NCIt definition : A humanized immunoglobulin G1 kappa (IgG1k) monoclonal antibody directed against leukocyte-associated
immunoglobulin-like receptor 1 (LAIR1; LAIR-1; CD305), with potential antineoplastic
activity. Upon administration, anti-LAIR1 monoclonal antibody NC525 targets, binds
to and inhibits LAIR1-mediated downstream survival signaling. In addition, NC525 induces
Fc-mediated antibody-dependent cellular cytotoxicity (ADCC) and antibody-dependent
cellular phagocytosis (ADCP). This inhibits survival of LAIR1-expressing acute myeloid
leukemia (AML) leukemic stem cells (LSCs) and blast cells, and decreases tumor cell
proliferation. LAIR1, an immune inhibitory checkpoint receptor, is overexpressed in
AML LSCs and blast cells while having a minimal expression on normal, healthy hematopoietic
stem cells (HSCs.). LAIR1 plays a key role in mediating survival signaling in these
tumor cells.;