Immune therapies have rewritten the game when it comes to cancer treatment, earning the “fifth pillar” label next to more tried and true treatments like radiation therapy, surgery, and chemotherapy. And no immunotherapy has garnered quite the same excitement as CAR T-cell therapy, first approved in 2017 by the Food and Drug Administration to treat a form of acute lymphoblastic leukemia. At the time, then-FDA Commissioner Scott Gottlieb called...