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  • 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.
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