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Sorrento Therapeutics Announces First Subject Dosed in a Phase I Clinical Study of STI-1558, an Oral Mpro Inhibitor as a Standalone Treatment and Prevention of COVID-19 Without Co-Administration of Ritonavir Booster

STI-1558, an oral SARS-CoV-2 main protease inhibitor, is specifically designed as a standalone treatment and prevention of COVID-19 without the co-administration of ritonavir as a booster for CYP3A4 inhibition. STI-1558 is also a Cathepsin L inhibitor,