CI

At a glance

ClinicalIndex Comparison Record
Phase 2Completed· 471 enrolled
Drug / intervention
Investigational aIIV4c +3 morebiological
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

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

Search/NCT04576702
NCT04576702Phase 2Completed

A Phase 2, Randomized, Stratified, Observer-Blind Clinical Study to Evaluate Safety and Immunogenicity of an MF59-Adjuvanted Quadrivalent Subunit Inactivated Influenza Vaccine in Older Adults

Seqirus·interventional·Posted Oct 6, 2020·Updated Apr 17, 2024

In Brief

A Phase 2 clinical trial evaluating Investigational aIIV4c, IIV4c, and 2 other interventions for Influenza and Human. Completed, enrolled 471 participants across 21 sites.

Detailed Summary

This Phase 2, randomized, observer-blind, active controlled clinical study is evaluating the safety and immunogenicity of the investigational MF59-Adjuvanted Quadrivalent Subunit Inactivated Influenza Vaccine. Approximately 480 subjects are to be randomized into 1 of 4 possible treatment groups (investigational Influenza Vaccine or licensed Quadrivalent Influenza Vaccine comparators) at 120 participants per group. Every participant will receive an influenza vaccine injection on Day 1 and will be followed up for approximately 6 months following injection. The primary immunogenicity analysis is based on Day 29 serum.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
ConditionsInfluenza, Human
CountriesUnited States
Collaborators--

Timeline

Phase 2CompletedFinished
202120222023202420252026
First PostedOct 6, 2020
Enrollment StartOct 8, 2020
Primary CompletionMar 19, 2021
Study CompletionMay 24, 2021
TodayJul 2, 2026
Enrollment to primary: 5 monthsPosted 5.7 years ago

Interventions

Investigational aIIV4cbiological

Investigational MF59 Adjuvanted Cell-derived Quadrivalent Influenza vaccine, containing four influenza virus strains (A/H1N1, A/H3N2, B/Yamagata and Victoria lineage) recommended by the WHO (World Health Organization) for quadrivalent vaccines for the respective season.

IIV4cbiological

Licensed, Non-adjuvanted, Cell-derived Quadrivalent Influenza Vaccine containing four influenza virus strains (A/H1N1, A/H3N2, B/Yamagata and Victoria lineage) recommended by the WHO for quadrivalent vaccines for the respective season.

aIIV4biological

Licensed, MF59-Adjuvanted, egg-derived Quadrivalent Influenza Vaccine containing four influenza virus strains (A/H1N1, A/H3N2, B/Yamagata and Victoria lineage) recommended by the WHO for quadrivalent vaccines for the respective season.

RIV4biological

Licensed, Recombinant Quadrivalent Influenza Vaccine containing four influenza virus strains (A/H1N1, A/H3N2, B/Yamagata and Victoria lineage) recommended by the WHO for quadrivalent vaccines for the respective season.