GNG11 (G protein subunit gamma 11) encodes a component of heterotrimeric G proteins that modulate transmembrane signaling. As a beta-gamma subunit, GNG11 is essential for GTPase activity, GDP-GTP exchange, and G protein-effector interactions in signal transduction pathways 1. The gene is preferentially expressed in cardiac tissue, particularly the sinoatrial node, where genetic variants in GNG11 influence cardiac pacemaker function through GIRK-channel-mediated membrane hyperpolarization 1. GNG11 expression shows cell-type dependent effects: forced expression induces cellular senescence and reactive oxygen species generation in certain cell lines, with consequent abnormal nuclear morphology 2. In cancer contexts, GNG11 downregulation is associated with improved prognosis across multiple malignancies. In ovarian serous cystadenocarcinoma, high GNG11 expression paradoxically predicts poor outcomes and correlates with disease stage, potentially through ECM-receptor interaction pathways 3. Similarly, GNG11 downregulation in lung adenocarcinoma and gastric cancer associates with better prognosis 4, 5. GNG11 has been identified as a hub biomarker in coronary artery disease, contributing to immune responses and cardiac dysfunction 6. These findings suggest GNG11's role extends beyond canonical G protein signaling to influence cellular senescence, oxidative stress regulation, and tumor biology, with potential clinical implications for cardiac and cancer therapeutics.