Recent:Nobori Yoshida.
Ensitrelvir has been officially adopted
in 1 country.
Submit updates/corrections .
Mar 18 |
Ensitrelvir for COVID-19: real-time meta analysis of 3 studies | |
Statistically significant lower risk is seen for viral clearance. 3 studies from 2 independent teams (all from the same country) show statistically significant improvements. Meta analysis using the most serious outcome reported shows.. | ||
Feb 29 |
et al., Antiviral Research, doi:10.1016/j.antiviral.2024.105852 | Prophylactic effect of ensitrelvir in mice infected with SARS-CoV-2 |
Mouse study showing protective effects against SARS-CoV-2 infection in aged mice with the 3CL protease inhibitor ensitrelvir. A single subcutaneous dose of ensitrelvir at 64, 96, or 128 mg/kg given 24 hours before a lethal SARS-CoV-2 chal.. | ||
Feb 6 |
et al., Research Square, doi:10.21203/rs.3.rs-3899998/v1 | Real-world Efficacy of Ensitrelvir in Hospitalized Patients with COVID-19 in Japan: A Retrospective Observational Study |
Retrospective 154 hospitalized COVID-19 patients in Japan showing faster viral clearance and shorter hospitalization with ensitrelvir treatment compared to remdesivir or molnupiravir. There was no significant difference for fever resoluti.. | ||
Dec 31 2023 |
, E., Aging and disease, doi:10.14336/AD.2023.0318 | Mitigating COVID-19 Mortality and Morbidity in China's Aging Population: A Focus on Available Medications and Future Developments |
Review focusing on 3CL protease inhibitors. First generation inhibitors like paxlovid and simnotrelvir require boosting with ritonavir, which can cause drug-drug interactions and other issues. Second generation inhibitors like ensitrelvir.. | ||
Jul 13 2023 |
et al., JAMA Network Open, doi:10.1001/jamanetworkopen.2023.54991 (date from preprint) | Efficacy and Safety of 5-Day Oral Ensitrelvir for Patients With Mild to Moderate COVID-19: The SCORPIO-SR Randomized Clinical Trial |
11% faster recovery (p=0.3) and 49% improved viral clearance (p=0.001). RCT 1,821 COVID-19 outpatients in Japan, Vietnam, and South Korea, showing improved viral clearance and improved recovery (significant for patients treated within 3 days of onset) with ensitrelvir. Only 2 hospitalizations were reported, w.. | ||
Feb 10 2023 |
et al., Journal of Antimicrobial Chemotherapy, doi:10.1093/jac/dkad027 | Efficacy comparison of 3CL protease inhibitors ensitrelvir and nirmatrelvir against SARS-CoV-2 in vitro and in vivo |
In Vitro and animal study comparing nirmatrelvir and ensitrelvir, showing similar efficacy in vitro, and equal or better efficacy of ensitrelvir in vivo (with similar unbound-drug plasma concentrations). | ||
Dec 7 2022 |
et al., Clinical Infectious Diseases, doi:10.1093/cid/ciac933 | Efficacy and safety of ensitrelvir in patients with mild-to-moderate COVID-19: the phase 2b part of a randomized, placebo-controlled, phase 2/3 study |
9% improved recovery (p=0.28) and 32% faster viral clearance (p=0.0001). RCT 428 COVID-19 patients in Japan showing faster viral clearance and improved recovery with ensitrelvir. | ||
May 17 2022 |
et al., medRxiv, doi:10.1101/2022.05.17.22275027 | A Randomized Phase 2/3 Study of Ensitrelvir, a Novel Oral SARS-CoV-2 3C-like Protease Inhibitor, in Japanese Patients With Mild-to-Moderate COVID-19 or Asymptomatic SARS-CoV-2 Infection: Results of the Phase 2a Part |
45% improved viral clearance (p=0.002). RCT 69 patients in in Japan, showing faster viral clearance with ensitrelvir. 5-day ensitrelvir (375mg on day 1 followed by 125 mg daily or 750mg on day 1 followed by 250mg daily). |
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