What happens in phase II and phase III cancer treatment clinical trials?
• A phase II cancer treatment trial usually focuses on a particular type of cancer and provides preliminary information on the anticancer effect of a new drug or therapy. • A phase III cancer treatment trial compares a new treatment (or new use of a standard one) with the current standard treatment. • Why participate in a cancer prevention clinical trial? People who do not have cancer can take part in cancer prevention clinical trials to try to prevent the disease from occurring. Some people who have had cancer can participate in prevention trials to try to reduce the chance of either developing a new type of cancer or to prevent the cancer from recurring (coming back). Prevention clinical trials are important because through research, scientists hope to determine what steps are effective in preventing cancer or finding cancer early. There are two kinds of cancer prevention clinical trials. Action studies (doing something) focus on finding out whether actions people take, such as exerc
