CD19 and neoplasm: The results showed that both TSH‐28ζ‐CAR‐T and TSH‐BBζ‐CAR‐T cells effectively eradicated the TSHR‐positive tumor cells compared to the CD19‐CAR‐T group, and the anti‐tumor capacity is comparable to B7‐H3‐CAR‐T cells (Figure 3B,C).