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Valluru MK, Chung NK, Gilchrist M, Butland L, Cook J, Takou A, Dixit A, Weedon MN, Ong ACM. A founder UMOD variant is a common cause of hereditary nephropathy in the British population. J Med Genet 2023; 60:397-405. [PMID: 36038257 PMCID: PMC10086494 DOI: 10.1136/jmg-2022-108704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 08/10/2022] [Indexed: 11/04/2022]
Abstract
BACKGROUND Monogenic disorders are estimated to account for 10%-12% of patients with kidney failure. We report the unexpected finding of an unusual uromodulin (UMOD) variant in multiple pedigrees within the British population and demonstrate a shared haplotype indicative of an ancestral variant. METHODS Probands from 12 apparently unrelated pedigrees with a family history of kidney failure within a geographically contiguous UK region were shown to be heterozygous for a pathogenic variant of UMOD c.278_289delTCTGCCCCGAAG insCCGCCTCCT. RESULTS A total of 88 clinically affected individuals were identified, all born in the UK and of white British ethnicity. 20 other individuals with the variant were identified in the UK 100,000 Genomes (100K) Project and 9 from UK Biobank (UKBB). A common extended haplotype was present in 5 of the UKBB individuals who underwent genome sequencing which was only present in <1 in 5000 of UKBB controls. Significantly, rare variants (<1 in 250 general population) identified within 1 Mb of the UMOD variant by genome sequencing were detected in all of the 100K individuals, indicative of an extended shared haplotype. CONCLUSION Our data confirm a likely founder UMOD variant with a wide geographical distribution within the UK. It should be suspected in cases of unexplained familial nephropathy presenting in patients of white British ancestry.
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Affiliation(s)
- Manoj K Valluru
- Academic Nephrology Unit, Department of Infection, Immunity and Cardiovascular Disease, The University of Sheffield Medical School, Sheffield, UK
| | - Noelle Kx Chung
- Academic Nephrology Unit, Department of Infection, Immunity and Cardiovascular Disease, The University of Sheffield Medical School, Sheffield, UK
| | - Mark Gilchrist
- College of Medicine and Health, University of Exeter, Exeter, UK
| | - Laura Butland
- Department of Clinical Genetics, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - Jackie Cook
- Department of Clinical Genetics, Sheffield Children's Hospital NHS Foundation Trust, Sheffield, UK
| | - Anna Takou
- Department of Histopathology, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - Abhijit Dixit
- Department of Clinical Genetics, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - Michael N Weedon
- Institute of Biomedical and Clinical Science, University of Exeter, Exeter, UK
| | - Albert C M Ong
- Academic Nephrology Unit, Department of Infection, Immunity and Cardiovascular Disease, The University of Sheffield Medical School, Sheffield, UK
- Sheffield Kidney Institute, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
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Gong K, Xia M, Wang Y, Wang N, Liu Y, Zhang VW, Cheng H, Chen Y. Autosomal dominant tubulointerstitial kidney disease genotype and phenotype correlation in a Chinese cohort. Sci Rep 2021; 11:3615. [PMID: 33574344 PMCID: PMC7878898 DOI: 10.1038/s41598-020-79331-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 12/02/2020] [Indexed: 12/18/2022] Open
Abstract
Genes of UMOD, HNF1B, MUC1, REN and SEC61A1 were reported to be associated with autosomal dominant tubulointerstitial kidney disease (ADTKD). 48 probands and their family members (N = 27) were enrolled in this genetic screening study. A combination of methods was employed for comprehensive molecular analysis of both copy number variations (CNVs) and single nucleotide variants (SNVs). 35 probands were followed for years. The phenotype-genotype and genotype-outcome correlation were inferred from these datasets. In this cohort, 18 probands were diagnosed with ADTKD, according to Kidney Disease: Improving Global Outcomes (KDIGO) guideline. Moreover, 11 probands were diagnosed with ADTKD-UMOD, one with ADTKD-REN and one with ADTKD-HNF1B, based on molecularly confirmed pathogenic variants. The 11 UMOD variants were mainly located in codons 28 to 289 and half of the variants were found to change the cysteine amino acid. According to the follow-up data, suspected ADTKD individuals had a better prognosis compared to ADTKD individuals (p = 0.029). Individuals with a cysteine substitution in the UMOD gene appeared to have a better prognosis than individuals with other amino acid substitutions (p = 0.015).
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Affiliation(s)
- Kunjing Gong
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, 100034, China.,Institute of Nephrology, Peking University, Beijing, 100034, China.,Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, 100034, China.,Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing, 100034, China
| | - Min Xia
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, 100034, China.,Institute of Nephrology, Peking University, Beijing, 100034, China.,Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, 100034, China.,Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing, 100034, China
| | - Yaqin Wang
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, 100034, China.,Institute of Nephrology, Peking University, Beijing, 100034, China.,Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, 100034, China.,Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing, 100034, China
| | - Na Wang
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, 100034, China.,Institute of Nephrology, Peking University, Beijing, 100034, China.,Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, 100034, China.,Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing, 100034, China
| | - Ying Liu
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, 100034, China.,Institute of Nephrology, Peking University, Beijing, 100034, China.,Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, 100034, China.,Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing, 100034, China
| | - Victor Wei Zhang
- AmCare Genomics Laboratory, Guangzhou, China.,Baylor College of Medicine Department of Human and Molecular Genetics, Houston, USA
| | - Hong Cheng
- Division of Nephrology, Beijing AnZhen Hospital, Capital Medical University, Beijing, 100029, China
| | - Yuqing Chen
- Renal Division, Department of Medicine, Peking University First Hospital, Beijing, 100034, China. .,Institute of Nephrology, Peking University, Beijing, 100034, China. .,Key Laboratory of Renal Disease, Ministry of Health of China, Beijing, 100034, China. .,Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Ministry of Education, Beijing, 100034, China.
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