TAOK1 (TAO kinase 1) is a serine/threonine kinase that functions as a master regulator of cellular stress responses and neuronal development. As a MAP3K family member, TAOK1 activates the p38/MAPK14 stress-activated cascade by phosphorylating upstream kinases MAP2K3 and MAP2K6 1, mediating responses to DNA damage, G-protein coupled receptor signaling, and apoptotic pathways through JNK activation. TAOK1 regulates cytoskeleton stability by phosphorylating MARK2, leading to tau detachment from microtubules 2. Beyond stress signaling, TAOK1 coordinates metabolic-immune integration by sensing oxaloacetate and phosphorylating ETS2 to promote interferon responses against influenza 3. In DNA repair, TAOK1 phosphorylates USP7 to stabilize RAD51 and promote homologous recombination filament formation, with TAOK1 inhibition sensitizing cancer cells to PARP inhibitors 2. Dysregulation of TAOK1 underlies neurodevelopmental disorders characterized by developmental delay, intellectual disability, distinctive facial features, macrocephaly, and hypotonia 4. TAOK1 also drives cancer cachexia-associated muscle atrophy through the TAOK1/p38-MAPK/FoxO3/ubiquitin-proteasome pathway 56, and mediates doxorubicin-induced cardiotoxicity via p38 MAPK signaling 7. Consequently, TAOK1 inhibition represents a promising therapeutic strategy for neurodevelopmental disorders, cancer-associated muscle wasting, cardiotoxicity, and enhancing PARP inhibitor efficacy.