Most prevention trials are conducted with healthy volunteers, but some are conducted with people who have had cancer and want to prevent recurrence or reduce the chance of developing a new type of cancer. Prevention trials are designed to evaluate the effectiveness of ways to reduce the risk of cancer. These studies may involve medications, vitamins, or other supplements. Other prevention trials study the effect of certain dietary and lifestyle changes, environmental factors, health promotions and interventions.
Screening and Early Detection Trials:
These types of trials are conducted with people who are at a higher risk of getting cancer because of their genetic make up. Screening and Early Detection trials are designed to lower risk of getting cancer when at high genetic risk and to detect cancer earlier.
Treatment trials are conducted with people who have cancer. They are designed to answer specific questions about a new treatment, evaluate the effectiveness of a new treatment, and evaluate the effectiveness of a new way of using a standard treatment.
Cancer Control or Symptom Management Trials:
Cancer Control trials, also known as Symptom Management trials, are conducted with people who have cancer and/or cancer survivors. These trials are designed to study drugs to reduce side effects of chemotherapy and other primary treatments, and to study beneficial effects of nutrition, group therapy, or other approaches.
These types of studies are those that capture a complete summary of patients’ history, diagnosis, and treatment for a particular patient population, such as cancer. Cancer registry studies are designed to recognize and reduce risks associated with treatment and to improve cancer therapy.