NCIt definition : Autologous T-lymphocytes that have been transduced, via a proprietary technology involving
a recombinant human fibronectin fragment to enhance transduction efficiency, with
a retroviral vector to express a chimeric antigen receptor (CAR) consisting of a single
chain variable fragment (scFv) of anti-CD19 coupled to co-stimulatory molecules, with
potential immunostimulating and antineoplastic activities. Upon transfusion, anti-CD19-CAR-expressing
autologous T-lymphocytes TBI-1501 target and bind to CD19-expressing neoplastic B-cells.
This results in a cytotoxic T-lymphocyte (CTL) response against CD19-expressing tumor
cells, the release of cytotoxic molecules and the induction of tumor cell lysis. CD19,
cluster of differentiation 19, is a B-cell-specific cell surface antigen overexpressed
in B-cell lineage tumors. Incorporation of the costimulatory signaling domains increase
proliferation and activation of T-cells.;