Sipavibart: meta-analysis of COVID-19 studies

Meta-analysis of sipavibart COVID-19 studies. mAb use may create new variants that spread globally1-3, and may be associated with prolonged viral loads, clinical deterioration, and immune escape2,4-7.
0 0.5 1 1.5+ All studies -241% 2 2K Improvement, Studies, Patients Relative Risk Mortality -241% 2 2K Cases 33% 1 116 RCTs -241% 2 2K RCT mortality -241% 2 2K Peer-reviewed -236% 1 2K Prophylaxis -241% 2 2K Sipavibart for COVID-19 c19early.org December 2025 Favorssipavibart Favorscontrol
0 0.25 0.5 0.75 1 1.25 1.5 1.75 2+ NOVELLA AstraZen.. (DB RCT) -267% 3.67 [0.18-74.2] death 2/87 0/29 Improvement, RR [CI] Treatment Control SUPERNOVA Haidar (DB RCT) -236% 3.36 [0.79-14.3] death 20/1,671 2/561 Tau​2 = 0.00, I​2 = 0.0%, p = 0.065 Prophylaxis -241% 3.41 [0.92-12.6] 22/1,758 2/590 241% higher risk All studies -241% 3.41 [0.92-12.6] 22/1,758 2/590 241% higher risk 2 sipavibart COVID-19 studies c19early.org December 2025 Tau​2 = 0.00, I​2 = 0.0%, p = 0.065 Effect extraction pre-specified(most serious outcome) Favors sipavibart Favors control 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2+ NOVELLA AstraZen.. (DB RCT) -267% 3.67 [0.18-74.2] 2/87 0/29 Improvement, RR [CI] Treatment Control SUPERNOVA Haidar (DB RCT) -236% 3.36 [0.79-14.3] 20/1,671 2/561 Tau​2 = 0.00, I​2 = 0.0%, p = 0.065 Prophylaxis -241% 3.41 [0.92-12.6] 22/1,758 2/590 241% higher risk All studies -241% 3.41 [0.92-12.6] 22/1,758 2/590 241% higher risk 2 sipavibart COVID-19 mortality results c19early.org December 2025 Tau​2 = 0.00, I​2 = 0.0%, p = 0.065 Favors sipavibart Favors control 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2+ NOVELLA AstraZen.. (DB RCT) -267% 3.67 [0.18-74.2] death 2/87 0/29 Improvement, RR [CI] Treatment Control SUPERNOVA Haidar (DB RCT) -236% 3.36 [0.79-14.3] death 20/1,671 2/561 Tau​2 = 0.00, I​2 = 0.0%, p = 0.065 Prophylaxis -241% 3.41 [0.92-12.6] 22/1,758 2/590 241% higher risk All studies -241% 3.41 [0.92-12.6] 22/1,758 2/590 241% higher risk 2 sipavibart COVID-19 serious outcomes c19early.org December 2025 Tau​2 = 0.00, I​2 = 0.0%, p = 0.065 Effect extraction pre-specified(most serious outcome) Favors sipavibart Favors control 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2+ NOVELLA AstraZen.. (DB RCT) 33% 0.67 [0.13-3.45] symp. case 4/87 2/29 Improvement, RR [CI] Treatment Control Tau​2 = 0.00, I​2 = 0.0%, p = 0.64 Prophylaxis 33% 0.67 [0.13-3.45] 4/87 2/29 33% lower risk All studies 33% 0.67 [0.13-3.45] 4/87 2/29 33% lower risk 1 sipavibart COVID-19 case result c19early.org December 2025 Tau​2 = 0.00, I​2 = 0.0%, p = 0.64 Favors sipavibart Favors control 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2+ NOVELLA AstraZen.. (DB RCT) -267% 3.67 [0.18-74.2] death 2/87 0/29 Improvement, RR [CI] Treatment Control SUPERNOVA Haidar (DB RCT) -236% 3.36 [0.79-14.3] death 20/1,671 2/561 Tau​2 = 0.00, I​2 = 0.0%, p = 0.065 Prophylaxis -241% 3.41 [0.92-12.6] 22/1,758 2/590 241% higher risk All studies -241% 3.41 [0.92-12.6] 22/1,758 2/590 241% higher risk 2 sipavibart COVID-19 Randomized Controlled Trials c19early.org December 2025 Tau​2 = 0.00, I​2 = 0.0%, p = 0.065 Effect extraction pre-specified(most serious outcome) Favors sipavibart Favors control 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2+ NOVELLA AstraZen.. (DB RCT) -267% 3.67 [0.18-74.2] 2/87 0/29 Improvement, RR [CI] Treatment Control SUPERNOVA Haidar (DB RCT) -236% 3.36 [0.79-14.3] 20/1,671 2/561 Tau​2 = 0.00, I​2 = 0.0%, p = 0.065 Prophylaxis -241% 3.41 [0.92-12.6] 22/1,758 2/590 241% higher risk All studies -241% 3.41 [0.92-12.6] 22/1,758 2/590 241% higher risk 2 sipavibart COVID-19 RCT mortality results c19early.org December 2025 Tau​2 = 0.00, I​2 = 0.0%, p = 0.065 Favors sipavibart Favors control 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2+ SUPERNOVA Haidar (DB RCT) -236% 3.36 [0.79-14.3] death 20/1,671 2/561 Improvement, RR [CI] Treatment Control Tau​2 = 0.00, I​2 = 0.0%, p = 0.1 Prophylaxis -236% 3.36 [0.79-14.3] 20/1,671 2/561 236% higher risk All studies -236% 3.36 [0.79-14.3] 20/1,671 2/561 236% higher risk 1 sipavibart COVID-19 peer reviewed studies c19early.org December 2025 Tau​2 = 0.00, I​2 = 0.0%, p = 0.1 Effect extraction pre-specified(most serious outcome) Favors sipavibart Favors control 0 0.25 0.5 0.75 1 1.25 1.5 1.75 2+ NOVELLA AstraZen.. (DB RCT) -267% 3.67 [0.18-74.2] death 2/87 0/29 Improvement, RR [CI] Treatment Control NOVELLA AstraZen.. (DB RCT) 33% 0.67 [0.13-3.45] symp. case 4/87 2/29 SUPERNOVA Haidar (DB RCT) -236% 3.36 [0.79-14.3] death 20/1,671 2/561 Sipavibart COVID-19 outcomes c19early.org December 2025 Favors sipavibart Favors control
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