Cellular immunotherapy is the Lamine Yamal of cancer therapy. It is easy to forget how young the field is – and that as stunning as it is to watch in action already, it is still reaching its full potential. One aspect of doing so is working in a broader range of tumor types. The field made a giant step toward that goal with last week’s approval of Tecelra (afamitresgene autoleucel, Adaptimmune Therapeutics plc), the first CAR T cell to be approved for treatment of a solid tumor.