Doctor Vlad Ratziu is a Professor of Hepatology at Sorbonne University and performs his hospital work at the Pitié-Salpêtrière Hospital and research at the Institute for Cardiometabolism and Nutrition (ICAN) in Paris, France. Professor Ratziu received his medical training at Paris V, René Descartes University; he then completed a 2-year research fellowship at the Liver Center at the University of California, San Francisco, CA, USA, and went on to earn a doctoral degree from Paris VII Diderot University for his work on the pathophysiology of viral and metabolic liver fibrosis.

Professor Ratziu’s main research interests are in the field of steatotic liver disease; the mechanisms, risk factors, and progression of liver fibrosis in viral and metabolic diseases; and the treatment of viral hepatitis and hepatocellular carcinoma. He coordinated or participated in several therapeutic trials in MASH. He was also involved in different European financed FP7, Horizon 2020 and Innovative Medicines Initiative 2 consortia. He is the founder and a member of the organizing committee of the NASH–TAG meetings. He is Editor-in-Chief of the Journal of Hepatology. He has published more than 450 articles (H-index of 111) in top-tier specialty journals and has been among the top 1% Highly cited researchers by Clarivate between 2022 and 2025.