demcizumab   Click here for help

GtoPdb Ligand ID: 8451

Synonyms: OMP-21M18 | OMP21M18
Compound class: Antibody
Comment: Demcizumab is a humanised IgG2 monoclonal antibody targeting DLL4 (delta like canonical Notch ligand 4), a membrane bound Notch receptor ligand expressed predominantly on vascular endothelial cells.
Peptide sequence information for this antibody is available from its IMGT/mAb-DB record. A BLAST search using the peptide sequence of the variable region of the heavy chain forming demcizumab reveals US7750124 B2 as the covering patent [2].
Bioactivity Comments
The binding affinity presented in the table below is the only one provided in the covering patent, and is for the humanised 21M18 variant H2L2 [2]. It is unclear which variant went on to become demcizumab.
Selectivity at ligand targets
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Target Sp. Type Action Value Parameter Concentration range (M) Reference
delta like canonical Notch ligand 4 Primary target of this compound Hs Antibody Binding 9.5 pKi - 2
pKi 9.5 (Ki 3.3x10-10 M) [2]