David Sidransky, M.D. has served as the chairman of our board of directors since November 2017. Since July 1994, Dr. Sidransky has been the Director of the Head and Neck Cancer Research Division at Johns Hopkins University School of Medicine’s Department of Otolaryngology and Professor of Oncology, Cellular & Molecular Medicine, Urology, Genetics, and Pathology at the John Hopkins University School of Medicine. Dr. Sidransky currently serves on the board of directors of Galmed Pharmaceuticals Ltd., a biopharmaceutical company, Rosetta Genomics Ltd., a molecular diagnostics company, Biond Biologics Ltd., a biotechnology company, Tamir Biotechnology Ltd., a biotechnology company, Orgenesis Inc., a pharmaceutical manufacturing company, and is the chairman of the board of directors of Advaxis, Inc., a biotechnology company and Champions Oncology, Inc., a biopharmaceutical company. Previously, Dr. Sidransky served on the board of directors of Akari Therapeutics plc. In addition, Dr. Sidransky served as Director of the American Association for Cancer Research (AACR) from 2005 to 2008. Dr. Sidransky received a B.S. in Chemistry from Brandeis University and an M.D. from Baylor College of Medicine where he also completed his residency in Internal Medicine. We believe that Dr. Sidransky’s pioneering academic work, extensive medical and scientific knowledge and experience serving on public company boards of directors qualify him to serve on our board of directors.