P-PSMA-101 is a first-in-class, stem cell memory T cell-enriched, PSMA-targeting CAR-T therapy. This cellular therapy showed notable clinical activity in two patients; however, PSA50 responses were generally modest. While severe immune effector-related toxicities were observed in some patients, a novel iCasp9 safety switch was largely effective in mitigating toxicity.
Lee et al. (Wed,) studied this question.