Influenza, Human Clinical Trial
Official title:
Phase 2 Clinical Trial to Confirm the Dose and Formulation of a Recombinant Quadrivalent Nanoparticle Influenza Vaccine (Quad-NIV) With or Without Matrix-M1™ Adjuvant in Healthy Adults ≥ 65 Years of Age
A Phase 2 trial to confirm the dose and formulation, demonstrate adjuvant effect, and evaluate the safety and tolerability of a single intramuscular injection of Quad-NIV with or without Matrix-M1 adjuvant in healthy adults ≥ 65 years of age. A total of approximately 1375 subjects were to be randomized to seven treatment groups to receive Quad-NIV or an active comparator.
This randomized, observer-blind, active-controlled, Phase 2 trial was conducted at multiple sites. The composition of the Quad-NIV Influenza Vaccines used in this trial included recombinant H1, H3, and two B hemagglutinin proteins for the 2018-2019 Northern Hemisphere influenza virus strains. Approximately 1375 healthy male and female subjects ≥ 65 years were randomized into 7 treatment groups (group A to group G), receiving various formulations of Quad-NIV, with or without Matrix-M1 adjuvant or one of two active comparator influenza vaccines. Within each site, randomization was stratified by history of receipt of 2017-2018 influenza vaccine. Subjects received two injections 28 days apart. On Day 0, subjects received one of the five Quad-NIV formulations or one of the two comparator influenza vaccines. On Day 28, subjects received either placebo or a licensed influenza vaccine rescue dose, depending on his or her initial randomization. Subjects were followed for safety for approximately 6 months, with primary immunogenicity results at Day 28. ;
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