Autologous CD123CAR-CD28-CD3zeta-EGFRt-expressing T Lymphocytes - CISMeF
Autologous CD123CAR-CD28-CD3zeta-EGFRt-expressing T LymphocytesNCIt concept
Preferred Label : Autologous CD123CAR-CD28-CD3zeta-EGFRt-expressing T Lymphocytes;
NCIt synonyms : CD123R(EQ)28zeta/EGFRt T Cells; Anti CD123-CAR/CD28-costimulatory Lentiviral Vector-transduced Autologous T Lymphocytes;
NCIt definition : A preparation of genetically modified autologous T-cells transduced with a replication
incompetent, self-inactivating lentiviral vector expressing a hinge-optimized, chimeric
antigen receptor (CAR), containing a CD28 co-stimulatory signaling domain fused to
CD3 zeta, the single-chain variable fragment of CD123 (Interleukin-3 receptor alpha
chain or IL3RA) antigen, and a truncated form of the human epidermal growth factor
receptor (EGFRt), with potential immunostimulating and antineoplastic activities.
Upon intravenous administration, autologous CD123CAR-CD28-CD3zeta-EGFRt-expressing
T Lymphocytes are directed to and induce selective toxicity in CD123-expressing tumor
cells. CD123 is normally expressed on committed blood progenitor cells in the bone
marrow; its overexpression is associated with increased leukemic cell proliferation
and aggressiveness. Devoid of both ligand binding domains and tyrosine kinase activity,
EGFRt both facilitates detection of the administered T-cells in vivo and can promote
elimination of those cells following a cetuximab-induced antibody-dependent cellular
cytotoxicity response. The costimulatory signaling domain enhances both proliferation
of T-cells and antitumor activity. Hinge optimization prevents recognition of the
CAR by Fc receptors (FcRs).;