Cocrystal Pharma receives IND clearance for challenge study of CDI-988

Cocrystal Pharma (COCP) announces that the Company received a Study May Proceed Letter from the U.S. Food and Drug Administration to conduct a Phase 1b challenge study evaluating CDI-988 for the prevention and treatment of norovirus infections. Cocrystal’s oral broad-spectrum antiviral candidate CDI-988 represents a potential breakthrough for norovirus – the most common cause of acute viral gastroenteritis. The Phase 1b challenge study is planned to begin before year-end 2025. CDI-988 is a novel pan-viral 3CL protease inhibitor developed for the treatment of norovirus and coronavirus infections. Preclinical data demonstrate that CDI-988 exhibits broad-spectrum antiviral activity by targeting a highly conserved region in the active site of the viral proteases. CDI-988 has shown effectiveness against major norovirus proteases including the prevalent GII.4 and GII.17. Data from the Phase 1 study showed oral CDI-988 to be well tolerated with a favorable safety profile. Currently, there are no approved vaccines or therapeutics for norovirus infections.