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Brief Title: PD-1 Antibody Combined With COX Inhibitor in MSI-H/dMMR or High TMB Colorectal Cancer
Official Title: PD-1 Antibody Combined With COX Inhibitor in MSI-H/dMMR or High TMB Colorectal Cancer: a Single Arm Phase II Study
Study ID: NCT03638297
Brief Summary: PD-1(programmed death protein 1)antibody has been to approved in patients with MSI-H/dMMR advanced cancer and has achieved significant efficacy. It is reported that the objective response rate of Pembrolizumab and Nivolumab are 40% and 31.1% in MSI-H/dMMR (microsatellite instability-high/deficiency mismatch repair )colorectal cancer. What's more, most of the patients who had response for PD-1 antibody achieved a long duration of disease control. However, not all patients with MSI-H/dMMR was sensitive to PD-1 antibody despite it is a biomarker for PD-1 antibody treatment. There were about 50-60% of patients with MSI-H/dMMR were insensitive and we don't know why. What's more, it's reported that tumor mutation burden (TMB) may be another biomarker of response to PD-1 therapy. COX (cyclooxygenase)inhibitor has been proved to prevent adenomas in colorectal and it is safe for most of the patients. Preclinical models also showed that COX inhibitor could act with PD-1 antibody in mice and control disease progress. So, this study aims to evaluated efficacy and safety of combination of PD-1 antibody and COX inhibitor in patients with MSI-H/dMMR or high tumor mutation burden colorectal cancer.
Detailed Description: This is a single arm, phase two study. Eligible patients with advanced MSI-H/dMMR colorectal cancer were assigned to receive BAT1306 plus COX inhibitor. All patients will receive the study regimen every 3 weeks. Chest/abdomen/pelvic CT with IV contrast will be performed to assess clinical response.
Minimum Age: 18 Years
Eligible Ages: ADULT, OLDER_ADULT
Sex: ALL
Healthy Volunteers: No
Gastrointestinal Hospital, Sun Yat-sen University, Guangzhou, Guangdong, China
The Sixth Affiliated Hospital of Sun Yat-sen University, Guangzhou, Guangdong, China
Name: Yanhong Deng, M.D.
Affiliation: Sixth Affiliated Hospital, Sun Yat-sen University
Role: PRINCIPAL_INVESTIGATOR