Gregory Costain

Dr. Gregory Costain is a physician-scientist who specializes in the diagnosis and management of rare genetic conditions in children. Costain joined the Division of Clinical and Metabolic Genetics as Staff Physician in 2020 after completing his residency training at the University of Toronto. He directs the Genetic Epilepsy and severe Neurological Impairment Clinic (GENIC) at SickKids. Costain is also a Scientist in Genetics and Genome Biology, at the SickKids Research Institute. His research program is focused on understanding the causes and consequences of rare variation in the human genome. His lab uses genome sequencing and computational approaches to discover new disease genes, genotype-phenotype associations, and pathways to precision treatments.