ArticleInfectious diseases and therapy2024
Safety, Efficacy and Pharmacokinetics of AZD7442 (Tixagevimab/Cilgavimab) for Treatment of Mild-to-Moderate COVID-19: 15-Month Final Analysis of the TACKLE Trial.
Article in Infectious diseases and therapy, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT04723394 (A Phase III Randomized, Double-blind, Placebo-controlled, Multicenter Study to Determine the Safety and Efficacy of AZD7442 for the Treatment of COVID-19 in Non-hospitalized Adults), which is not on this map. Cited by 5 papers.
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The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
A Phase III Randomized, Double-blind, Placebo-controlled, Multicenter Study to Determine the Safety and Efficacy of AZD7442 for the Treatment of COVID-19 in Non-hospitalized Adults
Who cites it
5 citing papers in PubMed, 4 citations in OpenAlex.
- Pharmacokinetic Comparability Assessment of Tixagevimab and Cilgavimab Developed for COVID-19 Prevention and Treatment Using Standard Exposure Metrics and Partial Area Under the Curve.Clinical pharmacokinetics · 2026Trial
- Safety and Pharmacokinetics of Repeat Dosing of Long-Acting SARS-CoV-2 Antibodies Tixagevimab/Cilgavimab (AZD7442): Results from the PROVENT Sub-study.Clinical drug investigation · 2026Trial
- Safety, Tolerability, and Pharmacokinetics of the Long-Acting SARS-CoV-2-Neutralizing Monoclonal Antibody Combination AZD7442 (Tixagevimab/Cilgavimab) in Healthy Chinese Adults.Clinical pharmacology in drug development · 2025Trial
- Safety and Pharmacokinetics of Long-Acting Monoclonal Antibodies Tixagevimab and Cilgavimab (AZD7442) in a China Phase 2 Study and Evaluation of Asian Race Effect.Clinical pharmacology in drug development · 2025Trial
- Safety, Pharmacokinetics, and Predicted Neutralizing Activity of the SARS-CoV-2 Monoclonal Antibody Sipavibart: Results from Little DIPPER and the SUPERNOVA Substudy.Infectious diseases and therapy · 2026Article
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Authors and funding
11 authors at 6 institutions in 6 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
introductionIn the phase 3 TACKLE study, outpatient treatment with AZD7442 (tixagevimab/cilgavimab) was well tolerated and significantly reduced progression to severe disease or death through day 29 in adults with mild-to-moderate coronavirus disease 2019 (COVID-19) at the primary analysis. Here, we report data from the final analysis of the TACKLE study, performed after approximately 15 months' follow-up.
methodsEligible participants were randomized 1:1 and dosed within 7 days of symptom onset with 600 mg intramuscular AZD7442 (n = 456; 300 mg tixagevimab/300 mg cilgavimab) or placebo (n = 454).
resultsSevere COVID-19 or death through day 29 occurred in 4.4% and 8.8% of participants who received AZD7442 or placebo, a relative risk reduction (RRR) of 50.4% [95% confidence interval (CI) 14.4, 71.3; p = 0.0096]; among participants dosed within 5 days of symptom onset, the RRR was 66.9% (95% CI 31.1, 84.1; p = 0.002). Death from any cause or hospitalization for COVID-19 complications or sequelae through day 169 occurred in 5.0% of participants receiving AZD7442 versus 9.7% receiving placebo, an RRR of 49.2% (95% CI 14.7, 69.8; p = 0.009). Adverse events occurred in 55.5% and 55.9% of participants who received AZD7442 or placebo, respectively, and were mostly mild or moderate in severity. Serious adverse events occurred in 10.2% and 14.4% of participants who received AZD7442 or placebo, respectively, and deaths occurred in 1.8% of participants in both groups. Serum concentration-time profiles recorded over 457 days were similar for AZD7442, tixagevimab, and cilgavimab, and were consistent with the extended half-life reported for AZD7442 (approx. 90 days).
conclusionsAZD7442 reduced the risk of progression to severe COVID-19, hospitalization, and death, was well tolerated through 15 months, and exhibited predictable pharmacokinetics in outpatients with mild-to-moderate COVID-19. These data support the long-term safety of using long-acting monoclonal antibodies to treat COVID-19.
trial registrationClinicaltrials.gov, NCT04723394. ( https://clinicaltrials.gov/study/NCT04723394 .
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