Genome-wide association meta-analyses and fine-mapping elucidate pathways influencing albuminuria



Teumer, Alexander, Li, Yong, Ghasemi, Sahar, Prins, Bram P, Wuttke, Matthias, Hermle, Tobias, Giri, Ayush, Sieber, Karsten B, Qiu, Chengxiang, Kirsten, Holger
et al (show 176 more authors) (2019) Genome-wide association meta-analyses and fine-mapping elucidate pathways influencing albuminuria. NATURE COMMUNICATIONS, 10 (1). 4130-.

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Abstract

Increased levels of the urinary albumin-to-creatinine ratio (UACR) are associated with higher risk of kidney disease progression and cardiovascular events, but underlying mechanisms are incompletely understood. Here, we conduct trans-ethnic (n = 564,257) and European-ancestry specific meta-analyses of genome-wide association studies of UACR, including ancestry- and diabetes-specific analyses, and identify 68 UACR-associated loci. Genetic correlation analyses and risk score associations in an independent electronic medical records database (n = 192,868) reveal connections with proteinuria, hyperlipidemia, gout, and hypertension. Fine-mapping and trans-Omics analyses with gene expression in 47 tissues and plasma protein levels implicate genes potentially operating through differential expression in kidney (including TGFB1, MUC1, PRKCI, and OAF), and allow coupling of UACR associations to altered plasma OAF concentrations. Knockdown of OAF and PRKCI orthologs in Drosophila nephrocytes reduces albumin endocytosis. Silencing fly PRKCI further impairs slit diaphragm formation. These results generate a priority list of genes and pathways for translational research to reduce albuminuria.

Item Type: Article
Uncontrolled Keywords: Animals, Humans, Drosophila melanogaster, Albuminuria, Diabetes Mellitus, Genetic Predisposition to Disease, Creatinine, Risk Factors, Chromosome Mapping, Gene Expression Regulation, Meta-Analysis as Topic, Genome-Wide Association Study, Genetic Loci, Phenomics
Depositing User: Symplectic Admin
Date Deposited: 30 Sep 2019 12:24
Last Modified: 19 Jan 2023 00:25
DOI: 10.1038/s41467-019-11576-0
Open Access URL: https://www.nature.com/articles/s41467-019-11576-0...
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3056443