11 Things to Know about Cancer Prevention Clinical Trials 11 Things to Know about Cancer Prevention Trials 1.
Clinical trials are research studies that involve people.
Each study tries to answer scientific questions and to find better ways to prevent, diagnose or treat cancer. See Introduction to Clinical Trials 2. What Participants Need to Know. A clinical trial is one of the stages of a long and careful cancer research process . Getting promising results from testing a new drug on mice, for example, is a preliminary step to human research studies.