Nancy E. Davidson is the executive director and president of Seattle Cancer Care Alliance, senior vice president, director of clinical oncology at Fred Hutchinson Cancer Research Center and head of the Division of Medical Oncology at the University of Washington School of Medicine. She focuses her research on breast cancer treatments and the genes that are mutated in various forms of breast cancer. She was president of American Association for Cancer Research from 2015 to 2016 and president of American Society of Clinical Oncology from 2007 to 2008.