Invivyd Selects VBY329 as Potential Best-In-Class RSV Antibody Candidate.

Monday, Nov 24, 2025 11:20 am ET1min read

Invivyd announces the selection of potential best-in-class RSV antibody candidate VBY329, targeting IND readiness in 2H 2026. VBY329 is designed to prevent RSV infections in newborns, infants, and children, and has shown higher potency and improved barrier to resistance compared to standard of care RSV medicines. Its antiviral potency is 1.5-fold greater on average than nirsevimab and 1.2-fold greater on average than clesrovimab against established authentic RSV strains.

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