CREB5 (cAMP responsive element binding protein 5) is a transcription factor that binds to cAMP response elements and activates gene transcription. The protein functions as a key regulator in multiple pathways by directly binding to promoter regions of target genes and modulating their expression 1. CREB5 plays critical roles in cellular processes including proliferation, epithelial-mesenchymal transition (EMT), and maintenance of stem cell states. In cancer contexts, CREB5 exhibits oncogenic properties across multiple tumor types. In prostate cancer, CREB5 promotes resistance to androgen receptor-targeting therapies by physically interacting with AR and FOXA1, reprogramming nuclear protein interactions and activating Wnt signaling pathways 2. In hepatocellular carcinoma, CREB5 promotes EMT by directly binding to and upregulating tenascin-C (TNC) expression 1. CREB5 also maintains stemness in diffuse intrinsic pontine glioma through an H3.3K27M/CREB5/ID1 axis 3. Additionally, CREB5 functions in kidney injury repair processes, serving as a regulator of both successful and failed tubular repair while driving proximal tubular cell proliferation 4. The gene can be regulated by endoplasmic reticulum stress through super-enhancer mechanisms and represents a potential therapeutic target in various disease contexts.