CI

At a glance

ClinicalIndex Comparison Record
Phase 2Completed· 1,271 enrolled
Drug / intervention
V181 High-Potency Level +3 morebiological
Likely dose
0.5 mL subcutaneous dose of V181 (High-, Mid-, or Low-Potency Level) or placeboAI-extracted
Key inclusion· 1
  • Healthy adult males and females willing to comply with contraception/abstinence requirements for 90 days post-vaccination
Key exclusion· 15
  • Known history of dengue or zika natural infection
  • Acute febrile illness (temperature ≥38.0°C [≥100.4°F]) within 72 hours before vaccination
  • Serious or progressive disease including cancer, uncontrolled diabetes, severe cardiac/renal/hepatic insufficiency, or systemic autoimmune/neurologic disorder
  • Known or suspected immunocompromise, including HIV infection, hematologic malignancy, or treatment for autoimmune disease

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT05507450
NCT05507450Phase 2Completed

A Phase 2, Randomized, Double-Blind, Multicenter Study to Evaluate the Safety and Immunogenicity of Three Different Potency Levels of V181 (Dengue Quadrivalent Vaccine rDENVΔ30 [Live, Attenuated]) in Healthy Adults

Merck Sharp & Dohme LLC·interventional·Posted Aug 19, 2022·Updated May 9, 2025

In Brief

A Phase 2 clinical trial evaluating V181 High-Potency Level, V181 Mid-Potency Level, and 2 other interventions for Dengue Disease and Dengue Virus. Completed, enrolled 1,271 participants across 32 sites in 7 countries.

Detailed Summary

The primary objective of this study is to compare the dengue virus-neutralizing antibody geometric mean titers (GMTs) for each of the 4 dengue serotypes (DENV1, DENV2, DENV3, and DENV4) at Day 28 post-vaccination for participants administered the V181 Low-Potency Level vaccine versus the V181 Mid-Potency Level vaccine. This study will also evaluate the safety and tolerability of 3 different V181 potency level vaccines. The primary hypothesis of the study is that the V181 Low-Potency Level vaccine is non-inferior to the V181 Mid-Potency Level vaccine for each of the 4 dengue serotypes based on GMTs at Day 28 post-vaccination.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesAustralia, Canada, Finland, Germany, Israel, Taiwan, United States
Collaborators--

Timeline

Phase 2CompletedFinished
2023202420252026
First PostedAug 19, 2022
Enrollment StartSep 7, 2022
Primary CompletionJun 5, 2023
Study CompletionMay 7, 2024
TodayJul 2, 2026
Enrollment to primary: 9 monthsPosted 3.9 years ago

Interventions

V181 High-Potency Levelbiological

0.5 mL SC dose of V181 High-Potency vaccine

V181 Mid-Potency Levelbiological

0.5 mL SC dose of V181 Mid-Potency vaccine

V181 Low-Potency Levelbiological

0.5 mL SC dose of V181 Low-Potency vaccine

Placebobiological

0.5 mL SC dose of placebo