Doyen Nguyen, OP, M.D, S.T.D., who was an academic hematopathologist, is currently a Catholic moral theologian and bioethicist. A graduate of Temple University Medical School (Philadelphia, USA) and a scholar of the Leopold Schepp Foundation, she is a lay Dominican who, in addition to having worked (and taught medical residents/fellows) at various university medical centers on both sides of the Atlantic Ocean, was also a professor of theology at the Pontifical University of St. Thomas Aquinas (Angelicum) in Rome (Italy) where she obtained her doctorate in moral theology, with a special focus on end-of-life ethics. She has authored books and articles both in medicine and in moral theology/bioethics. Among her recent publications is the 600-page monograph The New Definitions of Death for Organ Donation: A Multidisciplinary Analysis from the Perspective of Christian Ethics (Peter Lang, April 2018. ISBN 978-3-0343-3277-4). Her latest academic article on the topic of brain death is “Does the Uniform Determination of Death Act Need to Be Revised?” (The Linacre Quarterly, 87(3):317-333, 2020)