Question · Q4 2025
Eric asked about the expectations for the Group A Streptococcus (VAX-A1) program, including development plans, accepted immunogenicity standards, and the likelihood of an efficacy trial for Phase 3 submission.
Answer
Grant Pickering, CEO of Vaxcyte, expressed excitement about resuming VAX-A1 development. Jim Wassil, EVP and COO, outlined plans to start with an adult Phase 1 study assessing safety and immunogenicity (IGA and IgG in serum and saliva). He noted there's no correlate of protection but a small study could provide early proof of concept before Phase 3.
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