Neoadjuvant Dupilumab and Toripalimab in MSS CRC Subjects With Resectable Liver Metastases

This is a Phase 1b/2 study of neoadjuvant dupilumab and toripalimab in MSS CRC subjects with resectable liver metastases. The primary objective of Phase 1b is to determine the safety of neoadjuvant immunotherapy in MSS CRC subjects with resectable liver metastases. The primary objective of Phase 2 is to determine the efficacy of immunotherapy in MSS CRC subjects with resectable liver metastases as measured by the percentage of subjects achieving a major pathological response (MPR). Eligible subjects will receive dupilumab (600mg on Day 1 and 300mg on D15 ±2 days) and toripalimab 240mg on Day 1 before planned surgery. Dupilumab is administered as a subcutaneous injection. Toripalimab is administered intravenously over 60 minutes or longer. Based on clinical signal in the current cohort and new findings in animal models, additional cohorts will be added to test different immunotherapy combinations in the same patient population with the same endpoints and statistical method in the future.