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Envafolimab Monotherapy or Envafolimab + CAPEOX as Neoadjuvant Therapy for Locally Advanced Colorectal Cancer
Sponsor: Sun Yat-sen University
Summary
There exists substantial evidence suggesting that patients diagnosed with MSI-H/dMMR colorectal cancer can derive benefits from immunotherapy in the management of advanced colorectal cancer. In cases of locally advanced colorectal cancer exhibiting microsatellite instability (dMMR/MSI-H), patients exhibit low responsiveness to neoadjuvant chemotherapy, resulting in minimal rates of complete tumor remission and downstaging. Nevertheless, initial exploratory studies, characterized by modest sample sizes, reveal a favorable therapeutic effect of neoadjuvant immunotherapy in this particular patient population. Envafolimab monoclonal antibody, the first PD-L1 antibody developed and manufactured in China, possesses noteworthy practical and societal value in the context of exploratory clinical research on neoadjuvant immunotherapy for locally advanced MSI-H/dMMR colorectal cancer patients. The objective of this study is to evaluate the safety and efficacy of envafolimab monoclonal antibody (PD-L1) as neoadjuvant therapy for locally advanced MSI-H/dMMR colorectal cancer through a prospective, multi-cohort phase II clinical trial. Additionally, this study aims to investigate the effectiveness and safety of envafolimab monoclonal antibody in combination with CAPEOX as a neoadjuvant treatment regimen for locally advanced pMMR colorectal cancer.
Official title: A Prospective, Single-center, Multi-cohort Study of Envolimab Monotherapy or Envafolimab in Combination With CAPEOX as Neoadjuvant Therapy for Locally Advanced Colorectal Cancer.
Key Details
Gender
All
Age Range
18 Years - 75 Years
Study Type
INTERVENTIONAL
Enrollment
55
Start Date
2023-07-01
Completion Date
2026-07-01
Last Updated
2024-04-12
Healthy Volunteers
No
Interventions
Envafolimab
Upon confirming eligibility based on inclusion criteria and obtaining signed informed consent, the patient will be administered Envafolimab at a dose of 300mg every 3 weeks (Q3W) for a total of 4 cycles, starting on Day 1.
CAPEOX
The neoadjuvant treatment regimen will consist of Oxaliplatin at a dose of 130mg/m2, administered intravenously over a period of more than 2 hours on Day 1, every 3 weeks; and Capecitabine at a dose of 1000mg/m2, orally, twice daily from Day 1 to Day 14, every 3 weeks, for a total of 4 cycles.
Locations (1)
Sun Yat-Sen University Cancer Center
Guangzhou, Guangdong, China