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V181 High-Potency Level

Phase 2

Dengue Disease | Monoclonal antibody | Infectious Disease |Merck & Company, Inc.|Last Updated: May 9, 2025

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-BlindPLACEBO_CONTROLLEDDMCBiomarker
Total Trials1
Total Enrollment1,271
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05507450Safety and Immunogenicity of Three V181 Dengue Vaccine Potencies in Adults (V181-003)PHASE2 COMPLETED 1,271Sep 7, 2022May 7, 2024May 9, 202532 United States, Australia +5
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Study Endpoints
Primary Endpoints
Dengue Virus-Neutralizing Antibody Titers, as Measured by Virus Reduction Neutralization Test (VRNT)
Day 28 post-vaccination

A dengue VRNT was conducted to assess neutralizing antibody Geometric Mean Titers (GMTs) for each of the 4 dengue vaccine serotypes (DENV1, DENV2, DENV3, and DENV4) in specimens collected from participants on Day 28 post-vaccination.

Percentage of Participants With Vaccine-Related Serious Adverse Events (SAEs)
Up to 28 days post-vaccination

An SAE is an AE that results in death, is life-threatening, requires or prolongs an existing hospitalization, results in persistent or significant disability or incapacity, is a congenital anomaly or birth defect, or is another important medical event deemed such by medical or scientific judgment. Relatedness of an SAE to the study vaccine will be determined by the investigator.

Secondary Endpoints
Percentage of Participants With Solicited Injection-Site Adverse Events (AEs)
Up to 5 days post-vaccination
Percentage of Participants With Solicited Systemic AEs
Up to 28 days post-vaccination
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Study Design & Arms
AllocationRANDOMIZED
MaskingDOUBLE
ModelPARALLEL
PurposePREVENTION
Treatment Arms
ArmTypeDescription
V181 High-Potency Level GroupEXPERIMENTALParticipants will receive a single 0.5mL subcutaneous (SC) dose of V181 High-Potency vaccine.
V181 Mid-Potency Level GroupEXPERIMENTALParticipants will receive a single 0.5mL SC dose of V181 Mid-Potency vaccine.
V181 Low-Potency Level GroupEXPERIMENTALParticipants will receive a single 0.5mL SC dose of V181 Low-Potency vaccine.
PlaceboPLACEBO_COMPARATORParticipants will receive a single SC 0.5 mL dose of placebo.
Interventions
NameTypeDescription
V181 High-Potency LevelBIOLOGICAL0.5 mL SC dose of V181 High-Potency vaccine
V181 Mid-Potency LevelBIOLOGICAL0.5 mL SC dose of V181 Mid-Potency vaccine
V181 Low-Potency LevelBIOLOGICAL0.5 mL SC dose of V181 Low-Potency vaccine
PlaceboBIOLOGICAL0.5 mL SC dose of placebo
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Eligibility Criteria
Age Range18 Years — 50 Years
SexALL
Healthy VolunteersYes
Study Sites32

Inclusion Criteria: * Male participants are eligible to participate if they agree to the following for at least 90 days after administration of study intervention: Abstain from heterosexual intercourse as their preferred and usual lifestyle (abstinent on a long term and persistent basis) and agree ...

Countries:United StatesAustraliaCanadaFinlandGermanyIsraelTaiwan
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