Katherine Anne Marzan

Katherine Anne Marzan, MD, is an Associate Professor of Clinical Pediatrics at the University of Southern California, serving as Division Chief of Rheumatology and Interim Director of the Infusion Center. Her work focuses on pediatric rheumatology, particularly juvenile idiopathic arthritis (JIA), systemic autoimmune disorders, and autoinflammatory diseases. She leads clinical trials evaluating biologic therapies like tofacitinib, canakinumab, and adalimumab, emphasizing long-term safety and efficacy in pediatric populations.

Research interests include optimizing treatment regimens for systemic JIA remission, managing colchicine-resistant familial Mediterranean fever, and understanding infectious risks in immunosuppressed rheumatic patients. Dr. Marzan has published extensively on drug efficacy, disease burden analysis, and case reports of rare conditions like recurrent Kawasaki disease and Takayasu arteritis.

Her clinical roles involve multidisciplinary care coordination, particularly in complex cases requiring infusion therapies. She has contributed to national registries (e.g., STRIVE) and multinational observational studies assessing quality-of-life impacts in hereditary periodic fever syndromes.