The chemokine receptor CXCR3, another dNK marker, is expressed in TI-NKs of colorectal cancer, breast cancer, melanoma, and glioblastoma (42, 49, 67–69), while CXCR4 in NK is upregulated in neuroblastoma and prostate cancer (42, 71). Here, CXCR4 is linked to prostate carcinoma.