Exelixis Announces Data From Zanzalintinib+Atezolizumab Study, Stock Drops In Pre-Market

Core Insights - Exelixis, Inc. announced positive data from the STELLAR-303 trial, showing that the combination of zanzalintinib and atezolizumab improved median overall survival for metastatic colorectal cancer patients compared to regorafenib [1][2] - The combination therapy resulted in a median overall survival of 10.9 months, compared to 9.4 months for regorafenib, and reduced the risk of death by 20 percent in the intention-to-treat population [1] - The 12- and 24-month survival rates for the combination therapy were 46 percent and 20 percent, respectively, compared to 38 percent and 10 percent for regorafenib [2] - The safety profiles of both treatment regimens were consistent with previous observations [2] - The lead investigator noted that the combination therapy has shown consistent benefits across key patient subgroups [3] - Exelixis plans to submit its first new drug application for zanzalintinib by the end of the year [3] - Following the announcement, Exelixis' stock price decreased by 8.28 percent to $36 in pre-market trading [3]