Margaret Fitzsimons

Margaret Fitzsimons, MBChB, is an Assistant Professor in the Department of Medicine, Division of Nephrology. Her clinical focus includes hemodialysis and peritoneal dialysis, with leadership as Medical Director of a free-standing dialysis unit in Mechanicsburg. She actively supervises medical students, residents, and fellows during outpatient clinical rotations and facilitates Problem-Based Learning (PBL) sessions for first-year medical students.

• MBChB, University of Galway (1981)
• Residency, University of Connecticut (1995)
• Fellowship, University of Pennsylvania (1998)

Dr. Fitzsimons' research bridges nephrology and immunology, centering on autoimmune mechanisms in kidney diseases. Her work investigates humoral immune responses, particularly in transgenic mouse models engineered to study basement membrane antigen reactivity, laminin interactions, and immunoglobulin receptor dynamics. Key themes include the pathogenesis of nephritis and the role of autoantibodies in renal dysfunction.

Her publications (1997–2002) highlight trends in nephrology and immunology, with a focus on basement membrane autoimmunity, transgenic mouse models, and nephritogenic immune pathways. These studies explore genetic and molecular drivers of autoantibody formation and their clinical implications in kidney disease.

Dr. Fitzsimons contributes to medical education through clinical mentorship and PBL instruction, emphasizing renal physiology and pathology. She is a member of the American Society of Nephrology and the Pennsylvania Medical Society, aligning her clinical and research work with broader professional standards in nephrology.