Cited by 651Liver Disease Diagnosis and TreatmentLiver physiology and pathologyLiver Diseases and Immunity

Homozygosity for the patatin‐like phospholipase‐3/adiponutrin I148M polymorphism influences liver fibrosis in patients with nonalcoholic fatty liver disease†

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Valenti, Luca, Al‐Serri, Ahmad, Daly, Ann K., Galmozzi, Enrico, Rametta, Raffaela, Dongiovanni, Paola, Nobili, Valerio, Mozzi, Enrico +7 more·2010·Hepatology

Abstract

UNLABELLED: Inherited factors play a major role in the predisposition to nonalcoholic fatty liver disease (NAFLD), and the rs738409 C-->G polymorphism of PNPLA3/adiponutrin, encoding for the isoleucine-to-methionine substitution at residue 148 (I148M) protein variant, has recently been recognized as a major determinant of liver fat content. However, the effect of the rs738409 polymorphism on the severity of liver fibrosis in patients with NAFLD is still unknown. In this study, we considered 253 Italian patients, 179 healthy controls, and 71 family trios with an affected child with NAFLD. Analyses were replicated in 321 patients from the United Kingdom. The rs738409 polymorphism was determined by TaqMan assays. Liver histology was scored according to Kleiner et al. Hepatic expression of genes regulating liver damage was assessed by real-time polymerase chain reaction in 52 patients. The rs738409 GG genotype was more prevalent in patients than in controls (14% versus 3%, adjusted odds ratio [OR] = 3.29, 95% confidence interval [CI] = 1.8-6.9), and in the family study, the G allele was overtransmitted to affected children (P = 0.001). In Italian and United Kingdom patients, adiponutrin genotype influenced alanine aminotransferase levels and the severity of steatosis. Adiponutrin genotype was associated with the expression of genes involved in the steatosis-related liver damage, including the proapoptotic molecule Fas ligand. In the whole series combined, adiponutrin genotype was associated with steatosis grade >1 (OR = 1.35, 95% CI = 1.04-1.76), nonalcoholic steatohepatitis (OR = 1.5, 95% CI = 1.12-2.04), and fibrosis stage >1 (OR = 1.5, 95% CI = 1.09-2.12), independent of age, body mass index, and diabetes. Adiponutrin genotype demonstrated a dose effect with heterozygote risk intermediate between CC and GG homozygotes. CONCLUSION: In patients with NAFLD, adiponutrin rs738409 C-->G genotype, encoding for I148M, is associated with the severity of steatosis and fibrosis and the presence of nonalcoholic steatohepatitis.

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  1. Accili D, Arden KC. FoxOs at the crossroads of cellular metabolism, differentiation, and transformation. Cell 2004;117:421-426.

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Authors
Valenti, L., Al‐Serri, A., Daly, A. K., Galmozzi, E., Rametta, R., Dongiovanni, P., Nobili, V., Mozzi, E., Roviaro, G., Vanni, E., Bugianesi, E., Maggioni, M., Fracanzani, A. L., Fargion, S., & Day, C. P.
Affiliations
  • University of Milan (IT)
  • Newcastle University (GB)
  • University of Turin (IT)
  • Ospedale San Paolo (IT)
Corresponding author
Fargion, Silvia
Venue
Hepatology
Published
2010-04
Volume
51
Issue
4
Pages
1209-1217
ISSN
0270-9139 (ISSN-L)
OpenAlex
W1979443397
Cited by
651
References
36
Citations by year
2026: 13 · 2025: 22 · 2024: 28 · 2023: 32 · 2022: 45 · 2021: 45 · 2020: 54 · 2019: 26 · 2018: 32 · 2017: 46 · 2016: 60 · 2015: 57 · 2014: 37 · 2013: 39 · 2012: 43
FWCI
35.60
Type
journal article
Language
en
Open access
Locations
  • Hepatology (publishedVersion)
  • PubMed (publishedVersion)
  • IRIS Research product catalog (Sapienza University of Rome) (submittedVersion)
  • Institutional Research Information System University of Turin (University of Turin) (submittedVersion)
  • Newcastle University ePrints (Newcastle Univesity)
Topics
  • Health Sciences › Medicine › Epidemiology › Liver Disease Diagnosis and Treatment
  • Health Sciences › Medicine › Hepatology › Liver physiology and pathology
  • Health Sciences › Medicine › Hepatology › Liver Diseases and Immunity
Keywords
non-alcoholic fatty liver disease, liver fibrosis, PNPLA3, I148M polymorphism, rs738409, genetic susceptibility, nonalcoholic steatohepatitis, hepatic steatosis, Fas ligand, family trios, dose-dependent effects
MeSH terms
Acyltransferases, Adult, Aged, Fatty Liver, Female, Genotype, Homozygote, Humans, Lipase, Liver Cirrhosis, Male, Membrane Proteins, Middle Aged, Polymorphism, Genetic, Phospholipases A2, Calcium-Independent

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