Drugs / VLA1553
last change Feb 2026 re-read 2 minutes ago

VLA1553

Vaccine

Developed for
chikungunya
Investigated by
Valneva Austria GmbH · Butantan Institute

Trials 5 · a red edge is where a trial was stopped

PhaseRegistry idDatesIndicationSponsorStatusOutcome
Phase 21 trial
Phase 2 NCT06106581 Dec 2023 → Jul 2024 chikungunya Valneva Austria GmbH Completed No outcome recorded
Phase 34 trials
Phase 3 NCT07133178 Feb → Dec 2026 chikungunya Valneva Austria GmbH Withdrawn No outcome recorded
Phase 3 NCT06028841 Apr → Aug 2024 chikungunya Valneva Austria GmbH Withdrawn No outcome recorded
Phase 3 NCT04650399 Feb 2022 → Mar 2023 chikungunya Butantan Institute Completed No outcome recorded
Phase 3 NCT04838444 Apr 2021 → Mar 2023 overdue chikungunya Valneva Austria GmbH Active not recruiting No outcome recorded
Also used as a comparator or background therapy in 3 trials
PhaseRegistry idDatesIndicationSponsorStatusOutcome
Phase 11 trial
Phase 1 NCT03382964 Comparator Mar → Jul 2018 chikungunya Valneva Austria GmbH Completed No outcome recorded
Phase 32 trials
Phase 3 NCT04786444 Comparator Feb → Jul 2021 chikungunya Valneva Austria GmbH Completed No outcome recorded
Phase 3 NCT04546724 Comparator Sep 2020 → May 2021 chikungunya Valneva Austria GmbH Completed No outcome recorded

Evidence & citations 3 cited values

Every value below carries the sentence it was read from. 8 sources stand behind the page.

FieldValueCited text
Known as VLA1553 “Single intramuscular vaccination on Day 1 with VLA1553, a lyophilized live-attenuated Chikungunya vaccine candidate 1x10E4 TCID50 per dose (0.5 mL)” NCT04650399
7

NCT04546724

NCT04838444

NCT06106581

NCT03382964

NCT07133178

NCT04786444

NCT06028841

Modality Vaccine “I.M. vaccination with a live-attenuated Chikungunya virus (CHIKV) vaccine candidate” NCT03382964
Route Intramuscular “Vaccination will be given intramuscularly on Day 0.” NCT03382964