Dr. Jaejoon Lee is Professor of Medicine and Chief of the Division of Rheumatology at Samsung Medical Center, Sungkyunkwan University School of Medicine in Seoul, Korea. A board-certified rheumatologist, he specializes in the diagnosis and management of autoimmune and inflammatory diseases, including complex systemic rheumatic disorders. Dr. Lee has extensive clinical and academic experience in caring for patients with conditions such as rheumatoid arthritis, systemic lupus erythematosus, and vasculitis at one of Asia’s leading tertiary referral hospitals. His work focuses on advancing clinical care and improving outcomes for patients with chronic rheumatic diseases through evidence-based practice and multidisciplinary collaboration. He is recognized for his leadership in rheumatology and his contributions to clinical medicine and academic practice.