A Study to Explore the Third-line Treatment of Fruquintinib Combined With Serplulimab in Advanced Non-liver-limited Metastatic Colorectal Cancer: a Single-center, Phase 2 Study

Serplulimab is an anti-PD-1 monoclonal antibody, and fruquintinib is a tyrosine kinase inhibitor that inhibits tumor angiogenesis. Studies have shown that immunotherapy combined with fruquintinib has preliminary efficacy in the treatment of colorectal cancer. Whether serplulimab combined with fruquintinib can improve the prognosis of patients with colorectal cancer remains to be determined. Therefore, the study is to evaluate the efficacy and safety of serplulimab combination with fruquintinib in patients with microsatellite stabilized mCRC who have failed standard therapy.