RecruitingPhase 2Drug trialEfficacy and Safety of Trifluridine/Tipiracil Combined With Fufuquitinib for Third-line Treatment of mCRCTo evaluate the efficacy and safety of trifluridine/tipiracil combined with fufuquitinib versus trifluridine/tipiracil and fufuquitinib in patients with unresectable metastatic colorectal cancer.