Definition

A preparation of allogeneic natural killer cells (NKs) expressing a chimeric antigen receptor (CAR) specific for the tumor-associated antigen (TAA) oncofetal trophoblast glycoprotein (5T4; TPBG; Wnt-activated inhibitory factor 1 or WAIF1), with potential immunomodulating and antineoplastic activities. Upon transfusion, the anti-5T4 CAR-NK cells recognize, bind to and induce selective cytotoxicity in 5T4-expressing tumor cells. 5T4, a transmembrane glycoprotein, is overexpressed by a variety of cancer cell types; its expression is correlated with increased invasiveness.