Neoadjuvant FOLFOXIRI Chemotherapy in Resectable Liver Metastasis of Colorectal Cancer

For the patients Neoadjuvant FOLFOX chemotherapy is recommended for the resectable liver metastasis colorectal cancer. Neoadjuvant chemotherapy could suppress tumor, reduce metastasis, inhibit recurrence and improve long-term prognosis. Moreover, neoadjuvant chemotherapy could provide evidence about tumor response to drugs for the adjuvant chemotherapy. Furthermore, according to the biological behavior of tumors observed by neoadjuvant chemotherapy, unnecessarily excessive surgery could be avoided. However, some studies suggested that drug efficiency was consistent with resection rate. And FOLFOXIRI has been observed efficacy in the treatment of metastatic colorectal cancer with manageable toxicities. Therefore, we evaluate the efficacy and safety of neoadjuvant FOLFOXIRI chemotherapy in the patients with resectable liver metastasis of colorectal cancer to achieve higher resection rate and longer survival. In this prospective study, 30 patients with resectable colorectal liver metastases were treated with neoadjuvant FOLFOXIRI chemotherapy. After 4 cycles of neoadjuvant chemotherapy, the liver metastases will be removed. If there are primary bowel lesions, they will be resected together. Safety profile was recorded based on NCI Common Terminology Criteria for Adverse Events version 4.0 (NCI-CTCAE v4.0). Objective response was evaluated by Response Evaluation Criteria in Solid Tumors version 1.1 (RECIST 1.1). Before treatment and after 4 cycles of neoadjuvant chemotherapy, we will evaluate tumor metabolic response via FDG-PET and monitor the dynamic changes of peripheral blood ctDNA.