<p>Dr. Toshiyuki Matsuyama, MD, PhD, is an otolaryngologist at the Department of Otolaryngology–Head and Neck Surgery, Gunma University, Japan. His clinical and research interests focus on chronic rhinosinusitis, type 2 inflammatory airway diseases, and the application of biologic therapies in rhinology. His work aims to bridge clinical phenotypes with underlying immunologic endotypes to advance precision medicine and individualized treatment strategies in airway inflammatory diseases.</p>