Research suggests that tumor irradiation may enhance the effectiveness of CAR T cell therapy in treating lung metastases by promoting antigen presentation through dendritic cells. The role of dendritic cells in the tumor microenvironment and their interaction with CAR T cells is an area of ongoing study. Findings on the relationship between irradiation, dendritic cells, and CAR T cell therapy are being explored in various research contexts, including solid tumors and cancer immunotherapy.