TMBIM6 (transmembrane BAX inhibitor motif containing 6) is an endoplasmic reticulum-resident protein that functions as a critical regulator of cellular survival and metabolism. The protein serves as a calcium leak channel and acts as an anti-apoptotic factor by inhibiting BAX/BAK-mediated cell death pathways 1. TMBIM6 mechanistically enhances mTORC2 assembly and activation through ER-leaked calcium, which subsequently stimulates AKT signaling, glycolysis, protein synthesis, and lipid metabolism 1. The protein is transcriptionally regulated by Sp1 and protein kinase C (PKC), with PKC activation enhancing TMBIM6 expression through increased nuclear translocation of Sp1 2. TMBIM6 demonstrates significant clinical relevance, being overexpressed in multiple cancer types including breast, prostate, lung, and cervical cancers, where high expression correlates with poor survival outcomes 12. The protein promotes cancer progression by supporting tumor growth and has been identified as a potential therapeutic target 13. Additionally, TMBIM6 plays roles in mitochondrial quality control and mitophagy regulation, particularly in cardiovascular contexts like atherosclerosis 4. Therapeutic targeting of TMBIM6 with antagonists like BIA shows promise in suppressing tumor formation and enhancing cancer cell apoptosis 13.