Cocrystal Pharma’s COVID-19 Oral and Intranasal/Pulmonary Protease Inhibitors Exhibit Powerful In Vitro Potency Against the SARS-CoV-2 Omicron Variant

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[{"type":"text","content":"Antiviral activity now confirmed against SARS-CoV-2 and all variants of concernincluding Omicron, Delta, Alpha, Beta and Gamma BOTHELL, Wash., Dec. 22, 2021 (GLOBE NEWSWIRE) -- Cocrystal Pharma, Inc. (Nasdaq: COCP) (“Cocrystal” or the “Company”) announces that in vitro studies demonstrate its oral and intranasal/pulmonary SARS-CoV-2 main protease inhibitors exhibit antiviral potency against the Omicron variant. The Company earlier confirmed that its protease inhibitors demonstrated broad-spectrum antiviral activity against SARS-CoV-2 and all major previously identified variants including Delta, Alpha, Beta and Gamma. Cocrystal expects to initiate Phase 1 clinical studies with its COVID-19 intranasal/pulmonary protease inhibitor CDI-45205 and an oral COVID-19 protease inhibitor as rapidly as possible. To confirm the antiviral activity of its protease inhibitors against SARS-CoV-2 Omicron variant, Cocrystal conducted an analysis of SARS-CoV-2 lineages covering all reported Omicron variant sequences including those from South Africa, Europe, Asia and North America, and identified one prevalent mutation in the SARS-CoV-2 main protease. Using its proprietary platform technology and assays, the Company further confirmed in vitro antiviral activity of its protease inhibitors against the Omicron variant. “Our ability to develop highly sensitive in vitro assays and X-ray crystals within a month is particularly important to evaluate the broad-spectrum activity of our SARS-CoV-2 main protease inhibitors against a heavily mutated Omicron variant,” said Sam Lee, Ph.D., Cocrystal’s President and interim co-CEO. “Our protease inhibitors bind to a highly conserved region of the active site of the protease that is required for SARS-CoV-2 viral replication. We believe that, due to their novel mechanism of action, our protease inhibitors will be effective against newly emerging SARS-CoV-2 variants. We are also highly encouraged by promising safety profiles of our SARS-CoV-2 oral protease inhibitors from 7-day mouse oral dosing toxicity studies. Our goal is to rapidly advance two protease inhibitors into first-in-human studies as rapidly as possible.” “Omicron has been identified as a variant of concern by both the U.S. Centers for Disease Control and Prevention (CDC) and the World Health Organization (WHO), and is spreading rapidly. Since being id...

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