Nirmatrelvir (PF-07321332) is an orally bioavailable 3C-like protease (3CL) inhibitor that is the subject of clinical trial NCT04756531. 3CL is responsible for cleaving polyproteins 1a and 1ab of SARS-CoV-2. Without the activity of the SARS-CoV-2 3CL, nonstructural proteins (including proteases) cannot be released to perform their functions, inhibiting viral...
In the US, Europe, and Canada, nirmatrelvir, in combination with ritonavir, is indicated for the treatment of mild-to-moderate coronavirus disease 2019 (COVID-19) in adults who are at high risk for progression to severe COVID-19, including hospitalization or death. In Europe, this therapeutic indication is approved under conditional marketing authorization.
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