Cleveland-based Sator Therapeutics develops naturally occurring, non-pathogenic oncolytic viruses intended to selectively kill cancer cells in hard-to-treat tumors. Its preclinical platform combines a library of nearly 30 human enterovirus strains with systemic delivery, sequential dosing, companion diagnostics, and a patented dendritic-cell carrier. The company’s approach is protected by four issued U.S. patents and a Japanese patent, while its lead mesothelioma program advances toward formal clinical development.