Compositions and methods are described herein that are useful for the detection of
prostate cancer progression by determining the expression levels of genes associated with metastatic PCa. Based on the expression of IL-6, SELE, FOSB, NRK, NFRB2, FOXP3, ARG1, CEBPDP, TNFα,
ADAMTS4, PENK, FOSL1, DUSP1, ACTA1, AGT, ATF3, CDK1, CXCL8, SELP, VCAN, TFP12, or NR4A3 genes or any combination thereof, treatment of PCa with SELE agonists, TNFα antagonists, and / or
immune checkpoint inhibitors (ICIs) are shown to be effective.