First-in-Human Assessment of Feasibility and Safety of Multiplexed Genetic Engineering of Autologous T Cells Expressing NY-ESO -1 TCR and CRISPR/Cas9 Gene Edited to Eliminate Endogenous TCR and PD-1 (NYCE T cells) in Advanced Multiple Myeloma (MM) and Sarcoma

Background: Autologous T cells genetically modified with a lentiviral vector to express affinity-enhanced T cell receptors (TCR) or chimeric antigen receptors have shown great promise for the treatment of cancer. NY-ESO-1 is a cancer testis antigen with little normal tissue expression but with aberrant expression in MM, sarcomas, and melanomas. An HLA-A201 restricted TCR recognizing the NY-ESO-1/LAGE-1 157-165 epitope (SLLMWITQC) kills NY-ESO...