Enhancing GBP2 activity in breast cancer, possibly via Drp-1 agonists, autophagy inducers, or small molecule activators targeting its GTPase domain, could suppress mitochondrial replication and tumor growth, capitalizing on its protective effects against metastasis—a strategy assessable through mitochondrial function assays, tumor size monitoring, or drug sensitivity screens [36,38]. The gene discussed is GBP2; the disease is neoplasm.