Cancer Care Research Clinical trials are research studies that involve people. These studies test new ways to prevent, detect, diagnose or treat diseases. People who take part in cancer clinical trials help researchers learn more about cancer and help develop improved treatments. The treatments that patients receive today are based on the results of past clinical trials. Why does Mission SECU Cancer Center take part in clinical trials? Clinical trials are one of the ways to improve cancer care. Mission SECU Cancer Center takes part in clinical trials to maintain high standards for cancer treatment. How do I decide to take part in a clinical trial? Choosing to join a clinical trial is a decision that only you, those close to you and your medical team can make. As a treatment option, a clinical trial has possible benefits as well as drawbacks.