AXL and lung carcinoma: To evaluate the antitumor efficacy of mfhAXL CAR-T cells in the treatment of solid tumors, we conducted a cytotoxicity assay using mfhAXL CAR-T and untransfected T cells (control T) against AXL-positive lung cancer cells (A549) and pancreatic cancer cells (Panc-1) at different E/T ratios (Supplementary Figure S2).