The American Association for Cancer Research (AACR) is a non-profit organization dedicated to preventing and curing cancer through research, education, communication, and collaboration. The AACR is the oldest and largest scientific organization in the world focused on every aspect of high-quality, innovative cancer research. The AACR's membership includes more than 47,000 laboratory, translational, and clinical researchers; population scientists; other health care professionals; and patient advocates residing in 127 countries. The AACR marshals the full spectrum of expertise of the cancer community to accelerate progress in the prevention, diagnosis, and treatment of cancer.