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Safety and Immunogenicity Study of Self-Amplifying RNA Pandemic Influenza Vaccine in Adults
Sponsor: Arcturus Therapeutics, Inc.
Summary
The goal of this clinical trial is to evaluate the safety and immune responses of three different dose levels a self-amplifying RNA pandemic influenza vaccine (ARCT-2304) in adults. The key objectives of the study are: * To evaluate safety and reactogenicity of different dose levels of the ARCT-2304 vaccine * To describe the Immune responses of different dose levels of the ARCT-2304 vaccine as measured by hemagglutination inhibition (HAI) and neuraminidase enzyme-linked lectin (ELLA) antibody responses Researchers will compare the results with licensed influenza vaccines to select the most optimal dose level and schedule for vaccine administration in terms of safety and immunogenicity for further development of the vaccine. Participants will receive 2 doses of the ARCT-2304 vaccine or 1 dose of licensed influenza vaccine and 1 dose of placebo. They will be asked: * to complete a daily diary for 7 days after each vaccination, answering questions how they have been feeling on that day. * to provide blood samples at each visit in the clinic * to comply with all study visits and procedures (e.g., be available for planned telephone contacts and unscheduled clinic visits, if required)
Official title: A Phase 1, First-in-human, Randomized, Observer-blind, Parallel Design, Controlled, Dose Level and Schedule-finding Study to Evaluate the Safety, Reactogenicity, and Immunogenicity of a Self-Amplifying mRNA Pandemic Influenza Vaccine (ARCT-2304) When Administered to Healthy Adults
Key Details
Gender
All
Age Range
18 Years - 80 Years
Study Type
INTERVENTIONAL
Enrollment
212
Start Date
2024-12-10
Completion Date
2025-12-05
Last Updated
2026-09-04
Healthy Volunteers
Yes
Conditions
Interventions
ARCT-2304
Each participant will receive 2-dose regimen intramuscular (IM) dose into the deltoid muscle.
Control vaccine younger adults
Each participant will receive one intramuscular (IM) dose into the deltoid muscle.
Control vaccine older adults
Each participant will receive one intramuscular (IM) dose into the deltoid muscle.
Placebo Vaccine
Each participant will receive one intramuscular (IM) dose into the deltoid muscle.
Locations (4)
Velocity Clinical Research
La Mesa, California, United States
Velocity Clinical Research
San Bernardino, California, United States
Tekton Research
Longmont, Colorado, United States
CTI Clinical Research Center
Cincinnati, Ohio, United States