Genetic research in nephrology is rapidly advancing. Key studies published in 2020 demonstrate that genetic findings can provide new tools for patient diagnosis and risk stratification as well as important insights into kidney physiology and disease mechanisms that could potentially lead to novel therapies.
Key advances
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A genome-wide association study (GWAS) of membranous nephropathy identifies novel loci and validates a genetic risk score that could improve diagnosis of this rare disease1.
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GWAS that integrate genomic and metabolomic data from patients with chronic kidney disease identify novel candidate mechanisms of metabolite detoxification and excretion in the kidney3.
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Analysis of the contributions of monogenic variants and polygenic risk scores to probability of disease in carriers of risk variants for tier 1 genomic conditions demonstrates that polygenic background modifies the risk of monogenic diseases4.
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High-resolution imaging of uromodulin, which is encoded by an important kidney disease gene, identifies a potential mechanism by which this protein might defend against urinary tract infections8.
References
Xie, J. et al. The genetic architecture of membranous nephropathy and its potential to improve non-invasive diagnosis. Nat. Commun. 11, 1600 (2020).
Stanescu, H. C. et al. Risk HLA-DQA1 and PLA(2)R1 alleles in idiopathic membranous nephropathy. N. Engl. J. Med. 364, 616–626 (2011).
Schlosser, P. et al. Genetic studies of urinary metabolites illuminate mechanisms of detoxification and excretion in humans. Nat. Genet. 52, 167–176 (2020).
Fahed, A. C. et al. Polygenic background modifies penetrance of monogenic variants for tier 1 genomic conditions. Nat. Commun. 11, 3635 (2020).
Patel, A. P. et al. Association of rare pathogenic DNA variants for familial hypercholesterolemia, hereditary breast and ovarian cancer syndrome, and lynch syndrome with disease risk in adults according to family history. JAMA Netw. Open 3, e203959 (2020).
Khera, A. V. et al. Genome-wide polygenic scores for common diseases identify individuals with risk equivalent to monogenic mutations. Nat. Genet. 50, 1219–1224 (2018).
Devuyst, O., Olinger, E. & Rampoldi, L. Uromodulin: from physiology to rare and complex kidney disorders. Nat. Rev. Nephrol. 13, 525–544 (2017).
Weiss, G. L. et al. Architecture and function of human uromodulin filaments in urinary tract infections. Science 369, 1005–1010 (2020).
Ghirotto, S. et al. The uromodulin gene locus shows evidence of pathogen adaptation through human evolution. J. Am. Soc. Nephrol. 27, 2983–2996 (2016).
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Köttgen, A., Kiryluk, K. New genetic insights into kidney physiology and disease. Nat Rev Nephrol 17, 85–86 (2021). https://doi.org/10.1038/s41581-020-00383-2
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DOI: https://doi.org/10.1038/s41581-020-00383-2
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