Exosomes enriched with Src, insulin-like growth factor 1 receptor (IGF-IR), and focal adhesion kinase (FAK) proteins activate Src/FAK signaling, enhancing prostate cancer cell proliferation, migration, and angiogenesis, which may provide potential biomarkers for prostate cancer (PrCa) progression [126]. This evidence concerns the gene PTK2 and prostate carcinoma.