BIRC5 has been identified as a critical target involved in a variety of cancer cell signaling pathways, and the upregulation of BIRC5 may serve as a role in the following mechanisms: critically antagonizing caspase-dependent apoptosis and activating P53 and its downstream target P21, which stalls cell cycle progression as a cyclin-dependent kinase inhibitor (CDKi) [38]. The gene discussed is TP53; the disease is cancer.