Registry Study in MSI/dMMR Solid Tumors

This study is a multi-center, non-interventional, prospective clinical observational study, aiming to evaluate the effectiveness and safety of subsequent treatment in dMMR/MSI solid tumor patients who have never received ICIs under real-world conditions. Particular attention is paid to the efficacy in populations where treatment plans are adjusted based on ctDNA, and potential predictive or prognostic biomarkers are explored.