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Sookoian S, Rotman Y, Valenti L. Genetics of Metabolic Dysfunction-associated Steatotic Liver Disease: The State of Art Update. Clin Gastroenterol Hepatol 2024:S1542-3565(24)00690-6. [PMID: 39094912 DOI: 10.1016/j.cgh.2024.05.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2024] [Revised: 04/18/2024] [Accepted: 05/28/2024] [Indexed: 08/04/2024]
Abstract
Recent advances in the genetics of metabolic dysfunction-associated steatotic liver disease (MASLD) are gradually revealing the mechanisms underlying the heterogeneity of the disease and have shown promising results in patient stratification. Genetic characterization of the disease has been rapidly developed using genome-wide association studies, exome-wide association studies, phenome-wide association studies, and whole exome sequencing. These advances have been powered by the increase in computational power, the development of new analytical algorithms, including some based on artificial intelligence, and the recruitment of large and well-phenotyped cohorts. This review presents an update on genetic studies that emphasize new biological insights from next-generation sequencing approaches. Additionally, we discuss innovative methods for discovering new genetic loci for MASLD, including rare variants. To comprehensively manage MASLD, it is important to stratify risks. Therefore, we present an update on phenome-wide association study associations, including extreme phenotypes. Additionally, we discuss whether polygenic risk scores and targeted sequencing are ready for clinical use. With particular focus on precision medicine, we introduce concepts such as the interplay between genetics and the environment in modulating genetic risk with lifestyle or standard therapies. A special chapter is dedicated to gene-based therapeutics. The limitations of approved pharmacological approaches are discussed, and the potential of gene-related mechanisms in therapeutic development is reviewed, including the decision to perform genetic testing in patients with MASLD.
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Affiliation(s)
- Silvia Sookoian
- Clinical and Molecular Hepatology, Translational Health Research Center (CENITRES), Maimónides University, Buenos Aires, Argentina; Faculty of Health Science, Maimónides University, Buenos Aires, Argentina; Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Buenos Aires, Argentina.
| | - Yaron Rotman
- Liver & Energy Metabolism Section, Liver Diseases Branch, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, Maryland
| | - Luca Valenti
- Precision Medicine - Department of Transfusion Medicine, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy; Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
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Stine JG, Medic N, Pettersson B, Venerus M, Blau JE. The health care experience of adults with metabolic dysfunction-associated steatohepatitis and influence of PNPLA3: A qualitative study. Hepatol Commun 2024; 8:e0451. [PMID: 38780312 PMCID: PMC11124700 DOI: 10.1097/hc9.0000000000000451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 03/06/2024] [Indexed: 05/25/2024] Open
Abstract
BACKGROUND Metabolic dysfunction-associated steatohepatitis (MASH) is a progressive form of metabolic dysfunction-associated steatotic liver disease, for which there is limited information about patient experience, including the patient journey. METHODS In this study, we conducted interviews with patients with MASH to qualitatively evaluate the patient journey and help elucidate the experiences of this patient population. We also investigated if the patatin-like phospholipase domain-containing protein 3 (PNPLA3) I148M variant (non-Hispanic) or being of Hispanic ethnicity may influence patient experiences because these 2 subgroups develop advanced liver disease more frequently than other patient groups. RESULTS One-to-one interviews were conducted with 28 adults (with PNPLA3 I148M genetic variant, n = 10; Hispanic, n = 8) living in the United States who had been diagnosed with MASH with liver fibrosis. Patients were asked open-ended questions about their experiences before, at, and after their diagnosis. The data collected found that patients experienced a long process of misdiagnoses before their diagnosis of MASH, a lack of clear information provided by clinicians, and limited accessibility to support groups. Hispanic patients reported "impact on family/friends" (75%) and "fear of disease progression" (75%) more frequently than the other patient cohorts interviewed. This is the first report of "fear of progression" in patients with MASH. No patients who were White and had the PNPLA3 I148M variant reported nausea/vomiting, in contrast to other patient cohorts. CONCLUSIONS This qualitative study identified key aspects of the patient journey that are important for clinical providers and medical teams to recognize. We also propose a new algorithm that could be developed to help screen relatives of patients who are found to carry the PNPLA3 I148M variant.
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Affiliation(s)
- Jonathan G. Stine
- Department of Medicine, Division of Gastroenterology and Hepatology, The Pennsylvania State University Health Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
- Fatty Liver Program, Pennsylvania State Health Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
- Liver Center, The Pennsylvania State University Health Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
- Department of Public Health Sciences, The Pennsylvania State University College of Medicine, Hershey, Pennsylvania, USA
- Cancer Institute, The Pennsylvania State University-Milton S. Hershey Medical Center, Hershey, Pennsylvania, USA
| | - Nenad Medic
- Patient Centered Science, Cardiovascular, Renal and Metabolism (CVRM), BioPharmaceuticals Medical, AstraZeneca, Cambridge, UK
| | - Billie Pettersson
- Patient Centered Science, Cardiovascular, Renal and Metabolism (CVRM), BioPharmaceuticals Medical, AstraZeneca, Gothenburg, Sweden
| | | | - Jenny E. Blau
- Research and Early Development, Cardiovascular, Renal and Metabolism (CVRM), BioPharmaceuticals R&D, AstraZeneca, Gaithersburg, Maryland, USA
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Tulone A, Pennisi G, Ciccioli C, Infantino G, La Mantia C, Cannella R, Mercurio F, Petta S. Are we ready for genetic testing in metabolic dysfunction-associated steatotic liver disease? United European Gastroenterol J 2024; 12:638-648. [PMID: 38659291 PMCID: PMC11176907 DOI: 10.1002/ueg2.12556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 01/18/2024] [Indexed: 04/26/2024] Open
Abstract
Metabolic dysfunction-associated steatotic liver disease (MASLD), with its steadily increasing prevalence, represents now a major problem in public health. A proper referral could benefit from tools allowing more precise risk stratification. To this end, in recent decades, several genetic variants that may help predict and refine the risk of development and progression of MASLD have been investigated. In this review, we aim to discuss the role genetics in MASLD plays in everyday clinical practice. We performed a comprehensive literature search of PubMed for relevant publications. Available evidence highlights the emergence of genetic-based noninvasive algorithms for diagnosing fatty liver, metabolic dysfunction-associated steatohepatitis, fibrosis progression and occurrence of liver-related outcomes including hepatocellular carcinoma. Nevertheless, their accuracy is not optimal and application in everyday clinical practice remains challenging. Furthermore, susceptible genetic markers have recently become subjects of great scientific interest as therapeutic targets in precision medicine. In conclusion, decisional algorithms based on genetic testing in MASLD to facilitate the clinician decisions on management and treatment are under growing investigation and could benefit from artificial intelligence methodology.
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Affiliation(s)
- Adele Tulone
- Sezione di GastroenterologiaPROMISEUniversity of PalermoPalermoItaly
| | - Grazia Pennisi
- Sezione di GastroenterologiaPROMISEUniversity of PalermoPalermoItaly
| | - Carlo Ciccioli
- Sezione di GastroenterologiaPROMISEUniversity of PalermoPalermoItaly
| | | | - Claudia La Mantia
- Sezione di GastroenterologiaPROMISEUniversity of PalermoPalermoItaly
| | - Roberto Cannella
- Dipartimento di Biomedicina, Neuroscienze e Diagnostica Avanzata (BIND)University of PalermoPalermoItaly
| | | | - Salvatore Petta
- Sezione di GastroenterologiaPROMISEUniversity of PalermoPalermoItaly
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Park H, Yoon EL, Chung GE, Choe EK, Bae JH, Choi SH, Kim M, Hwang W, Kim HL, Yang SY, Jun DW. Genetic and Metabolic Characteristics of Lean Nonalcoholic Fatty Liver Disease in a Korean Health Examinee Cohort. Gut Liver 2024; 18:316-327. [PMID: 37560798 PMCID: PMC10938142 DOI: 10.5009/gnl230044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 04/05/2023] [Accepted: 04/10/2023] [Indexed: 08/11/2023] Open
Abstract
Background/Aims The pathophysiology of lean nonalcoholic fatty liver disease (NAFLD) is unclear but has been shown to be associated with more diverse pathogenic mechanisms than that of obese NAFLD. We investigated the characteristics of genetic or metabolic lean NAFLD in a health checkup cohort. Methods This retrospective cross-sectional study analyzed single nucleotide polymorphism data for 6,939 health examinees. Lean individuals were categorized according to a body mass index cutoff of 23 kg/m2. Single nucleotide polymorphisms were analyzed using genotyping arrays. Results The prevalence of lean NAFLD was 21.6% among all participants with NAFLD, and the proportion of lean NAFLD was 18.5% among lean participants. The prevalence of metabolic syndrome and diabetes among lean patients with NAFLD was 12.4% and 10.4%, respectively. Lean NAFLD appeared to be metabolic-associated in approximately 20.1% of patients. The homozygous minor allele (GG) of PNPLA3 (rs738409) and heterozygous minor alleles (CT, TT) of TM6SF2 (rs58542926) were associated with lean NAFLD. However, the prevalence of fatty liver was not associated with the genetic variants MBOAT7 (rs641738), HSD17B13 (rs72613567), MARC1 (rs2642438), or AGXT2 (rs2291702) in lean individuals. Lean NAFLD appeared to be associated with PNPLA3 or TM6SF2 genetic variation in approximately 32.1% of cases. Multivariate risk factor analysis showed that metabolic risk factors, genetic risk variants, and waist circumference were independent risk factors for lean NAFLD. Conclusions In a considerable number of patients, lean NAFLD did not appear to be associated with known genetic or metabolic risk factors. Further studies are required to investigate additional risk factors and gain a more comprehensive understanding of lean NAFLD.
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Affiliation(s)
- Huiyul Park
- Department of Family Medicine, Myoungji Hospital, Hanyang University College of Medicine, Goyang, Korea
| | - Eileen L. Yoon
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
| | - Goh Eun Chung
- Departments of Internal Medicine, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
| | - Eun Kyung Choe
- Departments of Surgery, Healthcare Research Institute, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
| | - Jung Ho Bae
- Departments of Internal Medicine, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
| | - Seung Ho Choi
- Departments of Internal Medicine, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
| | - Mimi Kim
- Department of Radiology, Hanyang University College of Medicine, Seoul, Korea
| | - Woochang Hwang
- Hanyang Institute of Bioscience and Biotechnology, Department of Pre-Medicine, College of Medicine, Hanyang University, Seoul, Korea
| | - Hye-Lin Kim
- College of Pharmacy, Sahmyook University, Seoul, Korea
| | - Sun Young Yang
- Departments of Internal Medicine, Seoul National University Hospital Healthcare System Gangnam Center, Seoul, Korea
| | - Dae Won Jun
- Department of Internal Medicine, Hanyang University College of Medicine, Seoul, Korea
- Hanyang Institute of Bioscience and Biotechnology, Department of Pre-Medicine, College of Medicine, Hanyang University, Seoul, Korea
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5
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Danpanichkul P, Kongarin S, Permpatdechakul S, Polpichai N, Duangsonk K, Manosroi W, Chaiyakunapruk N, Mousa OY, Kim D, Chen VL, Wijarnpreecha K. The Surreptitious Burden of Nonalcoholic Fatty Liver Disease in the Elderly in the Asia-Pacific Region: An Insight from the Global Burden of Disease Study 2019. J Clin Med 2023; 12:6456. [PMID: 37892594 PMCID: PMC10607093 DOI: 10.3390/jcm12206456] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 09/28/2023] [Accepted: 10/08/2023] [Indexed: 10/29/2023] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD) represents a significant health threat worldwide. The aging population and a rise in metabolic syndrome in Asia might influence the epidemiology of NAFLD among the elderly. However, there is a lack of understanding of the burden and recommendations for NAFLD in this group. Our study sought to investigate the trends in the NAFLD burden among the elderly in the Asia-Pacific region. We employed data from the Global Burden of Disease 2019 study for an in-depth analysis of the prevalence and disability-adjusted life years (DALYs) along with age-standardized rate (ASR) associated with NAFLD in elderly populations (age 65-89 years) across the Asia-Pacific region, including the Southeast Asia (SEA) and Western Pacific (WP) regions, from 2010 to 2019. This study also examined the trends and disparities in NAFLD burden across different nations and sexes. In 2019, there were over 120 million cases of NAFLD in the elderly in the Asia-Pacific region. The ASR of prevalence was higher in SEA compared to WP (36,995.37 vs. 32,821.78 per 100,000). ASR of prevalence increased with annual percentage change (APC) +0.95% in the WP while it increased by +0.87% in SEA. During the study period, the ASR of DALYs decreased in SEA (APC -0.41%) but remained stable in the WP region. The burden of NAFLD in the elderly population in Asia-Pacific has increased, underscoring the timely intervention to tackle this high and rising burden.
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Affiliation(s)
- Pojsakorn Danpanichkul
- Immunology Unit, Department of Microbiology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Siwanart Kongarin
- Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | | | - Natchaya Polpichai
- Department of Internal Medicine, Weiss Memorial Hospital, Chicago, IL 60640, USA;
| | - Kwanjit Duangsonk
- Department of Microbiology, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Worapaka Manosroi
- Division of Endocrinology, Department of Internal Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
- Clinical Epidemiology and Clinical Statistics Center, Faculty of Medicine, Chiang Mai University, Chiang Mai 50200, Thailand
| | - Nathorn Chaiyakunapruk
- Department of Pharmacotherapy, College of Pharmacy, University of Utah, Salt Lake City, UT 84112, USA;
- IDEAS Center, Veterans Affairs Salt Lake City Healthcare System, Salt Lake City, UT 84108, USA
| | - Omar Y. Mousa
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Mayo Clinic, Rochester, Mayo Clinic Health System, Rochester, MN 55902, USA
| | - Donghee Kim
- Division of Gastroenterology and Hepatology, Stanford University School of Medicine, Stanford, CA 94305, USA;
| | - Vincent L. Chen
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of Michigan, Ann Arbor, MI 41809, USA
| | - Karn Wijarnpreecha
- Division of Gastroenterology and Hepatology, Department of Medicine, University of Arizona College of Medicine, Phoenix, AZ 85004, USA
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, Banner University Medical Center, Phoenix, AZ 85006, USA
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Xu Q, Feng M, Ren Y, Liu X, Gao H, Li Z, Su X, Wang Q, Wang Y. From NAFLD to HCC: Advances in noninvasive diagnosis. Biomed Pharmacother 2023; 165:115028. [PMID: 37331252 DOI: 10.1016/j.biopha.2023.115028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Revised: 06/10/2023] [Accepted: 06/14/2023] [Indexed: 06/20/2023] Open
Abstract
Non-alcoholic fatty liver disease (NAFLD) has gradually become one of the major liver health problems in the world. The dynamic course of the disease goes through steatosis, inflammation, fibrosis, and carcinoma. Before progressing to carcinoma, timely and effective intervention will make the condition better, which highlights the importance of early diagnosis. With the further study of the biological mechanism in the pathogenesis and progression of NAFLD, some potential biomarkers have been discovered, and the possibility of their clinical application is gradually being discussed. At the same time, the progress of imaging technology and the emergence of new materials and methods also provide more possibilities for the diagnosis of NAFLD. This article reviews the diagnostic markers and advanced diagnostic methods of NAFLD in recent years.
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Affiliation(s)
- Qinchen Xu
- Department of Clinical Laboratory, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250033, China
| | - Maoxiao Feng
- Department of Clinical Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250021, Jinan, Shandong Province, China
| | - Yidan Ren
- Department of Clinical Laboratory, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250033, China
| | - Xiaoyan Liu
- Department of Clinical Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250021, Jinan, Shandong Province, China
| | - Huiru Gao
- Department of Clinical Laboratory, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250033, China
| | - Zigan Li
- Department of Clinical Laboratory, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250033, China
| | - Xin Su
- Department of Clinical Laboratory, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250033, China
| | - Qin Wang
- Department of Anesthesiology, Qilu Hospital, Shandong University, 107 Wenhua Xi Road, Jinan 250012, China.
| | - Yunshan Wang
- Department of Clinical Laboratory, Shandong Provincial Hospital Affiliated to Shandong First Medical University, 250021, Jinan, Shandong Province, China.
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Harrison SA, Allen AM, Dubourg J, Noureddin M, Alkhouri N. Challenges and opportunities in NASH drug development. Nat Med 2023; 29:562-573. [PMID: 36894650 DOI: 10.1038/s41591-023-02242-6] [Citation(s) in RCA: 122] [Impact Index Per Article: 122.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 12/20/2022] [Indexed: 03/11/2023]
Abstract
Nonalcoholic fatty liver disease (NAFLD) and its more severe form, nonalcoholic steatohepatitis (NASH), represent a growing worldwide epidemic and a high unmet medical need, as no licensed drugs have been approved thus far. Currently, histopathological assessment of liver biopsies is mandatory as a primary endpoint for conditional drug approval. This requirement represents one of the main challenges in the field, as there is substantial variability in this invasive histopathological assessment, which leads to dramatically high screen-failure rates in clinical trials. Over the past decades, several non-invasive tests have been developed to correlate with liver histology and, eventually, outcomes to assess disease severity and longitudinal changes non-invasively. However, further data are needed to ensure their endorsement by regulatory authorities as alternatives to histological endpoints in phase 3 trials. This Review describes the challenges of drug development in NAFLD-NASH trials and potential mitigating strategies to move the field forward.
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Affiliation(s)
| | - Alina M Allen
- Division of Gastroenterology and Hepatology, Mayo Clinic Rochester, Rochester, MN, USA
| | | | | | - Naim Alkhouri
- Department of Hepatology, Arizona Liver Health, Chandler, AZ, USA
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Pipitone RM, Ciccioli C, Infantino G, La Mantia C, Parisi S, Tulone A, Pennisi G, Grimaudo S, Petta S. MAFLD: a multisystem disease. Ther Adv Endocrinol Metab 2023; 14:20420188221145549. [PMID: 36726391 PMCID: PMC9885036 DOI: 10.1177/20420188221145549] [Citation(s) in RCA: 48] [Impact Index Per Article: 48.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Accepted: 11/26/2022] [Indexed: 01/29/2023] Open
Abstract
Nonalcoholic fatty liver disease (NAFLD), affecting about 25% of general population and more than 50% of dysmetabolic patients, is an emerging cause of chronic liver disease and its complications. Recently, an international consensus of experts proposed to rename this disease as 'Metabolic dysfunction-Associated Fatty Liver Disease' (MAFLD) to focus on the bidirectional interplay between fatty liver and metabolic alterations and to stress the need of assessing fatty liver independently from alcohol consumption and other coexisting causes of liver disease. The peculiarity of NAFLD/MAFLD lies in the presence of a higher risk of not only - as expected - liver-related events but also of extrahepatic events, mostly cardiovascular and cancers. Available evidence suggests that these associations are not only the expression of sharing the same risk factors but shed light about the ability of NAFLD/MAFLD and particularly of its progressive form - nonalcoholic/metabolic dysfunction-associated steatohepatitis - to act as an independent risk factor via promotion of atherogenic dyslipidemia and a proinflammatory, profibrogenic, and procoagulant systemic environment. The present review summarizes available epidemiological and clinical evidence supporting the concept of NAFLD/MAFLD as a multisystemic disease, and highlights potential explanatory mechanisms underlying the association between NAFLD/MAFLD and extrahepatic disorders.
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Affiliation(s)
- Rosaria Maria Pipitone
- Section of Gastroenterology and Hepatology,
PROMISE, University of Palermo, Palermo, Italy
| | - Carlo Ciccioli
- Section of Gastroenterology and Hepatology,
PROMISE, University of Palermo, Palermo, Italy
| | - Giuseppe Infantino
- Section of Gastroenterology and Hepatology,
PROMISE, University of Palermo, Palermo, Italy
| | - Claudia La Mantia
- Section of Gastroenterology and Hepatology,
PROMISE, University of Palermo, Palermo, Italy
| | - Stefanie Parisi
- Section of Gastroenterology and Hepatology,
PROMISE, University of Palermo, Palermo, Italy
| | - Adele Tulone
- Section of Gastroenterology and Hepatology,
PROMISE, University of Palermo, Palermo, Italy
| | - Grazia Pennisi
- Section of Gastroenterology and Hepatology,
PROMISE, University of Palermo, Palermo, Italy
| | - Stefania Grimaudo
- Section of Gastroenterology and Hepatology,
PROMISE, University of Palermo, Palermo, Italy
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Holmer M, Ekstedt M, Nasr P, Zenlander R, Wester A, Tavaglione F, Romeo S, Kechagias S, Stål P, Hagström H. Effect of common genetic variants on the risk of cirrhosis in non-alcoholic fatty liver disease during 20 years of follow-up. Liver Int 2022; 42:2769-2780. [PMID: 36166317 PMCID: PMC9828463 DOI: 10.1111/liv.15438] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 09/11/2022] [Accepted: 09/25/2022] [Indexed: 01/20/2023]
Abstract
BACKGROUND AND AIMS Several genotypes associate with a worse histopathological profile in patients with non-alcoholic fatty liver disease (NAFLD). Whether genotypes impact long-term outcomes is unclear. We investigated the importance of PNPLA3, TM6SF2, MBOAT7 and GCKR genotype for the development of severe outcomes in NAFLD. METHOD DNA samples were collected from 546 patients with NAFLD. Advanced fibrosis was diagnosed by liver biopsy or elastography. Non-alcoholic steatohepatitis (NASH) was histologically defined. Additionally, 5396 controls matched for age, sex and municipality were identified from population-based registers. Events of severe liver disease and all-cause mortality were collected from national registries. Hazard ratios (HRs) adjusted for age, sex, body mass index and type 2 diabetes were estimated with Cox regression. RESULTS In NAFLD, the G/G genotype of PNPLA3 was associated with a higher prevalence of NASH at baseline (odds ratio [OR] 3.67, 95% CI = 1.66-8.08), but not with advanced fibrosis (OR 1.81, 95% CI = 0.79-4.14). After up to 40 years of follow-up, the PNPLA3 G/G genotype was associated with a higher rate of severe liver disease (adjusted hazard ratio [aHR] 2.27, 95% CI = 1.15-4.47) compared with the C/C variant. NAFLD patients developed cirrhosis at a higher rate than controls (aHR 9.00, 95% CI = 6.85-11.83). The PNPLA3 G/G genotype accentuated this rate (aHR 23.32, 95% = CI 9.14-59.47). Overall mortality was not affected by any genetic variant. CONCLUSION The PNPLA3 G/G genotype is associated with an increased rate of cirrhosis in NAFLD. Our results suggest that assessment of the PNPLA3 genotype is of clinical relevance in patients with NAFLD to individualize monitoring and therapeutic strategies.
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Affiliation(s)
- Magnus Holmer
- Division of Liver and Pancreatic disease, Department of Upper GIKarolinska University HospitalStockholmSweden,Department of Medicine, HuddingeKarolinska InstitutetStockholmSweden
| | - Mattias Ekstedt
- Department of Gastroenterology and Hepatology, Department of Health, Medicine, and Caring SciencesLinköping UniversityLinköpingSweden
| | - Patrik Nasr
- Department of Medicine, HuddingeKarolinska InstitutetStockholmSweden,Department of Gastroenterology and Hepatology, Department of Health, Medicine, and Caring SciencesLinköping UniversityLinköpingSweden
| | - Robin Zenlander
- Department of Medicine, HuddingeKarolinska InstitutetStockholmSweden
| | - Axel Wester
- Department of Medicine, HuddingeKarolinska InstitutetStockholmSweden
| | - Federica Tavaglione
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, Wallenberg LaboratoryUniversity of GothenburgGothenburgSweden
| | - Stefano Romeo
- Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, Wallenberg LaboratoryUniversity of GothenburgGothenburgSweden,Department of CardiologySahlgrenska University HospitalGothenburgSweden
| | - Stergios Kechagias
- Department of Gastroenterology and Hepatology, Department of Health, Medicine, and Caring SciencesLinköping UniversityLinköpingSweden
| | - Per Stål
- Division of Liver and Pancreatic disease, Department of Upper GIKarolinska University HospitalStockholmSweden,Department of Medicine, HuddingeKarolinska InstitutetStockholmSweden
| | - Hannes Hagström
- Division of Liver and Pancreatic disease, Department of Upper GIKarolinska University HospitalStockholmSweden,Department of Medicine, HuddingeKarolinska InstitutetStockholmSweden,Clinical Epidemiology Unit, Department of Medicine, SolnaKarolinska InstitutetStockholmSweden
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10
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Vilar-Gomez E, Pirola CJ, Sookoian S, Wilson LA, Liang T, Chalasani N. PNPLA3 rs738409 and risk of fibrosis in NAFLD: Exploring mediation pathways through intermediate histological features. Hepatology 2022; 76:1482-1494. [PMID: 35349726 PMCID: PMC9519813 DOI: 10.1002/hep.32491] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Revised: 02/24/2022] [Accepted: 03/27/2022] [Indexed: 12/22/2022]
Abstract
BACKGROUND AND AIMS It is unclear whether rs738409 (p.I148M) missense variant in patatin-like phospholipase domain-containing 3 rs738409 promotes fibrosis development by triggering specific fibrogenic pathways or by creating an unfavorable microenvironment by promoting steatosis, inflammation, and ultimately fibrosis. We tested the hypothesis that intermediate histologic traits, including steatosis, lobular and portal inflammation, and ballooning may determine the effect of rs738409 on liver fibrosis among individuals with biopsy-proven NAFLD. APPROACH AND RESULTS Causal mediation models including multiple mediators in parallel or sequentially were performed to examine the effect of rs738409, by decomposing its total effect on fibrosis severity into direct and indirect effects, mediated by histology traits in 1153 non-Hispanic White patients. Total effect of rs738409 on fibrosis was β = 0.19 (95% CI: 0.09-0.29). The direct effect of rs738409 on fibrosis after removing mediators' effects was β = 0.09 (95% CI: 0.01-0.17) and the indirect effect of rs738409 on fibrosis through all mediators' effects were β = 0.010 (95% CI: 0.04-0.15). Among all mediators, the greatest estimated effect size was displayed by portal inflammation (β = 0.09, 95% CI: 0.05-0.12). Among different sequential combinations of histology traits, the path including lobular inflammation followed by ballooning degeneration displayed the most significant indirect effect (β = 0.023, 95% CI: 0.011-0.037). Mediation analysis in a separate group of 404 individuals with biopsy-proven NAFLD from other races and ethnicity showed similar results. CONCLUSIONS In NAFLD, nearly half of the total effect of the rs738409 G allele on fibrosis severity could be explained by a direct pathway, suggesting that rs738409 may promote fibrosis development by activating specific fibrogenic pathways. A large proportion of the indirect effect of rs738409 on fibrosis severity is mediated through portal inflammation.
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Affiliation(s)
- Eduardo Vilar-Gomez
- Department of Medicine, Division of Gastroenterology and Hepatology, Indiana University School of Medicine, Indianapolis, IN, US
| | - Carlos J. Pirola
- Molecular Genetics and Biology of Complex Diseases and Department of Clinical and Molecular Hepatology, Institute of Medical Research (IDIM), University of Buenos Aires-National Scientific and Technical Research Council (CONICET), Ciudad Autonoma de Buenos Aires, Argentina
| | - Silvia Sookoian
- Molecular Genetics and Biology of Complex Diseases and Department of Clinical and Molecular Hepatology, Institute of Medical Research (IDIM), University of Buenos Aires-National Scientific and Technical Research Council (CONICET), Ciudad Autonoma de Buenos Aires, Argentina
| | - Laura A. Wilson
- Johns Hopkins Bloomberg School of Public Health, Baltimore, MD
| | - Tiebing Liang
- Department of Medicine, Division of Gastroenterology and Hepatology, Indiana University School of Medicine, Indianapolis, IN, US
| | - Naga Chalasani
- Department of Medicine, Division of Gastroenterology and Hepatology, Indiana University School of Medicine, Indianapolis, IN, US
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11
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Lonardo A, Mantovani A, Petta S, Carraro A, Byrne CD, Targher G. Metabolic mechanisms for and treatment of NAFLD or NASH occurring after liver transplantation. Nat Rev Endocrinol 2022; 18:638-650. [PMID: 35840803 DOI: 10.1038/s41574-022-00711-5] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/07/2022] [Indexed: 11/08/2022]
Abstract
The rising tide of non-alcoholic fatty liver disease (NAFLD) associated with the obesity epidemic is a major health concern worldwide. NAFLD - specifically its more advanced form, non-alcoholic steatohepatitis (NASH)-related cirrhosis - is now the fastest growing indication for liver transplantation in the USA and Europe. Although the short-term and mid-term overall survival rates of patients who receive a liver transplant for NASH-related cirrhosis are essentially similar to those of patients who receive a transplant for other liver indications, recipients with NASH-related cirrhosis have an increased risk of waiting-list mortality and of developing recurrent liver disease and cardiometabolic complications in the longer term after liver transplantation. This Review provides a brief overview of the epidemiology of NAFLD and NASH and the occurrence of NAFLD or NASH in patients after liver transplantation for NASH and other liver indications. It also discusses the putative metabolic mechanisms underlying the emergence of NAFLD or NASH after liver transplantation as well as optimal therapeutic approaches for recipients of liver transplants, including the management of cardiometabolic comorbidities, tailored immunosuppression, lifestyle changes and pharmacotherapy for NAFLD.
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Affiliation(s)
- Amedeo Lonardo
- Metabolic Syndrome Unit, University of Modena, Modena, Italy
| | - Alessandro Mantovani
- Section of Endocrinology, Diabetes and Metabolism, Department of Medicine, University of Verona, Verona, Italy
| | - Salvatore Petta
- Section of Gastroenterology and Hepatology, PROMISE, University of Palermo, Palermo, Italy
| | - Amedeo Carraro
- Liver Transplant Unit, University of Verona, Verona, Italy
| | - Christopher D Byrne
- Nutrition and Metabolism, Faculty of Medicine, University of Southampton, Southampton, UK
- Southampton National Institute for Health Research Biomedical Research Centre, University Hospital Southampton, Southampton General Hospital, Southampton, UK
| | - Giovanni Targher
- Section of Endocrinology, Diabetes and Metabolism, Department of Medicine, University of Verona, Verona, Italy.
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12
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Bernstein D, Kovalic AJ. Noninvasive assessment of fibrosis among patients with nonalcoholic fatty liver disease [NAFLD]. Metabol Open 2022; 13:100158. [PMID: 35036892 PMCID: PMC8749444 DOI: 10.1016/j.metop.2021.100158] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Revised: 12/02/2021] [Accepted: 12/12/2021] [Indexed: 02/07/2023] Open
Abstract
Nonalcoholic fatty liver disease [NAFLD] is a condition affecting a vast portion of the worldwide population. The presence of underlying fibrosis is the strongest predictor of long-term outcomes and mortality, with a graduated increase in liver-related morbidity and mortality with progression from moderate fibrosis tobiomarkers targeting collagen turnover and extracellular matrix remodeling FibroTest FAST™, Velacur™, MRE]. While many of these provide a robust, stand alone value, the accuracy of these noninvasive tests markedly increase when used in combination or in sequential order with one another. There is not a uniform consensus demonstrating superiority of any specific test. Given the growing role and accuracy of these tests, they should have an expanding role in the assessment of fibrosis across this patient population and obviate the need for liver biopsy in a large portion of patients. Future clinical studies should focus on validating these novel biomarkers, as well as optimizing the sequential or algorithmic testing when combining these noninvasive tests.
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Affiliation(s)
- David Bernstein
- Department of Internal Medicine, Division of Hepatology, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell Health, North Shore University Hospital, Hempstead, NY, USA
| | - Alexander J Kovalic
- Department of Internal Medicine, Division of Hepatology, Donald and Barbara Zucker School of Medicine at Hofstra/Northwell Health, North Shore University Hospital, Hempstead, NY, USA
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13
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Grimaudo S, Dongiovanni P, Pihlajamäki J, Eslam M, Yki-Järvinen H, Pipitone RM, Baselli G, Cammà C, Di Marco V, Enea M, Longo M, Pennisi G, Prati D, Zito R, Fracanzani AL, Craxì A, George J, Romeo S, Valenti L, Petta S. NR1H4 rs35724 G>C variant modulates liver damage in nonalcoholic fatty liver disease. Liver Int 2021; 41:2712-2719. [PMID: 34268860 DOI: 10.1111/liv.15016] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Revised: 06/22/2021] [Accepted: 07/05/2021] [Indexed: 02/13/2023]
Abstract
BACKGROUND AND AIMS Farnesoid X receptor (FXR) plays a key role in bile acid and lipid homeostasis. Experimental evidence suggests that it can modulate liver damage related to nonalcoholic fatty liver disease (NAFLD). We examined the impact of the NR1H4 rs35724 G>C, encoding for FXR, on liver damage in a large cohort of patients at risk of steatohepatitis. METHODS We considered 2,660 consecutive individuals at risk of steatohepatitis with liver histology. The rs35724 G>C polymorphisms were genotyped by TaqMan assays. Gene expression was evaluated by RNASeq in a subset of patients (n = 124). RESULTS The NR1H4 rs35724 CC genotype, after adjusting for clinic-metabolic and genetic confounders and for enrolling centre, was protective against severity of steatosis (GG vs CC OR 0.77, 95% CI 0.62-0.95; P = .01), steatohepatitis (GG vs CC OR 0.62, 95% CI 0.47-0.83; P = .001) and severity of fibrosis (GG vs CC OR 0.83, 95% CI 0.67-0.98; P = .04). The C allele was associated with higher total circulating cholesterol (P = .01). Patients carrying the NR1H4 rs35724 C allele had significantly higher hepatic mRNA levels of FXR and were associated with higher hepatic FGFR4 and Cyp39A1 that are in turn involved in bile acid synthesis. CONCLUSIONS Increased hepatic FXR expression due to the NR1H4 rs35724 C allele is linked to higher serum cholesterol but protects against steatosis, steatohepatitis and liver fibrosis. The translational relevance of these results for patient risk stratification and FXR-targeted therapy warrants further investigation.
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Affiliation(s)
- Stefania Grimaudo
- Sezione di Gastroenterologia e Epatologia, Dipartimento di Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro", University of Palermo, Palermo, Italy
| | - Paola Dongiovanni
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Jussi Pihlajamäki
- Department of Clinical Nutrition, Institute of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland
| | - Mohammed Eslam
- Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital and University of Sydney, Westmead, NSW, Australia
| | - Hannele Yki-Järvinen
- Department of Medicine, University of Helsinki and Helsinki University Central Hospital, Helsinki, Finland
| | - Rosaria Maria Pipitone
- Sezione di Gastroenterologia e Epatologia, Dipartimento di Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro", University of Palermo, Palermo, Italy
| | - Guido Baselli
- Department of Pathophysiology and Transplantation, Section Internal Medicine, Fondazione Ca' Granda IRCCS Ospedale Maggiore Policlinico, Università degli Studi, Milano, Italy
| | - Calogero Cammà
- Sezione di Gastroenterologia e Epatologia, Dipartimento di Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro", University of Palermo, Palermo, Italy
| | - Vito Di Marco
- Sezione di Gastroenterologia e Epatologia, Dipartimento di Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro", University of Palermo, Palermo, Italy
| | - Marco Enea
- Sezione di Gastroenterologia e Epatologia, Dipartimento di Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro", University of Palermo, Palermo, Italy
| | - Miriam Longo
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Clinical Sciences and Community Health, Università degli Studi di Milano, Milano, Italy
| | - Grazia Pennisi
- Sezione di Gastroenterologia e Epatologia, Dipartimento di Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro", University of Palermo, Palermo, Italy
| | - Daniele Prati
- Precision Medicine, Department of Transfusion Medicine and Hematology, Fondazione IRCCS Cà Granda Pad Marangoni, Milan, Italy
| | - Rossella Zito
- Sezione di Gastroenterologia e Epatologia, Dipartimento di Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro", University of Palermo, Palermo, Italy
| | - Anna Ludovica Fracanzani
- General Medicine and Metabolic Diseases, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Pathophysiology and Transplantation, Section Internal Medicine, Fondazione Ca' Granda IRCCS Ospedale Maggiore Policlinico, Università degli Studi, Milano, Italy
| | - Antonio Craxì
- Sezione di Gastroenterologia e Epatologia, Dipartimento di Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro", University of Palermo, Palermo, Italy
| | - Jacob George
- Storr Liver Centre, Westmead Institute for Medical Research, Westmead Hospital and University of Sydney, Westmead, NSW, Australia
| | - Stefano Romeo
- Department of Molecular and Clinical Medicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Luca Valenti
- Department of Pathophysiology and Transplantation, Section Internal Medicine, Fondazione Ca' Granda IRCCS Ospedale Maggiore Policlinico, Università degli Studi, Milano, Italy.,Department of Pathophysiology and Transplantion, Università degli Studi, Milan, Italy
| | - Salvatore Petta
- Sezione di Gastroenterologia e Epatologia, Dipartimento di Promozione della Salute, Materno-Infantile, di Medicina Interna e Specialistica di Eccellenza "G. D'Alessandro", University of Palermo, Palermo, Italy
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Sunami Y, Rebelo A, Kleeff J. Lipid Droplet-Associated Factors, PNPLA3, TM6SF2, and HSD17B Proteins in Hepatopancreatobiliary Cancer. Cancers (Basel) 2021; 13:cancers13174391. [PMID: 34503201 PMCID: PMC8431307 DOI: 10.3390/cancers13174391] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/17/2021] [Accepted: 08/25/2021] [Indexed: 12/16/2022] Open
Abstract
Simple Summary Aberrant lipid synthesis and reprogrammed lipid metabolism are both associated with the development and progression of pancreatic and liver cancer. Most cells store fatty acids in the form of triacylglycerols in lipid droplets. Lipid droplets are intracellular organelles that not only store neutral lipids, but also play roles as molecular messengers and signaling factors. Some cancer cells accumulate massive amount of lipid droplets. Lipid droplets and lipid droplet-associated factors are further implicated to mediate proliferation, invasion, metastasis, as well as chemotherapy resistance in several types of cancer. This review dissected recent findings on the role of several lipid droplet-associated factors, patatin-like phospholipase domain-containing 3 (PNPLA3), Transmembrane 6 superfamily member 2 (TM6SF2), and 17β-hydroxysteroid dehydrogenase (HSD17B) 11 and 13 as well as their genetic variations in hepatopancreatobiliary diseases, especially cancer. Abstract Pancreatic and liver cancer are leading causes of cancer deaths, and by 2030, they are projected to become the second and the third deadliest cancer respectively. Cancer metabolism, especially lipid metabolism, plays an important role in progression and metastasis of many types of cancer, including pancreatic and liver cancer. Lipid droplets are intracellular organelles that store neutral lipids, but also act as molecular messengers, and signaling factors. It is becoming increasingly evident that alterations in the regulation of lipid droplets and their associated factors influence the risk of developing not only metabolic disease but also fibrosis and cancer. In the current review article, we summarized recent findings concerning the roles of lipid droplet-associated factors, patatin-like phospholipase domain-containing 3, Transmembrane 6 superfamily member 2, and 17β-hydroxysteroid dehydrogenase 11 and 13 as well as genetic variants in pancreatic and hepatic diseases. A better understanding of cancer type- and cell type-specific roles of lipid droplet-associated factors is important for establishing new therapeutic options in the future.
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