Etesevimab (JS016) is a recombinant neutralizing human IgG1 anti-SARS-CoV-2 monoclonal antibody.
Etesevimab (JS016) binds the spike protein with a Kd of 6.45 nM and blocks spike protein attachment to the human angiotensin converting enzyme 2 (ACE2) receptor with an IC50 value of 0.32 nM (0.046 μg/mL)[1].
Etesevimab blocks viral cell fusion to prevent SARS-CoV-2 invasion of human cells and inhibits viral replication[1].
References:
[1]. Wu X, et al. Tolerability, Safety, Pharmacokinetics, and Immunogenicity of a Novel SARS-CoV-2 Neutralizing Antibody, Etesevimab, in Chinese Healthy Adults: a Randomized, Double-Blind, Placebo-Controlled, First-in-Human Phase 1 Study. Antimicrob Agents Chemother. 2021 Jul 16;65(8):e0035021.