Dr. Sigurdis Haraldsdottir, M.D., Ph.D. is an Assistant Professor of Medicine at Stanford University School of Medicine. She received her medical degree and master's degree in medical sciences from the University of Iceland. She did her Internal Medicine training at Boston University Medical Center and training in Medical Oncology at the Ohio State University, before joining the faculty at Stanford. Her clinical and research focus is in gastrointestinal malignancies with a focus on mismatch repair deficient cancers, particularly colorectal cancer. She is conducting population-based research on Lynch syndrome - an inherited cancer syndrome, and recently completed a nation-wide study on Lynch syndrome in Iceland. She received her Ph.D. in Medical Sciences in 2017 from the University of Iceland. Her interests also focus on investigating colorectal cancer genomics, and their effect on outcomes and treatment implications.