Dragos Cretoiu, MD, PhD, is Full Professor and Head of the Medical Genetics Discipline at Carol Davila University of Medicine and Pharmacy, Bucharest. At the Alessandrescu-Rusescu National Institute for Mother and Child Health he practises as a consultant in medical genetics (medic primar), holds the rank of Scientific Researcher Grade I and coordinates the Regional Medical Genetics Center; he also founded the university’s Institute for Research and Development in Genomics (ICDG). His research has moved from tissue ultrastructure, where he co-discovered telocytes, through the molecular layers that describe cells and their signals (transcriptomics and microRNAs, extracellular vesicles, mass-spectrometry proteomics, DNA methylation) to the clinical interpretation of whole genome sequencing (WGS) in prenatal, reproductive and rare-disease genetics. He is Vice-President of the Personalized Medicine Commission of the Romanian Ministry of Health.