Professor Dagan Wells has been actively involved in preimplantation genetic testing (PGT) and the study of human gametes and embryos for over 25 years. He spent several years at University College London, where he accomplished the first comprehensive chromosome analysis of cells from human embryos. He later joined the faculty of Yale University and served as a Director for Reprogenetics, at the time one of the largest providers of PGT services. He is now an Associate Professor at the University of Oxford, based at the Nuffield Department of Women’s and Reproductive Health. He is also a research Director for the world’s largest network of IVF clinics (IVI-RMA), overseeing their new state-of-the-art research facility in Oxford. Dagan’s work has led to the publication of 200 scientific papers and in the last decade has been shortlisted for eighteen major conference prizes (ASRM and ESHRE), winning ten. Dagan is a Fellow of the Royal College of Pathologists, the Royal Society of Biology, the Royal College of Obstetricians and Gynaecologists and the Institute of Biomedical Science. He currently serves on the Boards of several international journals and professional societies.