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About
The purpose of this study is to evaluate the safety and immunogenicity of a single intramuscular (IM) injection of different formulations of Quadrivalent Influenza Vaccine (QIV) messenger ribonucleic acid (mRNA) (MRT5421, MRT5424, and MRT5429) compared to an active control (QIV- standard dose (SD), QIV- high dose (HD) [adults ≥ 65 years of age only], or quadrivalent recombinant influenza vaccine (RIV4)) in adults 18 years of age and older.
Full description
Study duration per participant is approximately 12 months.
Enrollment
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Inclusion and exclusion criteria
Inclusion Criteria: - Aged from 18 years on the day of inclusion or aged from 21 years on the days of inclusion, depending on the countries.
A female participant is eligible to participate if she is not pregnant or breastfeeding and one of the following conditions applies:
A female participant of childbearing potential must have a negative highly sensitive pregnancy test (urine or serum as required by local regulation) within 8 hours before the 1st dose of study intervention Exclusion Criteria: Participants are excluded from the study if any of the following criteria apply:
Known or suspected congenital or acquired immunodeficiency; or receipt of immunosuppressive therapy, such as anti-cancer chemotherapy or radiation therapy, within the preceding 6 months; or long-term systemic corticosteroid therapy (prednisone or equivalent for more than 2 consecutive weeks within the past 3 months)
Known systemic hypersensitivity to any of the study intervention components (eg, polyethylene glycol, polysorbate); history of a life-threatening reaction to the study interventions used in the study or to a product containing any of the same substances; any allergic reaction (eg, anaphylaxis) after administration of mRNA vaccine
Previous history of myocarditis, pericarditis, and / or myopericarditis
Known history of previous episodes of Gillian-Barre Syndrome (GBS), neuritis (including Bell's palsy), convulsions, encephalitis, transverse myelitis, and vasculitis
Participants with an ECG that is consistent with possible myocarditis or pericarditis or, in the opinion of the investigator, demonstrates clinically relevant abnormalities that may affect participant safety or study results
Self-reported thrombocytopenia, contraindicating Intramuscular vaccination based on Investigator's judgment
Bleeding disorder, or receipt of anticoagulants in the 3 weeks preceding inclusion, contraindicating Intramuscular vaccination based on Investigator's judgment
Chronic illness that, in the opinion of the Investigator, is at a stage where it might interfere with study conduct or completion
Moderate or severe acute illness / infection (according to Investigator's judgment) or febrile illness (temperature ≥ 38.0°C [≥ 100.4°F]) on the day of vaccination. A prospective participant should not be included in the study until the condition has resolved or the febrile event has subsided
Participant who had acute infection symptoms or a positive SARS-CoV-2 RT-PCR or antigen test in the past 10 days prior to the 1st visit (V01)
Receipt of any vaccine in the 4 weeks preceding study intervention administration or planned receipt of any vaccine in the 4 weeks following study intervention administration
Receipt of immune globulins, blood or blood-derived products in the past 3 months
Previous vaccination against influenza in the previous 6 months with an investigational or marketed vaccine
Receipt of any mRNA vaccine/product in the 2 months preceding study intervention administration NOTE: The above information is not intended to contain all considerations relevant to a patient's potential participation in a clinical trial.
Primary purpose
Allocation
Interventional model
Masking
910 participants in 10 patient groups
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Central trial contact
Trial Transparency email recommended (Toll free for US & Canada)
Data sourced from clinicaltrials.gov
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