Dual Eli-Lilly mAb bamlanivimab and etesevimab reduces hospitalisation after single infusion: results from BLAZE-1 study
Simon Collins, HIV i-Base
Results from the phase 3 stage of the BLAZE-1 study in 1053 participants with confirmed mild/moderate COVID-19 reported a 70% reduction in hospitalisation or death by day 29 (n=11 vs 36) in those randomised to the active monoclonal antibodies (mAbs) vs placebo (p=0.0004). 
The two neutralising mAbs in development by Eli-Lilly (2800mg bamlanivimab+2800mg etesevimab) were given together as a single infusion within three days of diagnosis.
Deaths were significantly reduced (n=0 vs 10) and symptoms resolved faster in the active arm. Median drop in viral load at day 7: difference –1.20 log (95%CI: –1.46 to –0.94), p<0.00000001).
Similar rates of adverse events were reported for the combined treatment vs placebo groups (13.3 % vs 11.6%).
Results from the phase 2 dose-finding stage of this study were reported in the NEJM in October. 
- Dougan M et al. Bamlanivimab+etesevimab for treatment of COVID-19 in high-risk ambulatory patients. CROI 2021, virtual. Late breaking oral abstract 122.
https://www.croiconference.org/abstract/bamlanivimabetesevimab-for-treatment-of-covid-19-in-high-risk-ambulatory-patients/(abstract and webcast)
- Two different dual antibody treatments each reduce SARS-CoV-2 viral load by >0.5 log. HTB (22 January 2021).
This report was first published on 19 March 2021.