National Cancer Institute Physician Data Query
Office of Communications and Education
About National Cancer Institute Physician Data Query
The Physician Data Query PDQ is NCI’s comprehensive cancer database. It contains summaries on a wide range of cancer topics; a registry of 8,000+ open and 19,000+ closed cancer clinical trials from around the world; and a directory of professionals who provide genetics services. PDQ also contains the NCI Dictionary of Cancer Terms, with definitions for 6,800+ cancer and medical terms, and the NCI Drug Dictionary, which has information on 2,300+ agents used in the treatment of cancer or cancer-related conditions.