This is a single-center, open, single-arm study exploring the efficacy and safety of fruquintinib combined with FOLFIRI/FOLFOX in the treatment of RAS-mutated metastatic colorectal cancer (mCRC) who failed standard therapy. Patients will receive fruquinitinib combined with chemotherapy (FOLFOX or FOLFIRI regimens), which depend on the previous chemotherapy regimen (chemotherapy switch).
RAS mutations are found in nearly half of colorectal cancer patients. However, there is no targeted driver gene drugs have been approved for RAS-mutated patients. For RAS mutant metastatic colorectal cancer, the commonly used treatment regimen is bevacizumab combined with chemotherapy.