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c19early.org COVID-19 treatment researchTixagevimab/cilgavimabTixagev../c.. (more..)
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All Studies   Meta Analysis    Recent:   
0 0.5 1 1.5 2+ Mortality 30% Improvement Relative Risk Recovery 7% primary Tixagevimab/c..  ACTIV-3-TICO  LATE TREATMENT  DB RCT Is late treatment with tixagevimab/cilgavimab beneficial for COVID-19? Double-blind RCT 1,417 patients in the USA (February - September 2021) Lower mortality with tixagevimab/cilgavimab (p=0.032) c19early.org Holland et al., The Lancet Respiratory.., Jul 2022 Favors tixagevimab/ci.. Favors control

Tixagevimab–cilgavimab for treatment of patients hospitalised with COVID-19: a randomised, double-blind, phase 3 trial

Holland et al., The Lancet Respiratory Medicine, doi:10.1016/S2213-2600(22)00215-6, ACTIV-3-TICO, NCT04501978
Jul 2022  
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36th treatment shown to reduce risk in May 2022
 
*, now known with p = 0.000013 from 16 studies, recognized in 30 countries. Efficacy is variant dependent.
Lower risk for mortality, hospitalization, and cases.
No treatment is 100% effective. Protocols combine complementary and synergistic treatments. * >10% efficacy in meta analysis with ≥3 clinical studies.
4,100+ studies for 60+ treatments. c19early.org
RCT with 710 hospitalized patients treated with tixagevimab/cilgavimab, and 707 placebo patients, showing lower mortality with treatment.
Efficacy is variant dependent. In Vitro research suggests a lack of efficacy for omicron BA.2.75.2, BA.4.6, BQ.1.1 Planas, BA.5, BA.2.75, XBB Haars, 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.1.1 Pochtovyi.
risk of death, 30.0% lower, RR 0.70, p = 0.03, treatment 61 of 710 (8.6%), control 86 of 707 (12.2%), NNT 28, day 90.
risk of no recovery, 7.4% lower, RR 0.93, p = 0.21, treatment 710, control 707, inverted to make RR<1 favor treatment, sustained recovery, day 90, primary outcome.
Effect extraction follows pre-specified rules prioritizing more serious outcomes. Submit updates
Holland et al., 8 Jul 2022, Double Blind Randomized Controlled Trial, placebo-controlled, USA, peer-reviewed, 103 authors, study period 10 February, 2021 - 30 September, 2021, average treatment delay 8.0 days, trial NCT04501978 (history) (ACTIV-3-TICO). Contact: adit.ginde@cuanschutz.edu.
This PaperTixagev../c..All
Tixagevimab-cilgavimab for treatment of patients hospitalised with COVID-19: a randomised, double-blind, phase 3 trial
Prof Adit A Ginde, Thomas A Murray, Nicole Engen, Greg Grandits, Andrew Vekstein, Noel Ivey, Ahmad Mourad, Uriel Sandkovsky, Robert L Gottlieb, Mezgebe Berhe, Mamta K Jain, Rubria Marines-Price, Barbine Tchamba, Agbor Agbor, Lourdes Mateu, Sergio España-Cueto, Gemma Lladós, Eleftherios Mylonakis, Ralph Rogers, Fadi Shehadeh, Michael R Filbin, Kathryn A Hibbert, Kami Kim, Thanh Tran, Peter E Morris, Evan P Cassity, Barbara Trautner, Lavannya M Pandit, Kirk U Knowlton, Lindsay Leither, Michael A Matthay, Angela J Rogers, Wonder Drake, Beatrice Jones, Garyfallia Poulakou, Konstantinos N Syrigos, Eduardo Fernández-Cruz, Marisa Di Natale, Eyad Almasri, Leire Balerdi-Sarasola, Sanjay R Bhagani, Katherine L Boyle, Jonathan D Casey, Peter Chen, David J Douin, Clark Files, Huldrych F Günthard, Duncan Hite, Robert C Hyzy, Akram Khan, Moses Kibirige, Robert Kidega, Ivan Kimuli, Francis Kiweewa, Jens-Ulrik Jensen, Bradley G Leshnower, Joseph K Lutaakome, Prasad Manian, Jose Luis Morales-Rull, Shaney J O'mahony, Scott Overcash, Srikant Ramachandruni, Jay S Steingrub, Hassan S Taha, Michael Waters, Barnaby E Young, Andrew N Phillips, Daniel D Murray, Tomas O Jensen, Maria L Padilla, David Sahner, Katy Shaw-Saliba, Robin L Dewar, Marc Teitelbaum, Ven Natarajan, Tauseef Rehman, Sarah Pett, Fleur Hudson, Giota Touloumi, Samuel M Brown, Wesley H Self, Christina C Chang, Adriana Sánchez, Amy C Weintrob, Timothy Hatlen, Birgit Grund, Shweta Sharma, S Cavan, Pedro Reilly, Mark T Garbes, Alison Esser, Abdel G Templeton, Babiker, Gregorio Sanitaria, Madrid, Spain Di Marañón, MD Natale
doi:10.1016/S2213-2600(22)00215
Background Tixagevimab-cilgavimab is a neutralising monoclonal antibody combination hypothesised to improve outcomes for patients hospitalised with COVID-19. We aimed to compare tixagevimab-cilgavimab versus placebo, in patients receiving remdesivir and other standard care. Methods In a randomised, double-blind, phase 3, placebo-controlled trial, adults with symptoms for up to 12 days and hospitalised for COVID-19 at 81 sites in the USA, Europe, Uganda, and Singapore were randomly assigned in a 1:1 ratio to receive intravenous tixagevimab 300 mg-cilgavimab 300 mg or placebo, in addition to remdesivir and other standard care. Patients were excluded if they had acute organ failure including receipt of invasive mechanical ventilation, extracorporeal membrane oxygenation, vasopressor therapy, mechanical circulatory support, or new renal replacement therapy. The study drug was prepared by an unmasked pharmacist; study participants, site study staff, investigators, and clinical providers were masked to study assignment. The primary outcome was time to sustained recovery up to day 90, defined as 14 consecutive days at home after hospital discharge, with co-primary analyses for the full cohort and for participants who were neutralising antibody-negative at baseline. Efficacy and safety analyses were done in the modified intention-to-treat population, defined as participants who received a complete or partial infusion of tixagevimab-cilgavimab or placebo. This study is registered with ClinicalTrials.gov, NCT04501978 and the participant follow-up is ongoing. Findings From Feb 10 to Sept 30, 2021, 1455 patients were randomly assigned and 1417 in the primary modified intention-to-treat population were infused with tixagevimab-cilgavimab (n=710) or placebo (n=707). The estimated cumulative incidence of sustained recovery was 89% for tixagevimab-cilgavimab and 86% for placebo group participants at day 90 in the full cohort (recovery rate ratio [RRR] 1•08 [95% CI 0•97-1•20]; p=0•21). Results were similar in the seronegative subgroup (RRR 1•14 [0•97-1•34]; p=0•13). Mortality was lower in the tixagevimabcilgavimab group (61 [9%]) versus placebo group (86 [12%]; hazard ratio [HR] 0•70 [95% CI 0•50-0•97]; p=0•032). The composite safety outcome occurred in 178 (25%) tixagevimab-cilgavimab and 212 (30%) placebo group participants (HR 0•83 [0•68-1•01]; p=0•059). Serious adverse events occurred in 34 (5%) participants in the tixagevimab-cilgavimab group and 38 (5%) in the placebo group. Interpretation Among patients hospitalised with COVID-19 receiving remdesivir and other standard care, tixagevimab-cilgavimab did not improve the primary outcome of time to sustained recovery but was safe and mortality was lower.
Contributors JDN, TAM, NE, and GG directly accessed and verified the underlying data. JDL, HCL, JDN, AGB, VJD, ACG, ESH, VK, and BTT were responsible for conceptualisation. All authors were responsible for the investigation and reviewing and editing the manuscript. JDN, TAM, NE, and GG were responsible for data curation. TAM, NE, and GG were responsible for formal analysis JDN, AGB, VJD, ACG, VK, BTT, and JDL were responsible for funding acquisition. JDL, HCL, JDN, AGB, VJD, ACG, ESH, VK, GM, and BTT were responsible for supervision. TLH, AAG, and RP composed the initial manuscript. Declaration of interests TLH reports consulting fees from Lysovant, royalties for UpToDate topic authorship, and participation on a Staphylococcus Aureus Network Adaptive Platform Trial Data and Safety Monitoring Board (DSMB), outside of the submitted work. AAG reports grants from US National Institutes of Health (NIH) during the conduct of the study, grants from US Centers for Disease Control (CDC), US Department of Defense (DOD), AbbVie, and Faron Pharmaceuticals, and participation on a NIH DSMB, outside of the submitted work. RP reports grants from Gilead, ViiV, and MSD and consulting fees from Gilead, ViiV, MSD, Theratechnologies, and Eli Lilly, outside of the submitted work. TAM reports grants from National Institute of Allergies and Infectious Diseases (NIAID), NIH, and Leidos, outside of the submitted work. GG reports partial salary support from NIH through the University of Minnesota..
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Late treatment
is less effective
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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