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Invivyd Announces Completion of Enrollment in Upsized DECLARATION Clinical Trial, a Phase 3 Pivotal Study of VYD2311, an Investigational Antibody to Prevent COVID

$IVVDPress releaseJun 1, 2026, 7:01 AM ETRead the release

Invivyd announced the completion of enrollment in its DECLARATION Phase 3 pivotal trial for VYD2311, a monoclonal antibody candidate for COVID-19 prevention. The trial was upsized by approximately 500 subjects following a pre-specified sample size re-estimation analysis to ensure statistical robustness against variable COVID event rates.

Key figures

Drug Name
VYD2311
Phase Of Trial
Phase 3
Total enrollment
2400
Expected results date
late Q3 2026
Additional subjects added
500

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