Leonardo D. De Castro, PhD, is a professorial lecturer at the Department of Philosophy, University of the Philippines, Diliman, where he previously served as Department Chair and Centennial Professor. He chairs the Philippine Health Research Ethics Board, a national body that sets policies and regulates research ethics committees in the country. He sits on the National Ethics Committee. He has served on the National Bioethics Advisory Committee and the National Transplant Ethics Committee. He was Senior Research Fellow at the Center for Biomedical Ethics, National University of Singapore and Editor-in-Chief of the Asian Bioethics Review. He also was President of the Asian Bioethics Association, Vice-Chair of the UNESCO International Bioethics Committee, Vice-Chair of the Forum for Ethics Review Committees in Asia and the Pacific, and a Bioethics Consultant to the United Nations, the World Health Organization, the European Union and the European Commission. He represented the Philippines in the UNESCO Inter-Governmental Bioethics Committee. His research interests include research ethics, responsible conduct of research, bioethics teaching, organ transplantation, healthcare worker migration and resource allocation.