Genome-wide association analyses identify 30 risk loci for IgA nephropathy. Functional annotations of putative causal genes converge on inflammatory signaling pathways and cytokine ligand-receptor pairs, prioritizing potential new drug targets.IgA nephropathy (IgAN) is a progressive form of kidney disease defined by glomerular deposition of IgA. Here we performed a genome-wide association study of 10,146 kidney-biopsy-diagnosed IgAN cases and 28,751 controls across 17 international cohorts. We defined 30 genome-wide significant risk loci explaining 11% of disease risk. A total of 16 loci were new, including TNFSF4/TNFSF18, REL, CD28, PF4V1, LY86, LYN, ANXA3, TNFSF8/TNFSF15, REEP3, ZMIZ1, OVOL1/RELA, ETS1, IGH, IRF8, TNFRSF13B and FCAR. The risk loci were enriched in gene orthologs causing abnormal IgA levels when genetically manipulated in mice. We also observed a positive genetic correlation between IgAN and serum IgA levels. High polygenic score for IgAN was associated with earlier onset of kidney failure. In a comprehensive functional annotation analysis of candidate causal genes, we observed convergence of biological candidates on a common set of inflammatory signaling pathways and cytokine ligand-receptor pairs, prioritizing potential new drug targets.
Genome-wide association analyses define pathogenic signaling pathways and prioritize drug targets for IgA nephropathy / Kiryluk, K., Sanchez-Rodriguez, E., Zhou, X.J., Zanoni, F., Liu, L., Mladkova, N., Khan, A., Marasa, M., Zhang, J.Y., Balderes, O., Sanna-Cherchi, S., Bomback, A.S., Canetta, P.A., Appel, G.B., Radhakrishnan, J., Trimarchi, H., Sprangers, B., Cattran, D.C., Reich, H., Pei, Y., et al.. - In: NATURE GENETICS. - ISSN 1061-4036. - 55:7(2023), pp. 1091-1105. [10.1038/s41588-023-01422-x]
Genome-wide association analyses define pathogenic signaling pathways and prioritize drug targets for IgA nephropathy
Magistroni R.;
2023
Abstract
Genome-wide association analyses identify 30 risk loci for IgA nephropathy. Functional annotations of putative causal genes converge on inflammatory signaling pathways and cytokine ligand-receptor pairs, prioritizing potential new drug targets.IgA nephropathy (IgAN) is a progressive form of kidney disease defined by glomerular deposition of IgA. Here we performed a genome-wide association study of 10,146 kidney-biopsy-diagnosed IgAN cases and 28,751 controls across 17 international cohorts. We defined 30 genome-wide significant risk loci explaining 11% of disease risk. A total of 16 loci were new, including TNFSF4/TNFSF18, REL, CD28, PF4V1, LY86, LYN, ANXA3, TNFSF8/TNFSF15, REEP3, ZMIZ1, OVOL1/RELA, ETS1, IGH, IRF8, TNFRSF13B and FCAR. The risk loci were enriched in gene orthologs causing abnormal IgA levels when genetically manipulated in mice. We also observed a positive genetic correlation between IgAN and serum IgA levels. High polygenic score for IgAN was associated with earlier onset of kidney failure. In a comprehensive functional annotation analysis of candidate causal genes, we observed convergence of biological candidates on a common set of inflammatory signaling pathways and cytokine ligand-receptor pairs, prioritizing potential new drug targets.
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