Prof. Dr. Huseyin Demirbilek is Professor of Pediatric Endocrinology at Hacettepe University, Ankara, Türkiye. He is a leading expert in congenital hyperinsulinism and monogenic diabetes, with over 100 international publications. He is also Secretary General of the Turkish Society of Pediatric Endocrinology and Diabetes and President of KoHHADER.