A multisociety Delphi consensus statement on new fatty liver disease nomenclature
- PMID: 37364790
- DOI: 10.1016/j.jhep.2023.06.003
A multisociety Delphi consensus statement on new fatty liver disease nomenclature
Abstract
The principal limitations of the terms NAFLD and NASH are the reliance on exclusionary confounder terms and the use of potentially stigmatising language. This study set out to determine if content experts and patient advocates were in favour of a change in nomenclature and/or definition. A modified Delphi process was led by three large pan-national liver associations. The consensus was defined a priori as a supermajority (67%) vote. An independent committee of experts external to the nomenclature process made the final recommendation on the acronym and its diagnostic criteria. A total of 236 panellists from 56 countries participated in 4 online surveys and 2 hybrid meetings. Response rates across the 4 survey rounds were 87%, 83%, 83%, and 78%, respectively. Seventy-four percent of respondents felt that the current nomenclature was sufficiently flawed to consider a name change. The terms "nonalcoholic" and "fatty" were felt to be stigmatising by 61% and 66% of respondents, respectively. Steatotic liver disease was chosen as an overarching term to encompass the various aetiologies of steatosis. The term steatohepatitis was felt to be an important pathophysiological concept that should be retained. The name chosen to replace NAFLD was metabolic dysfunction-associated steatotic liver disease (MASLD). There was consensus to change the definition to include the presence of at least 1 of 5 cardiometabolic risk factors. Those with no metabolic parameters and no known cause were deemed to have cryptogenic steatotic liver disease. A new category, outside pure metabolic dysfunction-associated steatotic liver disease, termed metabolic and alcohol related/associated liver disease (MetALD), was selected to describe those with metabolic dysfunction-associated steatotic liver disease, who consume greater amounts of alcohol per week (140-350 g/wk and 210-420 g/wk for females and males, respectively). The new nomenclature and diagnostic criteria are widely supported and non-stigmatising, and can improve awareness and patient identification.
Keywords: ALD; Delphi; MASH; MASLD; Met-ALD; NAFLD; alcohol; metabolic; nomenclature; stigma.
Copyright © 2023 Mary E. Rinella, Jeffrey V. Lazarus, Vlad Ratziu, Sven M. Francque, Arun J. Sanyal, Fasiha Kanwal, Diana Romero, Manal F. Abdelmalek, Quentin M. Anstee, Juan Pablo Arab, Marco Arrese, Ramon Bataller, Ulrich Beuers, Jerome Boursier, Elisabetta Bugianesi, Christopher Byrne, Graciela E. Castro Narro, Abhijit Chowdhury, Helena Cortez-Pinto, Donna Cryer, Kenneth Cusi, Mohamed El-Kassas, Samuel Klein, Wayne Eskridge, Jiangao Fan, Samer Gawrieh, Cynthia D. Guy, Stephen A. Harrison, Seung Up Kim, Bart Koot, Marko Korenjak, Kris Kowdley, Florence Lacaille, Rohit Loomba, Robert Mitchell-Thain, Timothy R. Morgan, Elisabeth Powell, Michael Roden, Manuel Romero-Gómez, Marcelo Silva, Shivaram Prasad Singh, Silvia C. Sookoian, C. Wendy Spearman, Dina Tiniakos, Luca Valenti, Miriam B. Vos, Vincent Wai-Sun Wong, Stavra Xanthakos, Yusuf Yilmaz, Zobair Younossi, Ansley Hobbs, Marcela Villota-Rivas, Philip N. Newsome, NAFLD Nomenclature consensus group. Published by Elsevier B.V. All rights reserved.
Comment in
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A new era for steatotic liver disease: Evaluating the novel nomenclature in the UK Biobank.J Hepatol. 2024 Feb;80(2):e58-e60. doi: 10.1016/j.jhep.2023.07.007. Epub 2023 Jul 14. J Hepatol. 2024. PMID: 37453612 No abstract available.
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Are there all-cause mortality differences between metabolic dysfunction-associated steatotic liver disease subtypes?J Hepatol. 2024 Feb;80(2):e53-e54. doi: 10.1016/j.jhep.2023.07.012. Epub 2023 Jul 28. J Hepatol. 2024. PMID: 37516204 No abstract available.
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Can we use old NAFLD data under the new MASLD definition?J Hepatol. 2024 Feb;80(2):e54-e56. doi: 10.1016/j.jhep.2023.07.021. Epub 2023 Aug 2. J Hepatol. 2024. PMID: 37541393 No abstract available.
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Metabolic dysfunction-associated steatotic liver disease (MASLD) definition is better than MAFLD criteria for lean patients with NAFLD.J Hepatol. 2024 Feb;80(2):e61-e62. doi: 10.1016/j.jhep.2023.07.031. Epub 2023 Aug 7. J Hepatol. 2024. PMID: 37558135 No abstract available.
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Steatotic liver disease as a new nomenclature for NAFLD from the perspectives of the MENA region: One size fits all this time.J Hepatol. 2024 Feb;80(2):e66-e68. doi: 10.1016/j.jhep.2023.08.012. Epub 2023 Aug 22. J Hepatol. 2024. PMID: 37619930 No abstract available.
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Changing from NAFLD through MAFLD to MASLD: Similar prevalence and risk factors in a large Brazilian cohort.J Hepatol. 2024 Feb;80(2):e72-e74. doi: 10.1016/j.jhep.2023.08.025. Epub 2023 Sep 9. J Hepatol. 2024. PMID: 37678721 No abstract available.
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99% of patients with NAFLD meet MASLD criteria and natural history is therefore identical.J Hepatol. 2024 Feb;80(2):e76-e77. doi: 10.1016/j.jhep.2023.08.026. Epub 2023 Sep 9. J Hepatol. 2024. PMID: 37678723 No abstract available.
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Clinical and histological features under different nomenclatures of fatty liver disease: NAFLD, MAFLD, MASLD and MetALD.J Hepatol. 2024 Feb;80(2):e64-e66. doi: 10.1016/j.jhep.2023.08.021. Epub 2023 Sep 14. J Hepatol. 2024. PMID: 37714381 No abstract available.
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The new international nomenclature for steatotic liver disease: One step forward towards enhanced awareness for healthier life.Eur J Intern Med. 2023 Nov;117:1-2. doi: 10.1016/j.ejim.2023.09.006. Epub 2023 Sep 14. Eur J Intern Med. 2023. PMID: 37714774 No abstract available.
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Metabolic dysfunction-associated steatotic liver disease and all-cause/cause-specific mortality among adults in the United States.J Hepatol. 2024 Feb;80(2):e79-e81. doi: 10.1016/j.jhep.2023.09.014. Epub 2023 Sep 16. J Hepatol. 2024. PMID: 37717601 No abstract available.
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Metabolic dysfunction-associated steatotic liver disease: Where does non-alcoholic fatty liver disease in liver transplant recipients fit in this new definition?J Hepatol. 2024 Feb;80(2):e77-e79. doi: 10.1016/j.jhep.2023.09.009. Epub 2023 Sep 16. J Hepatol. 2024. PMID: 37717602 No abstract available.
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Changing from NAFLD to MASLD: The new definition can more accurately identify individuals at higher risk for diabetes.J Hepatol. 2024 Feb;80(2):e85-e87. doi: 10.1016/j.jhep.2023.09.035. Epub 2023 Oct 10. J Hepatol. 2024. PMID: 37827469 No abstract available.
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Transitioning from NAFLD to MAFLD and MASLD: Consistent prevalence and risk factors in a Chinese cohort.J Hepatol. 2024 Apr;80(4):e154-e155. doi: 10.1016/j.jhep.2023.09.033. Epub 2023 Oct 10. J Hepatol. 2024. PMID: 37827472 No abstract available.
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MASLD vs. NAFLD: A better definition for children with obesity at higher risk of kidney damage.J Hepatol. 2024 Feb;80(2):e87-e89. doi: 10.1016/j.jhep.2023.10.021. Epub 2023 Oct 27. J Hepatol. 2024. PMID: 37890724 No abstract available.
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MASLD screening and diagnostic algorithms are interchangeable with existing NAFLD literature.J Hepatol. 2024 Feb;80(2):e89-e91. doi: 10.1016/j.jhep.2023.10.032. Epub 2023 Nov 3. J Hepatol. 2024. PMID: 37925079 No abstract available.
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Suboptimal hydration status increases the risk of incident MASLD: A pediatric cohort study.J Hepatol. 2024 Apr;80(4):e145-e147. doi: 10.1016/j.jhep.2023.11.016. Epub 2023 Nov 28. J Hepatol. 2024. PMID: 38036006 No abstract available.
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Almost identical values of various non-invasive indexes for hepatic fibrosis and steatosis between NAFLD and MASLD in Asia.J Hepatol. 2024 Apr;80(4):e155-e157. doi: 10.1016/j.jhep.2023.12.030. Epub 2024 Jan 13. J Hepatol. 2024. PMID: 38224780 No abstract available.
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MASLD emerging from the fog of fatty liver.J Hepatol. 2024 Feb;80(2):178-180. doi: 10.1016/j.jhep.2023.10.011. Epub 2023 Nov 30. J Hepatol. 2024. PMID: 38278621 No abstract available.
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Changing from NAFLD to MASLD: The implications for health-related quality of life data.J Hepatol. 2024 Jun;80(6):e249-e251. doi: 10.1016/j.jhep.2024.02.010. Epub 2024 Feb 23. J Hepatol. 2024. PMID: 38403029 No abstract available.
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Rare monogenic causes of steatotic liver disease masquerading as MASLD.J Hepatol. 2024 Jun;80(6):e252-e253. doi: 10.1016/j.jhep.2024.02.025. Epub 2024 Mar 6. J Hepatol. 2024. PMID: 38458321 No abstract available.
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The MAFLD and MASLD conundrum: Is it reinvention of the wheel?J Hepatol. 2024 Jul;81(1):e22-e23. doi: 10.1016/j.jhep.2024.03.007. Epub 2024 Mar 13. J Hepatol. 2024. PMID: 38484916 No abstract available.
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