Continuing anti-EGFR monoclonal antibody after secondary resection significantly prolongs overall survival for patients with metastatic colorectal cancer who were responsive to first-line anti-EGFR monoclonal antibody plus chemotherapy doublet.

The combination of anti-epidermal growth factor receptor (EGFR) monoclonal antibodies (mAb) and doublet chemotherapy is the standard first-line treatment for patients with wild-type metastatic colorectal cancer (mCRC). Some patients may require secondary resection after first-line treatment. However, it remains unclear whether targeted therapy should be continued after liver resection.