Dr. Tan is a clinical geneticist with an interest in a broad range of rare and ultra-rare Mendelian disorders, including pediatric cancer predisposition syndromes. He is also interested in the design of clinical trials for rare genetic syndromes. After graduating from medical school in Nottingham (United Kingdom), he undertook training in pediatrics and clinical genetics in Nottingham, Bury St. Edmunds, Cambridge (Cambridgeshire), and Boston. He has been on the faculty at Boston Children’s Hospital since 2006 and has been actively involved in clinical research studies on Angelman syndrome since then. He leads the Boston site of the Angelman Syndrome Natural History study and was the overall principal investigator of a multi-center phase II/III clinical trial of levodopa in Angelman syndrome.

He is also interested in Bohring-Opitz syndrome and serves on the Medical Advisory Board of the Bohring- Opitz Syndrome Foundation.

In addition, he now serves as the site PI of a gene therapy trial in adults with ornithine transcarbamylase deficiency.