Dr. Gallagher focuses on research related to inborn errors of metabolism. These disorders are due to mutations in genes encoding enzymes or transporters critical for proper function of one or more biochemical pathways.  Her primary research interests are in urea cycle defects and in disorders of neurotransmission.  Current projects include understanding and elucidating the basis of liver injury in urea cycle defects; and optimizing the identification and treatment of pyridoxine-dependent epilepsy, a treatable cause of early infantile epileptic encephalopathy.