Erin Margaret Janssen, MD, PhD

Erin Janssen, MD, PhD is the Director of the Division of Pediatric Rheumatology at the C.S. Mott Children’s Hospital. Dr. Janssen earned her doctorate in Immunology and degree in medicine at Duke University Medical School. She completed her pediatric residency and fellowship in pediatric rheumatology at Boston Children’s Hospital. Dr. Janssen remained on staff at Boston Children’s Hospital as co-director of the Multiple Autoimmunity and Immunodeficiency (MAID) clinic until her move in 2022 to C.S Mott.

Dr. Janssen’s clinical interests and expertise focus on the care of children with polyautoimmunity, the combination of autoimmunity and immunodeficiency, and autoinflammatory conditions. She has expertise in advanced immunologic and genetic testing for the diagnosis of disorders of immune dysregulation. Dr. Janssen also has experience in caring for children with arthritis in combination with inflammatory bowel disease and primary immunodeficiencies.

Autoimmune disease, autoinflammatory conditions, primary immunodeficiencies, arthritis related to inflammatory bowel disease and other immune diseases, general pediatric rheumatology

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Dr. Janssen runs a laboratory that focuses on determining the underlying genetic and molecular causes of immune dysregulation. Her laboratory has generated numerous mouse models recapitulating human allergic, autoimmune, and inflammatory diseases. Through the study of patient provided samples and mouse models, her research has provided insights into the underlying causes of a variety of immune-mediated diseases.