The Multinational Association of Supportive Care in Cancer (MASCC) is an international multidisciplinary organization dedicated to research, practice, and education in all aspects of supportive care for people with cancer, regardless of the stage of their disease. Membership is open to medical oncologists, nurses, dentists, dental hygienists, pharmacists, psychologists, social workers, and others interested in supportive care. MASCC holds an annual joint meeting with the International Society of Oral Oncology (ISOO), which addresses oral complications secondary to cancer and its treatment.