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The date on each summary ("Date Last Modified") is the date of the most recent change.
Physician Data Query (PDQ) is the National Cancer Institute's (NCI's) comprehensive cancer information database.
The PDQ database contains summaries of the latest published information on cancer prevention, detection, genetics, treatment, supportive care, and complementary and alternative medicine. The health professional versions have detailed information written in technical language.
It is meant to inform and help patients, families, and caregivers.
It does not give formal guidelines or recommendations for making decisions about health care.
Some clinical trials are open only to patients who have not started treatment.
Editorial Boards write the PDQ cancer information summaries and keep them up to date.
More information on insurance coverage is available on on the Managing Cancer Care page.More information about contacting us or receiving help with the website can be found on our Contact Us for Help page.Questions can also be submitted to through the website’s E-mail Us.You can search for trials based on the type of cancer, the age of the patient, and where the trials are being done.General information about clinical trials is also available.The summaries are reviewed regularly and changes are made when there is new information.