NCIt definition : A preparation of autologous tumor infiltrating lymphocytes (TILs) gene-edited with
the clustered regularly interspaced short palindromic repeats (CRISPR)-Cas9 nuclease
complex to inactivate the endogenous gene suppressor of cytokine signaling 1 (SOCS1),
with potential immunomodulating and antineoplastic activities. Upon infusion of the
autologous CRISPR-Cas9 engineered TILs KSQ-001EX back into the patient, the cells
specifically recognize, target and kill the patient's tumor cells. SOCS1 serves as
a negative regulator of cytokine signaling in T-cells and negatively influences the
survival, differentiation, and function of T-cells. Inactivation of endogenous SOCS1
in TILs increases responsiveness to cytokine signals, and enhances anti-tumor potency,
persistence and memory formation of TILs.;