For all searches and for all browse results, select the Search button at the bottom after you have refined your criteria.
Phase I clinical trials are typically not disease specific and can be searched separately by clicking on the Phase I checkbox. (If you do not select Phase I, trials in any phase that match your other search terms will be retrieved.)
Cancer Prevention clinical trials test whether taking certain medicines, vitamins, minerals, or food supplements may lower the risk of a certain type of cancer.
Cancer Control clinical trials test whether certain drugs reduce side effects from chemotherapy and other primary treatments.