Astrazeneca plc, which seemed to have backed away from vaccine development after the COVID-19 pandemic, clearly took a shine to Icosavax Inc.’s virus-like particle technology and signed a deal to take over the firm for as much as $1.1 billion.
While pricing a $67.8 million registered direct offering, Icosavax Inc. also released positive top-line interim data from a phase I study of IVX-A12 against respiratory syncytial virus (RSV) and human metapneumovirus in older adults.
With GSK plc’s Arexvy approved in the U.S. as the first respiratory syncytial virus (RSV) vaccine, several other developers are lining up for what in five years could be a $10 billion market. Their aim is to provide lasting protection for those most susceptible to the endemic virus, particularly young children and those older than 60. Behind GSK is Pfizer Inc. with PF-06928316, which has a U.S. FDA PDUFA date set for this month, and Sanofi SA’s nirsevimab, for which FDA action is expected in the third quarter.
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.