Data from two phase I studies from Prelude Therapeutics Inc. helped open the American Association for Cancer Research virtual International Conference on Molecular Targets and Cancer Therapeutics on Oct. 7 but tugged the company’s stock sharply downward.

Brii Biosciences Ltd. shared interim data from a phase III trial of its neutralizing monoclonal antibody (mAb) combination therapy for SARS-CoV-2, BRII-196 and BRII-198, that showed a 78% reduction in the risk of hospitalization or death in patients receiving single dose of the cocktail.