Top-line interim phase I/II data from Icosavax Inc.’s virus-like particle COVID-19 vaccine fell short of company and market expectations. IVX-411, which displays the SARS-CoV-2 receptor binding domain, was found to be immunogenic and well-tolerated, but the level of immune response was lower than anticipated and inconsistent with data on Icosavax’s platform and its preclinical results.
A multimillion dollar windfall for Icosavax Inc. will help allow the company to launch a COVID-19 vaccination program using its virus-like particle candidate (VLP), IVX-411, that displays the SAR-CoV-2 receptor-binding domain.