This resource explains how immunotherapy helps the immune system find and attack cancer cells. It describes how checkpoint inhibitors work and how certain drugs remove “brakes” on the immune system so it can respond more effectively.
It also introduces biomarker testing and explains how biomarkers such as MSI-H and dMMR can help determine whether immunotherapy is a possible treatment option for cancer patients. An overview of common immunotherapy treatments for colorectal cancer and possible side effects is included to support informed patient-provider discussions.

