NCIt definition : A human monoclonal antibody directed against the human inhibitory killer IgG-like
receptor (KIR) with potential immunostimulating and antineoplastic activities. Anti-KIR
monoclonal antibody IPH 2101 binds to the KIR receptor expressed on human natural
killer (NK) cells, which may prevent KIR-mediated inhibition of NK cells and permit
NK cell-mediated anti-tumor cytotoxicity. KIRs are surface glycoproteins that bind
to major histocompatibility complex (MHC)/human leukocyte antigen (HLA) class I subtypes
on target cells; binding of KIRs inhibits NK cell-mediated cytotoxicity.;