CXCR4 and prostate adenocarcinoma: Regarding chemokines and their receptors (Figures 6B, C), PLAG1 is significantly positively correlated with chemokines such as CXCL9, CXCL10, and CCL5, as well as their receptors (including CCR5, CXCR3, and CXCR4) in PRAD and BRCA.