Choose a clinical trial by name or by cancer types listed below for information on these studies to prevent cancer. These trials are no longer accepting new participants, but may not be completed.
All studies are supported by NCI, but not all originate from the Division of Cancer Prevention. For cancer types not listed here, visit NCI's Clinical Trials information webpage.
The Study of Tamoxifen and Raloxifene
Breast Cancer Prevention Trial
Cervical Cancer
Colon Cancer
Endometrial Cancer
Esophageal Cancer
Melanoma
Oropharyngeal Cancer
Prostate Cancer
Selenium and Vitamin E Cancer Prevention Trial (SELECT)
Prostate Cancer Prevention Trial
Skin Cancer, Nonmelanomatous (Squamous and Basal Cell)
Stomach (Gastric) Cancer
