CD82 is a transmembrane glycoprotein belonging to the tetraspanin family that functions as a tumor metastasis suppressor through multiple mechanisms 12. As a structural component of tetraspanin-enriched microdomains (TERMs), CD82 serves as a platform for receptor clustering and modulates diverse cellular processes including adhesion, migration, and signaling 12. CD82 suppresses metastasis primarily by inhibiting cancer cell motility and invasiveness through associations with cell adhesion molecules, growth factor receptors, and signaling molecules within membrane microdomains 1. The protein attenuates epidermal growth factor receptor (EGFR) signaling by facilitating ligand-induced endocytosis and receptor desensitization 34. Additionally, CD82 modulates membrane heterogeneity by altering microdomains, trafficking, and topography, which subsequently affects membrane molecule functions and cellular activities 2. Loss of CD82 expression is associated with advanced cancer stages and increased metastatic potential across various human cancers 53. Recent research reveals CD82 also regulates vascular inflammation by controlling endothelial leakage through membrane cholesterol accessibility and GTPase signaling balance 6. These diverse functions make CD82 both a prognostic marker and potential therapeutic target for cancer treatment 54.