Dr. Marsh is a Professor of Clinical Pediatrics affiliated with the University of Cincinnati and an Immunologist and Bone Marrow Transplant Physician at Cincinnati Children’s Hospital. She is Co-Director of the Diagnostic Immunology Laboratory, Director of the Primary Immune Deficiency Program, and Clinical Director of the HLH Center of Excellence at Cincinnati Children’s Hospital. Dr. Marsh’s clinical and research interests center around HLH, XIAP deficiency, inborn errors of immunity, and allogeneic hematopoietic cell transplantation for patients with inborn errors of immunity.