NCIt definition : A preparation of autologous T-lymphocytes transduced with a retroviral vector encoding
a T-cell receptor (TCR) sequence specific for CT-RCC-1, a tumor-associated antigen
(TAA) and HLA-A11-restricted peptide encoded by human endogenous retrovirus (HERV)
type E as well as a truncated CD34 chain (CD34t), with potential antineoplastic activity.
Upon isolation, transduction, expansion ex vivo and re-introduction into the patient,
the autologous CT-RCC-1 HERV-E-TCR-transduced-HLA-A11-restricted CD8 /CD34t T-cells
bind to and induce selective toxicity in tumor cells expressing both the HLA-A11 allele
and the CT-RCC-1 HERV-E antigen. The CD34t protein allows the transduced cells to
be identified with an anti-CD34 antibody, and facilitates monitoring of the genetically
modified T-cells following adoptive transfer. CT-RCC-1 HERV-E is a TAA found in a
high percentage of clear cell renal cell carcinoma (ccRCC) cells.;