CXCL16 and neoplasm: A chemokine receptor that binds CXCL16 and a marker identifying a TRM cell subset involved in immunosurveillance. It is crucial for interactions with tumor dendritic cells, promoting the proliferation of CXCR6+ TRM cells and enhancing the efficacy of antitumor vaccines and chimeric antigen receptor‐T‐cell therapies.