TRIM47 is an E3 ubiquitin ligase that plays critical roles in multiple cellular processes through protein ubiquitination and degradation. The protein functions primarily as a negative regulator of various signaling pathways, including innate immune responses and autophagy. In hematopoietic stem cells, TRIM47 prevents stress-induced exhaustion by mediating K48-linked ubiquitination and degradation of MAVS, thereby inhibiting excessive innate immune activation 1. In liver pathology, TRIM47 promotes nonalcoholic steatohepatitis (NASH) progression by degrading the protective deubiquitinase CYLD, which normally suppresses TAK1-mediated JNK-p38 signaling 2. TRIM47 also regulates hepatocellular carcinoma progression by ubiquitinating CDO1, affecting ferroptotic cell death pathways 3. In cerebrovascular disease, TRIM47 serves as an autophagy inhibitor in brain endothelial cells, with genome-wide association studies identifying it as a genetic risk factor for white matter hyperintensities 45. Loss of TRIM47 function increases endothelial permeability, a hallmark of cerebral small vessel disease 4. The protein is particularly enriched in brain endothelial cells and shows tissue-specific expression patterns that correlate with its diverse physiological roles 45.