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Infect Dis Ther . Outpatient Treatment with AZD7442 (Tixagevimab/Cilgavimab) Prevented COVID-19 Hospitalizations over 6 Months and Reduced Symptom Progression in the TACKLE Randomized Trial

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  • Infect Dis Ther . Outpatient Treatment with AZD7442 (Tixagevimab/Cilgavimab) Prevented COVID-19 Hospitalizations over 6 Months and Reduced Symptom Progression in the TACKLE Randomized Trial

    Infect Dis Ther


    . 2023 Sep 26.
    doi: 10.1007/s40121-023-00861-7. Online ahead of print. Outpatient Treatment with AZD7442 (Tixagevimab/Cilgavimab) Prevented COVID-19 Hospitalizations over 6 Months and Reduced Symptom Progression in the TACKLE Randomized Trial

    F D Richard Hobbs 1 , Hugh Montgomery 2 , Francisco Padilla 3 , Jesus Abraham Simón-Campos 4 , Kenneth Kim 5 , Douglas Arbetter 6 , Kelly W Padilla 7 , Venkatesh Pilla Reddy 8 , Seth Seegobin 9 , Katie Streicher 10 , Alison Templeton 9 , Rolando M Viani 11 , Eva Johnsson 12 , Gavin C K W Koh 13 , Mark T Esser 14



    AffiliationsAbstract

    Introduction: We assessed effects of AZD7442 (tixagevimab/cilgavimab) on deaths from any cause or hospitalizations due to coronavirus disease 2019 (COVID-19) and symptom severity and longer-term safety in the TACKLE adult outpatient treatment study.
    Methods: Participants received 600 mg AZD7442 (n = 452) or placebo (n = 451) ≤ 7 days of COVID-19 symptom onset.
    Results: Death from any cause or hospitalization for COVID-19 complications or sequelae through day 169 (key secondary endpoint) occurred in 20/399 (5.0%) participants receiving AZD7442 versus 40/407 (9.8%) receiving placebo [relative risk reduction (RRR) 49.1%; 95% confidence interval (CI) 14.5, 69.7; p = 0.009] or 50.7% (95% CI 17.5, 70.5; p = 0.006) after excluding participants unblinded before day 169 for consideration of vaccination). AZD7442 reduced progression of COVID-19 symptoms versus placebo through to day 29 (RRR 12.5%; 95% CI 0.5, 23.0) and improved most symptoms within 1-2 weeks. Over median safety follow-up of 170 days, adverse events occurred in 174 (38.5%) and 196 (43.5%) participants receiving AZD7442 or placebo, respectively. Cardiac serious adverse events occurred in two (0.4%) and three (0.7%) participants receiving AZD7442 or placebo, respectively.
    Conclusions: AZD7442 was well tolerated and reduced hospitalization and mortality through 6 months, and symptom burden through 29 days, in outpatients with mild-to-moderate COVID-19.
    Clinical trial registration: Clinicaltrials.gov, NCT04723394. ( https://beta.
    Clinicaltrials: gov/study/NCT04723394 ).

    Keywords: AZD7442; COVID-19; Cilgavimab; Hospitalization; Monoclonal antibodies; SARS-CoV-2; Symptoms; Tixagevimab.

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