Radiotherapy activates p53-TET2 in myeloid cells, reducing caRNA m⁵C and suppressing IRF3–type I IFN signaling to drive immunosuppressive differentiation. TET2 inhibition preserves caRNA m⁵C–MBD6 signaling, restores IFN activation, and promotes antigen-presenting MDACs. ow.ly/XtQ250ZYiTl