The American Gastroenterological Association (AGA) is the trusted voice of the GI community. Founded in 1897, the AGA has grown to include more than 16,000 members from around the globe who are involved in all aspects of the science, practice and advancement of gastroenterology. The AGA, a 501(c6) organization, administers all membership and public policy activities, while the AGA Institute, a 501(c3) organization, runs the organization's practice, research and educational programs. On a monthly basis, the AGA Institute publishes three highly respected journals, Gastroenterology and Clinical Gastroenterology and Hepatology, and Cellular and Molecular Gastroenterology and Hepatology. The organization's annual meeting is Digestive Disease Week®, which is held each May and is the largest international gathering of physicians, researchers and academics in the fields of gastroenterology, hepatology, endoscopy, and gastrointestinal surgery. The AGA Research Foundation provides digestive disease research grants on behalf of the AGA Institute.
Learn more information about the American Gastroenterological Association, including how to join.
Founded in 1964, the American Society of Clinical Oncology (ASCO) is the world’s leading professional organization that represents physicians who treat people with cancer. ASCO’s members set the standard for patient care worldwide and lead the way in clinical research aimed at improving the prevention, diagnosis, and treatment of cancer. ASCO’s efforts also are directed toward advocating for policies that provide access to high-quality care for all patients with cancer and at supporting the increased funding for clinical and translational research. ASCO has nearly 45,000 members worldwide, with international members from more than 140 countries. The Society is led by President Bruce E. Johnson, MD, FASCO, of the Dana-Farber Cancer Institute, and CEO Clifford A. Hudis, MD, FACP, FASCO. Learn more about ASCO.
The American Society for Radiation Oncology (ASTRO) is the premier radiation oncology society in the world, with more than 10,000 members who are physicians, nurses, biologists, physicists, radiation therapists, dosimetrists and other health care professionals that specialize in treating patients with radiation therapies. As the leading organization in radiation oncology, the Society is dedicated to improving patient care through professional education and training, support for clinical practice and health policy standards, advancement of science and research, and advocacy. ASTRO publishes three medical journals, International Journal of Radiation Oncology, Biology, Physics, Practical Radiation Oncology, and Advances in Radiation Oncology, developed and maintains an extensive patient website; and created the Radiation Oncology Institute, a non-profit foundation to support research and education efforts around the world that enhance and confirm the critical role of radiation therapy in improving cancer treatment. Learn more about ASTRO.
The Society of Surgical Oncology (SSO) is the premier organization for surgeons and health care providers dedicated to advancing and promoting the science and treatment of cancer. The Society’s focus on all solid-tumor disease sites is reflected in its Annual Cancer Symposium, monthly scientific journal (Annals of Surgical Oncology), educational initiatives, and committee structure. The Society’s mission is to improve multidisciplinary patient care by advancing the science, education, and practice of cancer surgery worldwide. Learn more about the Society of Surgical Oncology.