Howard Lederman, M.D., Ph.D., is a Professor of Pediatrics at the Johns Hopkins University School of Medicine and Director of the Immunodeficiency Clinic, the Pediatric Immunology Laboratory, and the Ataxia-Telangiectasia (A-T) Clinical Center at Johns Hopkins Medical Center. Dr. Lederman specializes in the evaluation, diagnostic testing, and long-term management of patients of all ages who have known or suspected primary immunodeficiency diseases. Considered one of the world’s leading experts in the rare neurodegenerative disease A-T, Dr. Lederman’s current laboratory and clinical research focuses on better understanding and treating A-T patients, and will participate as an investigator in Quince’s upcoming Phase 3 clinical trial of its lead asset, EryDex. He is a member of numerous professional societies, including the American Association of Immunologists, the American Society for Microbiology, and the Clinical Immunology Society. Dr. Lederman received a M.D. and Ph.D. from the University of Michigan Medical School and completed a residency in pediatrics at Johns Hopkins Children’s Center and a fellowship in immunology at the Hospital for Sick Children in Toronto. He is board certified by the American Board of Pediatrics.