Abstract
Background
Recent genome-wide association studies demonstrated an association between single nucleotide polymorphisms (SNPs) on the glucokinase regulatory gene (GCKR) with hepatic steatosis. This study attempted to investigate the association of GCKR rs780094 and rs1260326 with susceptibility to non-alcoholic fatty liver disease (NAFLD) and its severity.
Methods
The genotypes were assessed on 144 histologically confirmed NAFLD patients and 198 controls using a Sequenom MassARRAY platform.
Results
The GCKR rs1260326 and rs780094 allele T were associated with susceptibility to NAFLD (OR 1.49, 95 % CI 1.09–2.05, p = 0.012; and OR 1.51, 95 % CI 1.09–2.09, p = 0.013, respectively), non-alcoholic steatohepatitis (NASH) (OR 1.55, 95 % CI 1.10–2.17, p = 0.013; and OR 1.56, 95 % CI 1.10–2.20, p = 0.012, respectively) and NASH with significant fibrosis (OR 1.50, 95 % CI 1.01–2.21, p = 0.044; and OR 1.52, 95 % CI 1.03–2.26, p = 0.038, respectively). Following stratification by ethnicity, significant association was seen in Indian patients between the two SNPs and susceptibility to NAFLD (OR 2.64, 95 % CI 1.28–5.43, p = 0.009; and OR 4.35, 95 % CI 1.93–9.81, p < 0.0001, respectively). The joint effect of GCKR with adiponutrin rs738409 indicated greatly increased the risk of NAFLD (OR 4.14, 95 % CI 1.41–12.18, p = 0.010). Histological data showed significant association of GCKR rs1260326 with high steatosis grade (OR 1.76, 95 % CI 1.08–2.85, p = 0.04).
Conclusion
This study suggests that risk allele T of the GCKR rs780094 and rs1260326 is associated with predisposition to NAFLD and NASH with significant fibrosis. The GCKR and PNPLA3 genes interact to result in increased susceptibility to NAFLD.
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Abbreviations
- ALT:
-
Alanine aminotranferase
- ANOVA:
-
Analysis of variance
- AST:
-
Aspartate aminotranferase
- BMI:
-
Body mass index
- CI:
-
Confidence interval
- GCKR :
-
Glucokinase regulatory
- GGT:
-
Gamma-glutamyl transpeptidase
- GMDR:
-
Generalized Multifactor Dimensionality Reduction
- GWAS:
-
Genome-wide association study
- HDL:
-
High density lipoprotein
- HWE:
-
Hardy–Weinberg equilibrium
- LDL:
-
Low density lipoprotein
- NAFLD:
-
Non-alcoholic fatty liver disease
- NASH:
-
Non-alcoholic steatohepatitis
- OR:
-
Odds ratio
- PNPLA3 :
-
Patatin-like phospholipase domain-containing protein 3
- SD:
-
Standard deviation
- SNP:
-
Single nucleotide polymorphism
- UMMC:
-
University of Malaya Medical Center
- US:
-
Ultrasonography
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Acknowledgments
This study was supported by University Malaya Research Grant RG069/09HTM and RG364/11HTM, and by the High Impact Research Ministry of Higher Education (HIRMOHE) Grant E000025-20001.
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The authors declare no conflict of interest.
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H.-L. Tan and S. M. Zain contributed equally to this project and should be considered co-first authors.
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Tan, HL., Zain, S.M., Mohamed, R. et al. Association of glucokinase regulatory gene polymorphisms with risk and severity of non-alcoholic fatty liver disease: an interaction study with adiponutrin gene. J Gastroenterol 49, 1056–1064 (2014). https://doi.org/10.1007/s00535-013-0850-x
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DOI: https://doi.org/10.1007/s00535-013-0850-x