 has one completed clinical trial, identified as NCT05553301. This Phase 1 study evaluated the safety and immunogenicity of the vaccine in adult participants aged 18 years and older. The trial enrolled 560 participants and was conducted in the United States and Puerto Rico.

Is Quadrivalent Influenza mRNA Vaccine MRT5407 the same as MRT5407?

Yes, Quadrivalent Influenza mRNA Vaccine MRT5407 is also known as MRT5407. The vaccine is being developed by Sanofi for influenza immunization. In clinical trial records, it is referred to by the name MRT5407, which is the same investigational vaccine.