TEAD1 is a TEA domain transcription factor that serves as a critical effector in the Hippo signaling pathway, functioning as an essential mediator of YAP/TAZ-dependent gene expression 1. TEAD1 regulates cell proliferation, migration, and epithelial mesenchymal transition by controlling transcription of YAP1 and WWTR1/TAZ target genes, including CTGF and Prdx3 12. The pathway integrates organ size control and tumor suppression through phosphorylation cascades initiated by MST1/MST2 and LATS1/2 kinases 3. Post-translational modifications regulate TEAD1 function: SUMOylation at lysine 173 enhances protein stability, nuclear localization, and DNA-binding ability while strengthening YAP1 interaction 4. Alternative splicing of TEAD1, controlled by TM7SF3 through hnRNPU-mediated mechanisms, generates functionally distinct isoforms 5. Clinically, dysregulated TEAD1 activity contributes to multiple pathologies: pathological cardiac hypertrophy 4, pulmonary fibrosis through AT2 cell senescence 2, liver fibrosis in metabolic-dysfunction-associated steatohepatitis 5, and various cancers 6. TEAD1-mediated YAP/TAZ signaling also regulates tissue protection, including endothelial CXCL17 expression during hepatic ischemia-reperfusion injury 7. TEAD inhibitors have emerged as promising therapeutic agents, with clinical trials underway in mesothelioma and other Hippo-pathway-mutant malignancies 6.