NCIt definition : A preparation of autologous tumor infiltrating lymphocytes (TILs) engineered to express
membrane-bound interleukin-12 (mbIL-12), with potential immunomodulating and antineoplastic
activities. The TILs are isolated from an autologous tumor sample and engineered to
express mbIL-12. Upon infusion of the autologous mbIL-12-expressing TILs GT202 back
into the patient, the cells specifically recognize, target and kill the patient's
tumor cells. IL-12 expression activates the immune system by promoting the secretion
of interferon-gamma (IFNg), activating natural killer cells (NKs), and inducing cytotoxic
T-lymphocyte (CTL) responses, further killing tumor cells.;