Genomic profiles and their associations with microsatellite instability status, tumor mutational burden, and programmed death ligand 1 expression in Chinese patients with colorectal cancer.

Background: Colorectal cancer (CRC) is among the most prevalent malignancies globally, with a rising incidence observed in younger demographics. Despite surgical resection remaining the cornerstone of treatment, metastatic CRC poses significant therapeutic challenges. Immunotherapy, a mode of treatment that leverages the patient's immune system, presents a promising frontier in CRC management, particularly for late-stage cases with limited treatment options.