Exploration of Therapeutic Strategies for NeoRAS Wild-type Metastatic Colorectal Cancer Based on Circulating Tumor DNA: an Open, Prospective, Phase II Study
Following systemic therapy in metastatic colorectal cancer(mCRC),RAS (including KRAS, NRAS and HRAS gene) status may change from a mutant(MT) to a wild-type(WT),a phenomenon known as NeoRAS WTmCRC.NeoRAS WT can be detected by longitudinal circulating tumor DNA(ctDNA) analysis.Therefore, this prospective phase II Study was design to explore the detection rate of peripheral blood ctDNA testing for NeoRAS WT and its guiding value for subsequent treatment for mCRC.
• Metastatic colorectal cancer with tissue RAS mutation-type;
• ECOG (Eastern Cooperative Oncology Group) performance score is 0-1;
• Obtaining informed consent;
• Surgical specimens or punctured tissue specimens containing tumors can be obtained; 10ml of peripheral blood can be obtained