XIAP and prostate cancer: NR2F6 might directly regulate and elevate the survivability of cancerous colon cells via XIAP (X-Linked Inhibitor of Apoptosis) [39], whereas it supports proliferation and metastasis in hepatocellular carcinoma via TIP60 regulation [38], which is already known to promote mammary tumorigenesis [58], pleural mesothelioma malignancy [59] and prostate cancer [60] growth.