Dr. Crombez joined Ultragenyx following the acquisition of Dimension Therapeutics in November 2017. As Chief Medical Officer and Executive Vice President, Dr. Crombez is responsible for strategic leadership of the clinical development and translational research programs, and oversees global development functions including Clinical Development, Clinical Operations, BioMetrics, Endpoint Development and Strategy, Regulatory Affairs and Drug Safety/Pharmacovigilance.
Previously, Dr. Crombez served as Ultragenyx’s Chief Medical Officer for gene therapy and inborn errors of metabolism, overseeing global clinical development and execution for the company’s gene therapy programs. At Dimension Therapeutics, Dr. Crombez served as Chief Medical Officer and led the clinical development efforts for clinical gene therapy programs in hemophilia B, hemophilia A, ornithine transcarbamylase (OTC) deficiency and glycogen storage disease type Ia (GSDIa). Previously, he worked at Shire in its Human Genetics Therapy business unit.
Dr. Crombez is an appointed industry representative on the FDA Cellular, Tissue and Gene Therapies Advisory Committee. Before joining industry, he was assistant professor, Department of Pediatrics, Division of Medical Genetics at the David Geffen School of Medicine at the University of California, Los Angeles (UCLA).
Dr. Crombez is a board-certified clinical geneticist and completed residencies in pediatrics and medical genetics and a fellowship in clinical biochemical genetics at the UCLA School of Medicine. Dr. Crombez obtained his B.S. degree in biology from the University of Michigan, Ann Arbor, and his M.D. degree from Wayne State University School of Medicine, Detroit.
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