A Study of Neoadjuvant QL1706 in Participants With Untreated dMMR/MSI-H Resectable Colon Cancer

Inclusion Criteria: * Signed written informed consent; * Eastern Cooperative Oncology Group Performance Status of 0 or 1 * Untreated pathologically confirmed colon adenocarcinoma * Radiographic assessment showed a resectable stage IIB-III based on AJCC Stage VIII (cT4 or cN+ only). * Has a tumor demonstrating the presence of MSI-H/ dMMR * Adequate organ function as described in the protocol Exclusion Criteria: * Previously received any antitumor therapy for the disease under study, including surgery, radiotherapy, chemotherapy, targeted therapy, immunotherapy, etc * Has distant metastatic disease. * Has an active autoimmune disease that has required systemic treatment in past 2 years * Has know history of, or any evidence of interstitial lung disease; * Has an active infection requiring systemic therapy