In February, the U.S. Food and Drug Administration approved the first tumor-infiltrating lymphocyte, or TIL therapy, for solid tumors. The approval was hailed as a milestone that points the path forward for a new class of cell therapies for solid tumors. We spoke to Jason Bock, CEO of CMTC, the joint venture between Resilience and MD Anderson Cancer Center, about the emerging area of TIL therapies, the significance of the first approved therapy in the class, and how they may address existing limitations of CAR-T therapies.