NCIt definition : A preparation of lymphocytes harvested from a patient and genetically modified ex
vivo for use in gene therapy for the patient's cancer. Ex vivo, the lymphocytes are
transduced with the N2 retroviral vector, which is modified to express a gene whose
protein product either kills tumor cells or elicits specific anti-tumor immunity.
Genetically modified lymphocytes are infused back into the patient from whom they
were harvested, locate to the tumor site, and express the candidate protein that kills
tumor cells or stimulates host anti-tumor immunity. (NCI04);