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Bamlanivimab is a neutralizing human IgG1κ monoclonal antibody against the SARS-CoV-2 spike (S) protein for use in patients aged 12 and over at high risk of developing severe COVID-19.
Bamlanivimab is a neutralizing human IgG1κ monoclonal antibody against the SARS-CoV-2 spike (S) protein for use in patients aged 12 and over at high risk of developing severe COVID-19.
Bamlanivimab is a neutralizing recombinant human IgG1κ monoclonal antibody directed against the spike (S) surface protein of SARS-CoV-2 derived from screening antigen-specific B-cells from a convalescent COVID-19 patient. X-ray crystallography and cryo-EM structural determination suggest that bamlanivimab binds the receptor-binding domain (RBD) of the S protein at a position overlapping the ACE2 binding site and which is accessible in both the up and down conformations of the RBD. Specifically, bamlanivimab binds to the S protein with a K of 0.071 nM and blocks S protein-ACE2 interactions with an IC value of 0.025 μg/mL.
Bamlanivimab is not currently approved for any indication by the FDA. Bamlanivimab is authorized under an Emergency Use Authorization (EUA) for the treatment of mild to moderate COVID-19 in patients aged 12 years and older weighing at least 40 kg who are at high risk for progressing to severe COVID-19 and/or hospitalization due to COVID-19. Patients should have confirmed COVID-19, with identification of SARS-CoV-2 viral load by an approved test. Under this EUA, bamlanivimab is not authorized in patients who are hospitalized due to COVID-19, who require oxygen due to COVID-19, or in patients on oxygen therapy for non-COVID-19-related comorbidity who require an increased oxygen flow rate due to COVID-19. Bamlanivimab in combination with etesevimab is used to treat mild to moderate coronavirus disease 2019 (COVID-19) in adults and pediatric patients, including neonates, with positive results of direct SARS-CoV-2 viral testing, and who are at high risk for progression to severe COVID-19, including hospitalization or death. This combination regimen is also used for post-exposure prophylaxis of COVID-19 in unvaccinated or immunocompromised adults and pediatric individuals, including neonates, who are at high risk of progression to severe COVID-19, including hospitalization or death.
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