TRADD (TNFRSF1A-associated via death domain) is a critical adapter protein that mediates TNF receptor 1 (TNFR1) signaling by binding through its C-terminal death domain to activated TNFR1 and recruiting downstream effectors including FADD, TRAF2, and RIPK1 1. TNFR1 signaling occurs through sequential complexes: Complex I at the plasma membrane rapidly activates NF-κB for survival signaling, while Complex II in the cytoplasm recruits caspase-8 for apoptosis when NF-κB activation fails 1. TRADD's N-terminal TRAF2-binding domain regulates K63-linked ubiquitination of beclin 1 and RIPK1, thereby modulating both autophagy and apoptosis 2. TRADD has emerged as a dual regulator in disease: phosphorylation of TRADD by TAK1 modulates RIPK1-dependent apoptosis, with TRADD and RIPK1 cooperating to mediate TNF and TLR-induced cell death relevant to inflammatory bowel disease 3. In liver disease, TRADD expression correlates with hepatocyte fate, fibrotic progression, and tumor differentiation, with therapeutic potential through pharmacological inhibition 4. Small-molecule TRADD inhibitors (ICCB-19, Apt-1) can simultaneously block apoptosis and restore cellular homeostasis by activating autophagy, demonstrating translational value in proteinopathy and neurodegenerative disease models 2.