What are the types of cancer clinical trials?

There are several types of cancer clinical trials. Each type is designed to answer a different research question.

• Treatment trials. Most cancer clinical trials are treatment studies that involve people who have cancer. They test new treatments or new ways of using existing treatments.
• Prevention trials. These look at ways to prevent cancer. Most people who take part do not have cancer but are at high risk, or they have had cancer and are at high risk of a new one.
• Screening trials. The goal is to test ways to find cancer before it causes symptoms, when it may be easier to treat.
• Supportive care / palliative care trials. These look at ways to improve the quality of life of people with cancer, especially those who have side effects from cancer and its treatment.

Learning which type a trial is can help you understand its purpose. Your healthcare team can help you explore your options.