T-Cell Neoplasms after B-Cell Neoplasms — The Pre–CAR T-Cell Era

T-cell neoplasms after treatment for B-cell neoplasms are not unique to CAR T-cell therapy. In the pre–CAR T-cell era, the risk of a T-cell neoplasm after treatment for a B-cell neoplasm was 4.8 times the risk in the general population.