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RSV vaccine formulation 1 dose

Phase 1

Respiratory Syncytial Virus Immunization | Monoclonal antibody | Respiratory |Sanofi|Last Updated: Apr 28, 2026

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedDouble-BlindCONTROLLEDBiomarker
Total Trials1
Total Enrollment240
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT07071558Study to Evaluate the Safety and Immunogenicity of Investigational Vaccines Using the RSV (Respiratory Syncytial Virus) Monovalent Antigen in Healthy Participants 18 to 49 Years of AgePHASE1 COMPLETED 240Jul 14, 2025Mar 17, 2026Apr 28, 20266 Australia
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Study Endpoints
Primary Endpoints
Presence of any unsolicited systemic adverse events (aes)
Within 30 minutes after each vaccine injection

Number of participants experiencing immediate AEs

Presence of solicited injection site reactions (ie, pre-listed in the participant's diary and in the eCRF (electronic case report form)
Through 7 days after each vaccine injection

Number of participants experiencing solicited injection site reactions

Presence of solicited systemic reactions (ie, pre-listed in the participant diary and in the CRF)
Through 7 days after each vaccine injection

Number of participants experiencing solicited systemic reactions

Presence of unsolicited AEs
Day 1 through day 29

Number of participants experiencing unsolicited AEs

Presence of SAEs (Serious Adverse Events) and AESIs (Adverse Events of Special Interest)
Throughout study, approximately 6 months

Number of participants experiencing SAEs and AESIs

Presence of out-of-range biological test results (including shift from baseline values)
Through 7 days after each vaccine injection

number of participants with out-of-range biological tests

RSV A nAb (Neutralizing Antibodies) titers
At day 1 and day 29
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Study Design & Arms
AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposePREVENTION
Treatment Arms
ArmTypeDescription
RSV Formulation 1EXPERIMENTALParticipants will receive a single IM (Intramuscular) injection on day 1 of the RSV vaccines according to their randomization schedule.
RSV Formulation 2EXPERIMENTALParticipants will receive a single IM (Intramuscular) injection on day 1 of the RSV vaccines according to their randomization schedule.
RSV Formulation 3EXPERIMENTALParticipants will receive a single IM (Intramuscular) injection on day 1 of the RSV vaccines according to their randomization schedule.
RSV Formulation 4EXPERIMENTALParticipants will receive a single IM (Intramuscular) injection on day 1 of the RSV vaccines according to their randomization schedule.
RSV Formulation 5EXPERIMENTALParticipants will receive a single IM (Intramuscular) injection on day 1 of the RSV vaccines according to their randomization schedule.
RSV Formulation 6EXPERIMENTALParticipants will receive a single IM (Intramuscular) injection on day 1 of the RSV vaccines according to their randomization schedule.
Control group 1 dose 1EXPERIMENTALParticipants will receive a single IM (Intramuscular) injection on day 1 of the RSV vaccines according to their randomization schedule.
Control group 2 dose 2EXPERIMENTALParticipants will receive a single IM (Intramuscular) injection on day 1 of the RSV vaccines according to their randomization schedule.
Interventions
NameTypeDescription
RSV vaccine formulation 1 doseBIOLOGICALSuspension for injection. Route of administration: IM injection
RSV vaccine formulation 2 doseBIOLOGICALSuspension for injection. Route of administration: IM injection
RSV vaccine formulation 3 doseBIOLOGICALSuspension for injection. Route of administration: IM injection
RSV vaccine formulation 4 doseBIOLOGICALSuspension for injection. Route of administration: IM injection
RSV vaccine formulation 5 doseBIOLOGICALSuspension for injection. Route of administration: IM injection
RSV vaccine formulation 6 doseBIOLOGICALSuspension for injection. Route of administration: IM injection
RSV vaccine formulation 7 doseBIOLOGICALSuspension for injection. Route of administration: IM injection
RSV vaccine formulation 8 doseBIOLOGICALSuspension for injection. Route of administration: IM injection
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Eligibility Criteria
Age Range18 Years — 49 Years
SexALL
Healthy VolunteersYes
Study Sites6

Inclusion Criteria: * Aged 18 to 49 years on the day of inclusion * A female participant is eligible to participate if she is not pregnant or breastfeeding and of the following conditions applies: * Is of NCBP (Non-Child-Bearing Potential). To be considered of NCBP, a female must be post-menopau...

Countries:Australia
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Recent Changes (Last 90 Days)
MEDIUMMay 29, 2026NCT07071558TRIAL_REMOVED: changed
MEDIUMMay 29, 2026NCT07071558TRIAL_REMOVED: changed
MEDIUMMay 29, 2026NCT07071558TRIAL_REMOVED: changed
HIGHMay 26, 2026NCT07071558Status: ACTIVE_NOT_RECRUITING → COMPLETED
LOWMay 24, 2026NCT07071558studyFirstPostDate: changed