Notably, research indicates that the immunosuppressive TME can polarize cytotoxic γδ T cells into IL‐17‐producing immunosuppressive cells,[59] yet in our study, the Vδ1 T cells used did not release IL‐17, emphasizing the important role of multiple CAR‐γδ T cells in maintaining continuous tumor‐killing ability. This evidence concerns the gene IL17A and neoplasm.