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c19early.org COVID-19 treatment researchCasirivimab/imdevimabCasirivimab/i.. (more..)
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All Studies   Meta Analysis    Recent:   
0 0.5 1 1.5 2+ Ventilation 33% Improvement Relative Risk Oxygen therapy 46% Casirivimab/i..  Miyashita et al.  EARLY TREATMENT Is early treatment with casirivimab/imdevimab beneficial for COVID-19? Retrospective 922 patients in Japan Lower need for oxygen therapy with casirivimab/imdevimab (p=0.0044) c19early.org Miyashita et al., J. Infection and Che.., May 2022 Favors casirivimab/im.. Favors control

Clinical efficacy of casirivimab-imdevimab antibody combination treatment in patients with COVID-19 Delta variant

Miyashita et al., Journal of Infection and Chemotherapy, doi:10.1016/j.jiac.2022.05.012
May 2022  
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16th treatment shown to reduce risk in March 2021
 
*, now known with p = 0.000018 from 28 studies, recognized in 42 countries. Efficacy is variant dependent.
No treatment is 100% effective. Protocols combine complementary and synergistic treatments. * >10% efficacy in meta analysis with ≥3 clinical studies.
4,000+ studies for 60+ treatments. c19early.org
Retrospective 461 patients treated with casirivimab/imdevimab in Japan, and 461 matched controls, showing lower oxygen requirements with treatment.
Efficacy is variant dependent. In Vitro research suggests a lack of efficacy for many omicron variants Haars, Liu, Pochtovyi, Sheward, Tatham, VanBlargan.
risk of mechanical ventilation, 33.3% lower, RR 0.67, p = 1.00, treatment 2 of 461 (0.4%), control 3 of 461 (0.7%), NNT 461.
risk of oxygen therapy, 46.4% lower, RR 0.54, p = 0.004, treatment 30 of 461 (6.5%), control 56 of 461 (12.1%), NNT 18.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
Miyashita et al., 26 May 2022, retrospective, Japan, peer-reviewed, 6 authors, average treatment delay 4.0 days.
This PaperCasirivimab/i..All
Clinical efficacy of casirivimab-imdevimab antibody combination treatment in patients with COVID-19 Delta variant
MD Naoyuki Miyashita, Yasushi Nakamori, Makoto Ogata, Naoki Fukuda, Akihisa Yamura, Yoshihisa Ishiura
Journal of Infection and Chemotherapy, doi:10.1016/j.jiac.2022.05.012
This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.
Conflicts of interest The authors declare that they have no conflicts of interest. Author's contributions: All the authors conceived the study, participated in its design and coordination and collected and managed the data, including quality control. NM and YN drafted the manuscript, and all authors contributed substantially to its revision. All the authors read and approved the final manuscript. Ethical approval and consent to participate J o u r n a l P r e -p r o o f
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Weinreich, Sivapalasingam, Norton, Ali, Gao et al., REGN-COV2, a neutralizing antibody cocktail, in outpatients with Covid-19, N Engl J Med
Zhu, Zhang, Li, Yang, Song, A novel coronavirus from patients with pneumonia in China, 2019, N Engl J Med
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