RT Journal Article T1 Disease burden and economic impact of diagnosed non-alcoholic steatohepatitis in five European countries in 2018: A cost-of-illness analysis. A1 Schattenberg, Jörn M A1 Lazarus, Jeffrey V A1 Newsome, Philip N A1 Serfaty, Lawrence A1 Aghemo, Alessio A1 Augustin, Salvador A1 Tsochatzis, Emmanuel A1 de Ledinghen, Victor A1 Bugianesi, Elisabetta A1 Romero-Gomez, Manuel A1 Bantel, Heike A1 Ryder, Stephen D A1 Boursier, Jerome A1 Leroy, Vincent A1 Crespo, Javier A1 Castera, Laurent A1 Floros, Lefteris A1 Atella, Vincenzo A1 Mestre-Ferrandiz, Jorge A1 Elliott, Rachel A1 Kautz, Achim A1 Morgan, Alice A1 Hartmanis, Sally A1 Vasudevan, Sharad A1 Pezzullo, Lynne A1 Trylesinski, Aldo A1 Cure, Sandrine A1 Higgins, Victoria A1 Ratziu, Vlad K1 burden of disease K1 cost-of-illness analysis K1 economic impact K1 healthcare resource utilisation K1 non-alcoholic steatohepatitis (NASH) AB Non-alcoholic steatohepatitis (NASH) is a chronic disease that can progress to end-stage liver disease (ESLD). A large proportion of early-stage NASH patients remain undiagnosed compared to those with advanced fibrosis, who are more likely to receive disease management interventions. This study estimated the disease burden and economic impact of diagnosed NASH in the adult population of France, Germany, Italy, Spain and the United Kingdom in 2018. The socioeconomic burden of diagnosed NASH was estimated using cost-of-illness methodology applying a prevalence approach to estimate the number of adults with NASH and the attributable economic and wellbeing costs. Given undiagnosed patients do not incur costs in the study, the probability of diagnosis is central to cost estimation. The analysis was based on a literature review, databases and consultation with clinical experts, economists and patient groups. The proportion of adult NASH patients with a diagnosis ranged from 11.9% to 12.7% across countries, which increased to 38.8%-39.1% for advanced fibrosis (F3-F4 compensated cirrhosis). Total economic costs were €8548-19 546M. Of these, health system costs were €619-1292M. Total wellbeing costs were €41 536-90 379M. The majority of the undiagnosed population (87.3%-88.2% of total prevalence) was found to have early-stage NASH, which, left untreated, may progress to more resource consuming ESLD over time. This study found that the majority of economic and wellbeing costs of NASH are experienced in late disease stages. Earlier diagnosis and care of NASH patients could reduce future healthcare costs. YR 2021 FD 2021-03-18 LK http://hdl.handle.net/10668/17185 UL http://hdl.handle.net/10668/17185 LA en DS RISalud RD Apr 4, 2025