Dr. Karolis Ažukaitis is a Senior Pediatric Nephrologist at Vilnius University Hospital Santaros Clinics, Associate Professor of Pediatrics at the Faculty of Medicine, Vilnius University, and a Council Member of the European Society for Paediatric Nephrology. His clinical and research interests include chronic kidney disease and its progression biomarkers, cardiovascular complications in childhood, pediatric arterial hypertension, and hemolytic uremic syndrome.