Dr. Castro is Director of the Cancer Program at the Massachusetts General Hospital (MGH) Center for Systems Biology, Instructor in Medicine at Harvard Medical School, and Attending Physician at the MGH Cancer Center. As a Regent’s Scholar, Dr. Castro attended the University of California – Berkeley leading to receipt of both bachelor’s and master’s degrees. He attained his medical degree from the University of California – San Francisco where he also pursued Internal Medicine residency training. Dr. Castro completed a combined medical oncology fellowship between the MGH and the Dana-Farber Cancer Institute in Boston. During this period, he also received a master’s in medical sciences from Harvard Medical School. Dr. Castro is a translational gynecologic oncologist with experience developing and harnessing nanotechnology and molecular imaging platforms for ovarian cancer tumor detection and serial analyses. He currently focuses on advancing novel profiling technologies to generate true integrated readouts of DNA, RNA, and protein within scant ovarian cancer specimens down to the single cell level. He has served as Chair of the In Vitro Diagnostics Working Group within the NCI Alliance for Nanotechnology in Cancer. Dr. Castro’s research has included funding by the National Institutes of Health, Department of Defense, and the MGH Executive Committee on Research.