What is a clinical trial and how is it decided who will participate?
A. Clinical trials are studies that help evaluate a new treatment. Clinical trials do two things: they attempt to answer scientific questions and they find new and better ways to help cancer patients. An institutional review board (IRB) carefully reviews each clinical trial before patients begin participating. Also, some studies are reviewed by government agencies, such as the National Cancer Institute (NCI) and the National Institutes of Health (NIH).