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Causal effects from non-alcoholic fatty liver disease on kidney function: A Mendelian randomization study

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Author(s)
Sehoon ParkSoojin LeeYaerim KimSemin ChoKwangsoo KimYong Chul KimSeung Seok HanHajeong LeeJung Pyo LeeKwon Wook JooChun Soo LimYon Su KimDong Ki Kim
Keimyung Author(s)
Kim, Yae Rim
Department
Dept. of Internal Medicine (내과학)
Journal Title
Liver Int
Issued Date
2022
Volume
42
Issue
2
Keyword
kidneyMendelian randomizationmetabolismnon-alcoholic fatty liver disease
Abstract
Background and aims:
An observational association between nonalcoholic fatty liver disease (NAFLD) and kidney function impairment has been reported. We aimed to investigate the causal effects from NAFLD on estimated glomerular filtration rate (eGFR) by a Mendelian randomization (MR) study.

Methods:
We first performed single-variant MR with rs738409 as a genetic instrument for NAFLD. Another genetic instrument was developed from a genome-wide association study for biopsy-confirmed NAFLD among individuals of European ancestry (1483 cases and 17 781 controls). The eGFR outcome was assessed in individuals of white British ancestry from the UK Biobank (N = 321 405). The associations were reassessed in the negative control subgroup (body mass index < 30 kg/m2, absence of central obesity, and serum alanine aminotransferase level ≤ 20 IU/mL) with a low probability of developing NAFLD. As a replication analysis, a summary-level MR was performed with the European ancestry CKDGen dataset (N = 567 460).

Results:
In the UK Biobank, a genetic predisposition for NAFLD, determined either by the single SNP rs738409 or by the group of variants, was significantly associated with a reduced eGFR even with adjustment for metabolic disorders. Although the associations were not significant in the negative control subgroup with a low probability of developing NAFLD, they were significant in the subgroup with a remaining risk of NAFLD, suggesting the absence of a horizontal pleiotropic pathway. The summary-level MR from the CKDGen dataset supported the causal effects of NAFLD on reduced eGFR.

Conclusions:
This MR analysis supports the causal reduction in kidney function by NAFLD.
Keimyung Author(s)(Kor)
김예림
Publisher
School of Medicine (의과대학)
Citation
Sehoon Park et al. (2022). Causal effects from non-alcoholic fatty liver disease on kidney function: A Mendelian randomization study. Liver Int, 42(2), 412–418. doi: 10.1111/liv.15118
Type
Article
ISSN
1478-3231
Source
https://onlinelibrary.wiley.com/doi/10.1111/liv.15118
DOI
10.1111/liv.15118
URI
https://kumel.medlib.dsmc.or.kr/handle/2015.oak/44141
Appears in Collections:
1. School of Medicine (의과대학) > Dept. of Internal Medicine (내과학)
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