OVOL2 is a zinc-finger transcription factor that functions as a critical regulator of epithelial identity and energy homeostasis 1. As a DNA-binding transcription repressor, OVOL2 suppresses epithelial-to-mesenchymal transition (EMT) primarily through repression of ZEB1 1, and maintains epithelial lineage determination during embryogenesis 2. In keratinocytes, OVOL2 suppresses cell cycling and terminal differentiation by directly repressing MYC and NOTCH1 3. OVOL2 plays dual roles in energy metabolism: it is essential for brown adipocyte development and thermogenesis, while limiting white adipogenesis 1. Mechanistically, OVOL2 operates through multiple pathways—it directly inhibits JAK/STAT3 signaling to suppress fatty acid oxidation in cancer cells 4, and binds P65 to suppress NF-κB-mediated GLUT1 translocation and glucose import 5. In cancer contexts, OVOL2 loss promotes metabolic reprogramming and stemness characteristics 4. Clinically, OVOL2 promoter mutations cause posterior polymorphous corneal dystrophy (PPCD1) through ectopic endothelial expression 67, while OVOL2 is downregulated in lung and breast cancers, suggesting tumor-suppressive functions 54.