Ask your doctor about clinical trials for which you might qualify. You can find information about the importance of participating in clinical trials from the Clinical Trials section of our website. You can also contact the National Cancer Institute (NCI) Cancer Information Service at 800.422.6237, visit the NCI website for listings, or visit BreastCancerTrials.org, which provides easy to read descriptions of open breast cancer trials as well as tools to search for them.