abelacimab   Click here for help

GtoPdb Ligand ID: 12417

Synonyms: MAA-868 | MAA868 | NVS250519
Compound class: Antibody
Comment: Abelacimab (MAA868) is a humanized monoclonal antibody that binds to the catalytic domain of both coagulation factor XI (FXI, F11) and activated FXI (FXIa) [3], and which was designed for antithrombotic potential. It locks FXIa into a conformation that cannot be activated by FXIIa or thrombin [1-2]. Inhbiting FXI/FXIa produces anticoagulant effects without adversly affecting normal hemostasis. Anti-FXI mAbs offer an alternative FXI-targeting strategy to investigational small molecule FXI inhibitors like asundexian and milvexian. Osocimab is another clinical stage anti-FXI mAb.
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Selectivity at enzymes
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Target Sp. Type Action Value Parameter Concentration range (M) Reference
coagulation factor XI Hs Antibody Binding 11.3 – 11.9 pKd - 2
pKd 11.9 (Kd 1.3x10-12 M) [2]
Description: Binding to human FXI
pKd 11.3 (Kd 4.7x10-12 M) [2]
Description: Binding to human FXIa