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FLINTLOCK Phase 2 clinical trial will evaluate the safety, tolerability, pharmacokinetics, and clinical efficacy of high-dose monoclonal antibody VYD2311 in adults aged 18-65 years with Long COVID or Post-Vaccination Syndrome, also known as COVID vaccine injuryDesign includes VYD2311 administered in three doses to assess the safety and potential clinical benefit of VYD2311 treatment versus placebo over 90 daysVYD2311 has demonstrated high in vitro antiviral potency across all SARS-CoV-2 variants

The Phase 2 FLINTLOCK clinical trial includes the following study features:Randomized, double-blind, placebo-controlled, proof-of-concept studyTests Invivyd’s monoclonal antibody VYD2311, an investigational monoclonal
Invivyd reported statistically significant Phase 3 safety and tolerability results for VYD2311 compared with an mRNA-based COVID-19 vaccine and said it plans to pursue an Accelerated Approval BLA pending supportive results from its ongoing DECLARATION study. Key Investor TakeawaysInvivyd (NASDAQ:IVVD) said VYD2311 showed significantly lower rates of short-term overall adverse events and systemic adverse events than the mRNA COVID-19 vaccine in the Phase 3 LIBERTY study.

Invivyd, Inc. (IVVD) Discusses LIBERTY Phase III Topline Data and Next Steps for VYD2311 Regulatory Submission September 29, 2026 8:30 AM EDTCompany...

VYD2311 met all primary and secondary endpoints comparing VYD2311 to an mRNA-based COVID-19 vaccine, demonstrating VYD2311 safety and tolerability that is clinically and statistically superior to the safety and tolerability of an mRNA-based COVID-19 vaccineVYD2311 combined with an mRNA-based COVID-19 vaccine demonstrated no interference with vaccine-induced neutralizing titers, and instead added substantially to vaccine-induced neutralizing titersVYD2311 observed profile in LIBERTY indicates hig

2026-09-29. The following slide deck was published by Invivyd, Inc.

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Invivyd continues to expect top-line data from the VYD2311 program around the end of Q3 2026. At that time, Invivyd plans to either unblind the DECLARATION study in its entirety and submit a Biologics License

Mr. Elia has served as Chairman of Invivyd’s Board of Directors since June of 2022; has architected Invivyd’s scientific and corporate strategyAjay Royan, Founder of Mithril Capital and a founding, long-term investor in

