Progressi di ricerca sulla terapia e sulla resistenza ai farmaci nel cancro gastrico con instabilità microsatellitica alta.

Mismatch repair-deficient/microsatellite instability-high (dMMR/MSI-H) gastric cancer represents a distinct molecular subtype of gastric cancer. Although immunotherapy has significantly improved survival outcomes in patients with this subtype, its overall efficacy remains limited by primary and acquired resistance. This review provides a comprehensive overview of recent research progress in dMMR/MSI-H gastric cancer,aiming to provide a reference for individualized and precision therapy. (1) It elucidates the molecular definition of dMMR/MSI-H and summarizes the principles, advantages, clinical applications, and limitations of current detection methodologies. (2) It outlines the clinicopathol