RT has been found to upregulate the expression of specific chemokines, including C–C motif chemokine ligand 5 (CCL5) and C–X–C motif chemokine ligand 9 (CXCL9), which play crucial roles in recruiting and guiding T cells to the tumor site, further improving T‐cell‐mediated tumor control [18, 19]. The gene discussed is CXCL9; the disease is neoplasm.