Types of Clinical Trials


*Treatment:*

Treatment trials test new treatments (like a new cancer drug, new approaches to surgery or radiation therapy, new combinations of treatments, or new methods such as gene therapy). See Taking Part in Cancer Treatment Research Studies.

*Prevention:*

Prevention trials test new approaches, such as medicines, vitamins, minerals or other supplements that doctors believe may lower the risk of a certain type of cancer. These trials look for the best way to prevent cancer in people who have never had cancer or to prevent cancer from coming back or a new cancer from occurring in people who have already had cancer. See If You Want To Find Ways To Prevent Cancer...Learn About Prevention Clinical Trials for more information.

*Screening:*

Screening trials test the best way to find cancer, especially in its early stages. See Understanding Screening Trials for additional information.

*Quality of Life:*

Quality of Life trials (also called Supportive Care trials) explore ways to improve comfort and quality of life for cancer patients. See Understanding Supportive Care Trials for additional information.