TGF‐β1 and VEGF have been reported to promote tumor radioresistance.[35, 51] Therefore, we investigated the radiosensitivity of multiple tumor cells following preconditioning with exogenous TGF‐β1 and VEGFA or simultaneous blocking TGF‐β1 and VEGFA with Y332D. Here, TGFB1 is linked to neoplasm.