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COMPLETED
NCT06602531
PHASE1/PHASE2

Safety and Immunogenicity Study of Self-Amplifying RNA Pandemic Influenza Vaccine in Adults

Sponsor: Arcturus Therapeutics, Inc.

View on ClinicalTrials.gov

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

Interventions

BIOLOGICAL

ARCT-2304

Each participant will receive 2-dose regimen intramuscular (IM) dose into the deltoid muscle.

BIOLOGICAL

Control vaccine younger adults

Each participant will receive one intramuscular (IM) dose into the deltoid muscle.

BIOLOGICAL

Control vaccine older adults

Each participant will receive one intramuscular (IM) dose into the deltoid muscle.

OTHER

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