Andrew S. McCallion, PhD




BSc The Queen’s Univeristy of Belfast, Northern Ireland
PhD University of Glasgow, Scotland


Dr. Andrew McCallion is an associate professor of molecular and comparative pathobiology at the Johns Hopkins University School of Medicine. His research focuses on applying functional genetics to human development and disease. Dr. McCallion was part of a research team at Johns Hopkins whose work explained the interactions between multiple genes resulting in Hirschsprung disease, common disorder with complex genetic inheritance patterns. This work serves as a model for the dissection of common complex disease.

His research focuses on making the connection between gene sequence (and variation therein) and phenotype through the integrated use of contemporary genomic strategies and model systems (mouse, zebrafish and cell culture).

Dr. McCallion received his B.Sc. in genetics from The Queen’s University of Belfast. He earned his Ph.D. in genetics from the University of Glasgow. He completed postdoctoral training at Case Western Reserve University Medical School.

Prior to joining Johns Hopkins, Dr. McCallion was a project leader and staff scientist at Neuropa Ltd. (UK), a biotech startup focused on drug target development for neurodegenerative disorders.

He is a member of the International Mammalian Genome Society, American Society of Human Genetics (ASHG) and Federation of American Societies for Experimental Biology. He was a former Chair of the ASHG program committee, He serves on the editorial board of Genome Research, and is a Faculty of 1000 faculty member in genomics and genetics.