On the one hand, low-dose RT can increase secretion of chemokines involved in the attraction of T cells (e.g., CXCL9, CXCL10, CXCL11, CCL4, and CCL5).321 Thus, the CD8+ T cells primed by primary RT could be attracted to the remote secondary tumor and low-dose RT amplifies the potential of abscopal effect. This evidence concerns the gene CD8A and neoplasm.