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Safety and Immunogenicity of RSVpreF Coadministered With SIIV in Adults ≥65 Years of Age

Respiratory Syncytial Virus Clinical Trial

Official title:
A PHASE 3, RANDOMIZED, DOUBLE-BLIND, PLACEBO-CONTROLLED STUDY TO EVALUATE THE SAFETY, TOLERABILITY, AND IMMUNOGENICITY OF RESPIRATORY SYNCYTIAL VIRUS PREFUSION F SUBUNIT VACCINE WHEN COADMINISTERED WITH SEASONAL INACTIVATED INFLUENZA VACCINE IN ADULTS ≥65 YEARS OF AGE

Clinical Trial Summary

The purpose of this study is to assess the safety and immunogenicity of RSVpreF when coadministered with SIIV compared to sequential administration of the vaccines when given 1 month apart (SIIV followed by RSVpreF). Additionally, the study will contribute data supporting the development of RSVpreF as a prophylactic vaccine against RSV disease in infants through maternal immunization and in older adults through active vaccination.

Clinical Trial Description

This Phase 3, multicenter, parallel-group, placebo-controlled, randomized, double-blind study will be conducted in Australia and/or another southern hemisphere country. Healthy adults ≥65 years of age will be randomized 1:1 to either the coadministration group (RSVpreF + SIIV)/placebo or the sequential-administration group (placebo + SIIV)/RSVpreF. This study design intends to use a single lot of NIP SIIV that is specifically indicated for use in adults ≥65 years of age. There are 3 scheduled study visits each 1 month apart. To assess immunogenicity, 30 mL blood will be collected prior to vaccination at Visit 1 and Visit 2, and at Visit 3. Local reactions (redness, swelling, and pain at the injection site) occurring at the RSVpreF or placebo injection site (left deltoid) and systemic events (fever, headache, fatigue, nausea, vomiting, diarrhea, muscle pain, and joint pain) occurring within 7 days after each vaccination visit (Visit 1 and Visit 2) will be prompted for and collected daily by the participant in an e-diary device or smartphone app. SIIV injection site reactions will not be routinely collected in the e-diary. AEs and SAEs will be collected from the signing of informed consent through Visit 3. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT05301322
Study type Interventional
Source Pfizer
Contact
Status Completed
Phase Phase 3
Start date April 13, 2022
Completion date October 12, 2022
View Details
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