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Effect of Regdanvimab on Mortality in Patients Infected with SARS-CoV-2 Delta Variants: A Propensity Score-Matched Cohort Study

Hwang et al., Infectious Diseases and Therapy, doi:10.1007/s40121-024-00971-w
Apr 2024  
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Mortality 83% Improvement Relative Risk Mortality, day 30 92% Ventilation 0% ICU admission 33% Oxygen therapy 55% Regdanvimab  Hwang et al.  EARLY TREATMENT Is early treatment with regdanvimab beneficial for COVID-19? Retrospective 378 patients in South Korea (May 2021 - January 2022) Lower need for oxygen therapy with regdanvimab (p=0.01) c19early.org Hwang et al., Infectious Diseases and .., Apr 2024 Favorsregdanvimab Favorscontrol 0 0.5 1 1.5 2+
35th treatment shown to reduce risk in March 2022, now with p < 0.00000000001 from 11 studies, recognized in 27 countries. Efficacy is variant dependent.
No treatment is 100% effective. Protocols combine treatments.
5,300+ studies for 116 treatments. c19early.org
PSM retrospective 378 hospitalized COVID-19 patients in Korea showing lower progression with regdanvimab treatment.
Efficacy is variant dependent. In Vitro research suggests a lack of efficacy for omicron BA.2, BA.4, BA.51, ХВВ.1.9.1, XBB.1.9.3, XBB.1.5.24, XBB.1.16, XBB.2.9, BQ.1.1.45, CL.1, and CH.1.12.
risk of death, 83.3% lower, RR 0.17, p = 0.12, treatment 1 of 189 (0.5%), control 6 of 189 (3.2%), NNT 38.
risk of death, 92.3% lower, RR 0.08, p = 0.03, treatment 0 of 189 (0.0%), control 6 of 189 (3.2%), NNT 32, relative risk is not 0 because of continuity correction due to zero events (with reciprocal of the contrasting arm), day 30.
risk of mechanical ventilation, no change, RR 1.00, p = 1.00, treatment 1 of 189 (0.5%), control 1 of 189 (0.5%).
risk of ICU admission, 33.3% lower, RR 0.67, p = 0.49, treatment 8 of 189 (4.2%), control 12 of 189 (6.3%), NNT 47.
risk of oxygen therapy, 54.8% lower, RR 0.45, p = 0.01, treatment 14 of 189 (7.4%), control 31 of 189 (16.4%), NNT 11.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
Hwang et al., 12 Apr 2024, retrospective, South Korea, peer-reviewed, 13 authors, study period 26 May, 2021 - 30 January, 2022. Contact: ktkwon@knu.ac.kr, changhee@gnu.ac.kr.
This PaperRegdanvimabAll
Effect of Regdanvimab on Mortality in Patients Infected with SARS-CoV-2 Delta Variants: A Propensity Score-Matched Cohort Study
Soyoon Hwang, Nan Young Lee, Eunkyung Nam, Yu Kyung Kim, Shin-Woo Kim, Hyun-Ha Chang, Yoonjung K Kim, Sohyun Bae, Juhwan Jeong, Jae-Ho Shin, Guehwan Jang, Changhee Lee, Ki Tae Kwon
Infectious Diseases and Therapy, doi:10.1007/s40121-024-00971-w
Introduction: Regdanvimab, a monoclonal antibody pharmaceutical, is the first Korean drug approved for treating coronavirus disease 2019 . We analyzed the therapeutic efficacy of regdanvimab in patients with the COVID-19 delta variant infection. Methods: We retrospectively reviewed the electronic medical records of patients hospitalized at two Korean tertiary COVID-19 hospitals with COVID-19 delta variant infection between May 26, 2021, and January 30, 2022. To analyze the therapeutic efficacy of regdanvimab, the patients were divided into regdanvimab and non-regdanvimab groups and were 1:1 propensity-score (PS)-matched on age, severity at admission, and COVID-19 vaccination history. Results: Of 492 patients, 262 (53.3%) and 230 (46.7%) were in the regdanvimab and non-regdanvimab groups, respectively. After PS matching the groups on age, severity at admission, and COVID-19 vaccination history, each group comprised 189 patients. The 30-day hospital
Publisher's Note Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
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Please send us corrections, updates, or comments. c19early involves the extraction of 100,000+ datapoints from thousands of papers. Community updates help ensure high accuracy. Treatments and other interventions are complementary. All practical, effective, and safe means should be used based on risk/benefit analysis. No treatment or intervention is 100% available and effective for all current and future variants. We do not provide medical advice. Before taking any medication, consult a qualified physician who can provide personalized advice and details of risks and benefits based on your medical history and situation. FLCCC and WCH provide treatment protocols.
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