Tixagevimab and cilgavimab are two recombinant human IgG1 monoclonal antibodies, with amino acid substitutions in the Fc regions, to extend antibody half-life and to reduce antibody effector function and potential risk of antibody-dependent enhancement of disease. Tixagevimab and cilgavimab can simultaneously bind to non-overlapping regions of the spike protein receptor binding domain (RBD) of SARS-CoV-2. Tixagevimab, cilgavimab and their combination bind to spike blocking its interaction with the human ACE2 receptor, resulting in a blockade of virus entry.
This medicinal substance has been classified in the anatomical therapeutic chemical (ATC) classification according to its main therapeutic use as follows:
| ATC code | Group title | Classification |
|---|---|---|
| J06BD03 | J Antiinfectives for systemic use → J06 Immune sera and immunoglobulins → J06B Immunoglobulins → J06BD Antiviral monoclonal antibodies | |
Competent medicine agencies globally have authorized commercialization of this active ingredient according to these medication package inserts (MPIs):
| Title | Information Source | Document Type | |
|---|---|---|---|
| EVUSHELD Solution for injection | European Medicines Agency (EU) | MPI, EU: SmPC |
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