Dr. Eirini Kostopoulou is an Assistant Professor of Paediatric Endocrinology at the University of Patras School of Medicine, with advanced clinical and research training in Greece and leading academic hospitals in the United Kingdom. Her expertise spans paediatric obesity, monogenic and syndromic obesity, type one diabetes mellitus, growth and thyroid disorders, congenital hyperinsulinism, and lipid abnormalities. Her research focuses on molecular and genetic mechanisms underlying metabolic and endocrine diseases, including growth hormone signaling, oxidative stress, apoptotic pathways, and rare genetic causes of obesity, with direct translational impact on diagnosis and targeted therapies. She has authored a substantial body of peer-reviewed publications with strong citation impact and has contributed extensively through invited lectures, international collaborations, and multicenter clinical studies. Her work has advanced precision medicine approaches in paediatric endocrinology, improved early diagnosis of rare disorders, and strengthened clinical management strategies with meaningful societal and public health relevance. She has 499 citations from 77 documents with an h-index of 12.