EGFR and neoplasm: Tumor growth assays were performed by inoculating the TNBC cell lines into the breast fat pad of the female nude mice that were injected with EGFR‐CAR NK cells or Con‐CAR NK cells on days 14, 21, 28, and 35 to assess the possible role of EGFR‐CAR NK cells in inhibition of CLDX TNBC tumor growth.