TNFAIP2 (TNF alpha induced protein 2) is a cytosolic protein that serves as a primary response gene to TNFα stimulation and functions as a multifaceted mediator in cellular processes 1. The protein plays a critical role in tunneling nanotube (TNT) formation, which are membrane channels that allow intercellular organelle transfer 2. In diabetic nephropathy, TNFAIP2 protects podocytes by facilitating TNT-mediated autophagosome and lysosome exchange, thereby ameliorating lysosomal dysfunction and preventing apoptosis 2. TNFAIP2 promotes angiogenesis through activation of the Rac1-ERK-AP1-HIF1α signaling axis, particularly in breast cancer contexts 3. The protein confers chemotherapy resistance by competing with NRF2 for KEAP1 binding through its DLG motif, preventing NRF2 degradation and activating antioxidant pathways 4. TNFAIP2 expression is frequently dysregulated in various cancers, where it enhances cell proliferation, migration, and drug resistance 15. Genetic polymorphisms in TNFAIP2, particularly rs8126, are associated with increased cancer susceptibility and affect protein expression levels 67. The protein represents a potential therapeutic target and diagnostic biomarker due to its significant roles in inflammation, angiogenesis, and cellular stress responses 5.