JNJ-63898081 induced antigen dependent cytotoxicity across a panel of PSMA expressing cell lines varying in PSMA expression (20,000 to 150,000 copies/cell). JNJ-63898081 incubated in vitro with patient derived and healthy donor derived T cells were equally effective at eliminating PSMA expressing tumor cells. In addition, JNJ-63898081 was able to effectively cause T cell dependent cytotoxicity of an enzalutamide-resistant LNCaP-AR cell line.