GSK Moves mRNA Flu Vaccine to Phase 3

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GSK says it is moving its mRNA seasonal influenza vaccine program into Phase 3 after reporting favorable Phase 2 data that demonstrated positive A and B strain immune responses relative to standard of care in both younger and older adults. “Interim data suggest the vaccine candidates have an acceptable safety and reactogenicity profile for all mRNA formulations tested,” the company says.

The study assessed the “reactogenicity, safety, and immunogenicity of different dose levels of a modified, multivalent vaccine candidate, encoding antigens matched to all three WHO-recommended influenza strains,” according to the company. The study included 250 healthy younger adults aged 18 to 64 and 250 healthy older adults aged 65 to 85, it says, adding that in each age group, different dose levels were tested and compared to a licensed comparator vaccine.

GSK says it recently signed a new licensing agreement with CureVac to assume full control of developing and manufacturing influenza and Covid-19 candidate vaccines.

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