Invivyd and the SPEAR Study Group Announce Initiation of “FLINTLOCK” Phase 2 Study of VYD2311, a Monoclonal Antibody for the Potential Treatment of Long COVID or Post-Vaccination Syndrome
NEW HAVEN, Conn., Oct. 14, 2026 (GLOBE NEWSWIRE) -- Invivyd, Inc. (Nasdaq: IVVD) and the SPEAR Study Group today announced the initiation of FLINTLOCK, a Phase 2 clinical trial evaluating the safety, tolerability, pharmacokinetics, and clinical efficacy of high-dose monoclonal antibody VYD2311 in individuals with Long COVID or Post-Vaccination Syndrome (PVS), also known as COVID vaccine injury.