The American Society of Clinical Oncology (ASCO) is a non-profit organization, founded in 1964, with overarching goals of improving cancer care and prevention and ensuring that all patients with cancer receive care of the highest quality. More than 25,000 oncology practitioners belong to ASCO, representing all oncology disciplines (medical, radiation, and surgical oncology) and subspecialties. Members include physicians and health-care professionals participating in approved oncology training programs, oncology nurses, and other practitioners with a predominant interest in oncology.