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Wen H, Li Q, Mei S, Cai J, Huang X, Zhao J. A novel frameshift mutation in the NHS gene causes Nance-Horan syndrome in a Chinese family. Gene 2024; 907:148268. [PMID: 38350513 DOI: 10.1016/j.gene.2024.148268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 12/01/2023] [Accepted: 02/07/2024] [Indexed: 02/15/2024]
Affiliation(s)
- Huaming Wen
- Department of Ophthalmology, Chang'an Hospital of Dongguan, Dongguan 538240, Guangdong, China
| | - Qianwen Li
- Department of Oral & Maxillofacial Surgery, Shenzhen Stomatology Hospital, The Affiliated Shenzhen stomatology Hospital of Shenzhen University, Shenzhen 518000, Guangdong, China
| | - Shaoyi Mei
- Shenzhen Eye Hospital Affiliated to Jinan University, Shenzhen Eye Institute, Shenzhen 518040, Guangdong, China
| | - Jiamin Cai
- Shenzhen Eye Hospital Affiliated to Jinan University, Shenzhen Eye Institute, Shenzhen 518040, Guangdong, China
| | - Xiaosheng Huang
- Shenzhen Eye Hospital Affiliated to Jinan University, Shenzhen Eye Institute, Shenzhen 518040, Guangdong, China.
| | - Jun Zhao
- Department of Ophthalmology, Shenzhen People's Hospital (The Second Clinical Medical College, Jinan University, The First Affiliated Hospital, Southern University of Science and Technology), Shenzen 518020, Guangdong, China.
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2
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Yu X, Zhao Y, Yang Z, Chen X, Kang G. Genetic research on Nance-Horan syndrome caused by a novel mutation in the NHS gene. Gene 2024; 906:148223. [PMID: 38286268 DOI: 10.1016/j.gene.2024.148223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Revised: 01/21/2024] [Accepted: 01/26/2024] [Indexed: 01/31/2024]
Affiliation(s)
- Xuelin Yu
- Department of Ophthalmology, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China.
| | - Yueyue Zhao
- Department of Ophthalmology, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China.
| | - Zhenghua Yang
- Department of Ophthalmology, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China.
| | - Xing Chen
- Department of Ophthalmology, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China.
| | - Gangjing Kang
- Department of Ophthalmology, The Affiliated Hospital of Southwest Medical University, Luzhou 646000, China.
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3
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Shang S, Wang C, Chen L, Shen W, Xie Y, Li W, Li Q. Novel method for the genomic analysis of PKD1 mutation in autosomal dominant polycystic kidney disease. Front Cell Dev Biol 2023; 10:937580. [PMID: 36699011 PMCID: PMC9868468 DOI: 10.3389/fcell.2022.937580] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 12/08/2022] [Indexed: 01/11/2023] Open
Abstract
Autosomal dominant polycystic kidney disease (ADPKD) is the most common inherited kidney disease. Although next-generation sequencing (NGS) technology can be used to sequence tens of thousands of DNA molecules simultaneously. It has poor capture efficiency for the six PKD1 pseudogenes and GC-rich regions. Multiplex ligation-dependent probe amplification (MLPA) technology can detect consecutive deletions of exons, but it is less sensitive for single-base mutations. However, pathogenic genes might not be detected in some patients, even when using the above methods. Improving the detection rate of pathogenic genes is an important technical problem hindering clinical diagnosis of ADPKD. Four pedigrees of ADPKD patients with mutation sites not identified by NGS were examined by other methods. First, MLPA was performed. Then, pedigrees in which MLPA did not identify pathogenic genes were subjected to multiplex polymerase chain reaction (MPCR) and targeted region sequencing. Finally, the detected mutation sites were verified by Sanger sequencing. The results showed that MLPA detected the following PKD1 exonic deletion mutations in three pedigrees: PKD1-18 nt-290 nt, PKD1-up-257 nt, PKD1-up-444 nt and PKD1-3 nt-141 nt. A new mutation site was identified through targeted region sequencing in one pedigree: PKD1 NM_001009944: c.151T > C at the protein level, described as p. Cys51Arg. In summary, we established a system of genetic detection and analytical methods, from NGS to MLPA to targeted region sequencing and finally to Sanger sequencing. We combined MPCR and targeted region sequencing for the first time in ADPKD diagnosis, which further improved diagnosis accuracy. Moreover, we identified one new missense mutation and four new deletion mutations.
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Affiliation(s)
- Shunlai Shang
- Department of Nephrology, China-Japan Friendship Hospital, Beijing, China,Department of Nephrology, Chinese PLA General Hospital, Medical School of Chinese PLA, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China,School of Medicine, Nankai University, Tianjin, China
| | - Chao Wang
- Department of Nephrology, Chinese PLA General Hospital, Medical School of Chinese PLA, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China,Clinical Medical School, Guangdong Pharmaceutical University, Guangzhou, China
| | - Lang Chen
- Department of Nephrology, Chinese PLA General Hospital, Medical School of Chinese PLA, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China
| | - Wanjun Shen
- Department of Nephrology, Chinese PLA General Hospital, Medical School of Chinese PLA, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China
| | - Yuansheng Xie
- Department of Nephrology, Chinese PLA General Hospital, Medical School of Chinese PLA, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China
| | - Wenge Li
- Department of Nephrology, China-Japan Friendship Hospital, Beijing, China,*Correspondence: Wenge Li, ; Qinggang Li,
| | - Qinggang Li
- Department of Nephrology, Chinese PLA General Hospital, Medical School of Chinese PLA, Chinese PLA Institute of Nephrology, State Key Laboratory of Kidney Diseases, National Clinical Research Center for Kidney Diseases, Beijing, China,*Correspondence: Wenge Li, ; Qinggang Li,
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4
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Prominent and Regressive Brain Developmental Disorders Associated with Nance-Horan Syndrome. Brain Sci 2021; 11:brainsci11091150. [PMID: 34573171 PMCID: PMC8465299 DOI: 10.3390/brainsci11091150] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 08/26/2021] [Accepted: 08/27/2021] [Indexed: 11/17/2022] Open
Abstract
Nance-Horan syndrome (NHS) is a rare X-linked developmental disorder caused mainly by loss of function variants in the NHS gene. NHS is characterized by congenital cataracts, dental anomalies, and distinctive facial features, and a proportion of the affected individuals also present intellectual disability and congenital cardiopathies. Despite identification of at least 40 distinct hemizygous variants leading to NHS, genotype-phenotype correlations remain largely elusive. In this study, we describe a Sicilian family affected with congenital cataracts and dental anomalies and diagnosed with NHS by whole-exome sequencing (WES). The affected boy from this family presented a late regression of cognitive, motor, language, and adaptive skills, as well as broad behavioral anomalies. Furthermore, brain imaging showed corpus callosum anomalies and periventricular leukoencephalopathy. We expand the phenotypic and mutational NHS spectrum and review potential disease mechanisms underlying the central neurological anomalies and the potential neurodevelopmental features associated with NHS.
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5
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Hernández V, Pascual-Camps I, Aparisi MJ, Martínez-Matilla M, Martínez F, Cerón JA, Pedrola L. Great clinical variability of Nance Horan syndrome due to deleterious NHS mutations in two unrelated Spanish families. Ophthalmic Genet 2019; 40:553-557. [PMID: 31755796 DOI: 10.1080/13816810.2019.1692362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Background: Nance-Horan syndrome (NHS) is an X-linked rare congenital disorder caused by mutations in the NHS gene. Clinical manifestations include congenital cataracts, facial and dental dysmorphism and, in some cases, intellectual disability. The aim of the present work was to identify the genetic cause of this disease in two unrelated Spanish NHS families and to determine the relative involvement of this gene in the pathogenesis.Materials and methods: Four members of a two-generation family, three males and one female (Family 1), and seven members of a three-generation family, two males and five females (Family 2) were recruited and their index cases were screened for mutations in the NHS gene and 26 genes related with ocular congenital anomalies by NGS (Next Generation Sequencing).Results: Two pathogenic variants were found in the NHS gene: a nonsense mutation (p.Arg373X) and a frameshift mutation (p.His669ProfsX5). These mutations were found in the two unrelated NHS families with different clinical manifestations.Conclusions: In the present study, we identified two truncation mutations (one of them novel) in the NHS gene, associated with NHS. Given the wide clinical variability of this syndrome, NHS may be difficult to detect in individuals with subtle clinical manifestations or when congenital cataracts are the primary clinical manifestation which makes us suspect that it can be underdiagnosed. Combination of genetic studies and clinical examinations are essential for the clinical diagnosis optimization.
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Affiliation(s)
- V Hernández
- Genetics Unit, La Fe University and Polytechnic Hospital, Valencia, Spain
| | - I Pascual-Camps
- Department of Ophthalmology, La Fe University and Polytechnic Hospital, Valencia, Spain
| | - M J Aparisi
- Genomic Unit, Health Research Institute Hospital La Fe (IIS La Fe), Valencia, Spain
| | - M Martínez-Matilla
- Genomic Unit, Health Research Institute Hospital La Fe (IIS La Fe), Valencia, Spain
| | - F Martínez
- Genetics Unit, La Fe University and Polytechnic Hospital, Valencia, Spain.,Genomic Unit, Health Research Institute Hospital La Fe (IIS La Fe), Valencia, Spain
| | - J A Cerón
- Genetics Unit, La Fe University and Polytechnic Hospital, Valencia, Spain
| | - L Pedrola
- Genomic Unit, Health Research Institute Hospital La Fe (IIS La Fe), Valencia, Spain
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6
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Wei M, Qi A, Mo H, Wu K, Ma X, Wang B. A novel NHS mutation in a Chinese family with Nance‑Horan Syndrome. Mol Med Rep 2019; 19:4419-4424. [PMID: 30942463 DOI: 10.3892/mmr.2019.10106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 11/15/2018] [Indexed: 11/06/2022] Open
Abstract
Nance‑Horan syndrome (NHS) is a rare X‑linked disorder with various clinical manifestations. The present study aimed to identify the pathogenic mutation causing NHS in a three‑generation Chinese family with 4 individuals presenting primarily with congenital cataracts. The genomic DNA of 5 individuals was collected, and family history and clinical information were recorded. Whole exome sequencing was performed on the proband, and candidate mutations were filtered by a series of screening processes and validated by Sanger sequencing. The identified pathogenic mutation was confirmed by co‑segregation analysis. Finally, a novel frameshift mutation (NM_001291867.1: c.302dupA; p.Ala102fs) was identified in the NHS actin remodeling regulator (NHS) gene, which co‑segregated with congenital cataracts in this family. Carrier females exhibited similar but milder clinical symptoms compared with the affected male. These clinical symptoms were consistent with the phenotypic features of the NHS‑associated disease, NHS. In summary, the present study identified a novel NHS mutation in a Chinese family with atypical NHS; the results broaden the known pathogenic mutation spectrum of NHS and will aid in the genetic counseling of patients with NHS. The data from the present study also suggest that genetic analysis may be required for the diagnosis of this disease.
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Affiliation(s)
- Meirong Wei
- Department of Ophthalmology, Liuzhou Maternal and Child Healthcare Hospital, Liuzhou, Guangxi 545001, P.R. China
| | - Anhui Qi
- Graduate School of Peking Union Medical College, Beijing 100730, P.R. China
| | - Haiming Mo
- Department of Ophthalmology, Liuzhou Maternal and Child Healthcare Hospital, Liuzhou, Guangxi 545001, P.R. China
| | - Kailin Wu
- Department of Ophthalmology, Liuzhou Maternal and Child Healthcare Hospital, Liuzhou, Guangxi 545001, P.R. China
| | - Xu Ma
- Center for Genetics, National Research Institute for Family Planning, Beijing 100081, P.R. China
| | - Binbin Wang
- Graduate School of Peking Union Medical College, Beijing 100730, P.R. China
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7
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Ling C, Sui R, Yao F, Wu Z, Zhang X, Zhang S. Whole exome sequencing identified a novel truncation mutation in the NHS gene associated with Nance-Horan syndrome. BMC MEDICAL GENETICS 2019; 20:14. [PMID: 30642278 PMCID: PMC6332535 DOI: 10.1186/s12881-018-0725-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 11/21/2018] [Indexed: 11/10/2022]
Abstract
Background Nance-Horan syndrome (NHS) is an X-linked inheritance disorder characterized by bilateral congenital cataracts, and facial and dental dysmorphism. This disorder is caused by mutations in the NHS gene. However, NHS may be difficult to detect in individuals with subtle facial dysmorphism and dental abnormalities in whom congenital cataracts are the primary clinical manifestations. Methods In this study, we present a three-generation family with NHS. Whole exome sequencing was performed to determine the potential pathogenic variant in the proband. Further validation was explored with Sanger sequencing in 9 of the available individuals of the family and additional 200 controls. Results A novel truncation mutation in gene NHS (c.C4449G, p.Tyr1483Ter) was found in the proband, who presented with a long-narrow face, prominent nose and large anteverted pinnae ear, screw-driver like incisors, mild mulberry like molars, one missing maxillary second molar and malocclusion. We found this mutation was detected in 2 male patients and 4 female carriers in the family. However, the mutation was never detected in the control subjects. Conclusions In conclusion, we identified a novel truncation mutation in the NHS gene, which might associate with NHS. Our review on the NHS studies illustrated that NHS has significantly clinical heterogeneity. And NHS mutations in the NHS-affected individuals typically result in premature truncation of the protein. And the new mutation revealed in this study would highlight the understanding of the causative mutations of NHS. Electronic supplementary material The online version of this article (10.1186/s12881-018-0725-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Chao Ling
- Laboratory of Clinical Genetics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Ruifang Sui
- Department of Ophthalmology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Fengxia Yao
- Laboratory of Clinical Genetics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Zhihong Wu
- Central Research Laboratory, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
| | - Xue Zhang
- Laboratory of Clinical Genetics, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China. .,McKusick-Zhang Center for Genetic Medicine, State Key Laboratory of Medical Molecular Biology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, School of Basic Medicine, Peking Union Medical College, Beijing, 100005, China.
| | - Shuyang Zhang
- Department of Cardiology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China
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8
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Wu Y, Yuan L, Guo Y, Lu A, Zheng W, Xu H, Yang Y, Hu P, Gu S, Wang B, Deng H. Identification of a GNE homozygous mutation in a Han-Chinese family with GNE myopathy. J Cell Mol Med 2018; 22:5533-5538. [PMID: 30160005 PMCID: PMC6201217 DOI: 10.1111/jcmm.13827] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Accepted: 07/09/2018] [Indexed: 12/11/2022] Open
Abstract
GNE myopathy is a rare, recessively inherited, early adult‐onset myopathy, characterized by distal and proximal muscle degeneration which often spares the quadriceps. It is caused by mutations in the UDP‐N‐acetylglucosamine 2‐epimerase/N‐acetylmannosamine kinase gene (GNE). This study aimed to identify the disease‐causing mutation in a three‐generation Han‐Chinese family with members who have been diagnosed with myopathy. A homozygous missense mutation, c.1627G>A (p.V543M) in the GNE gene co‐segregates with the myopathy present in this family. A GNE myopathy diagnosis is evidenced by characteristic clinical manifestations, rimmed vacuoles in muscle biopsies and the presence of biallelic GNE mutations. This finding broadens the GNE gene mutation spectrum and extends the GNE myopathy phenotype spectrum.
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Affiliation(s)
- Yuan Wu
- Center for Experimental Medicine, The Third Xiangya Hospital, Central South University, Changsha, China.,Department of Clinical Laboratory, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Lamei Yuan
- Center for Experimental Medicine, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Yi Guo
- Center for Experimental Medicine, The Third Xiangya Hospital, Central South University, Changsha, China.,Department of Medical Information, Information Security and Big Data Research Institute, Central South University, Changsha, China
| | - Anjie Lu
- Department of Orthopedics, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Wen Zheng
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Hongbo Xu
- Center for Experimental Medicine, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Yan Yang
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Pengzhi Hu
- Department of Radiology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Shaojuan Gu
- Department of Neurology, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Bingqi Wang
- Center for Experimental Medicine, The Third Xiangya Hospital, Central South University, Changsha, China
| | - Hao Deng
- Center for Experimental Medicine, The Third Xiangya Hospital, Central South University, Changsha, China
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9
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A novel small deletion in the NHS gene associated with Nance-Horan syndrome. Sci Rep 2018; 8:2398. [PMID: 29402928 PMCID: PMC5799206 DOI: 10.1038/s41598-018-20787-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Accepted: 01/24/2018] [Indexed: 11/29/2022] Open
Abstract
Nance-Horan syndrome is a rare X-linked recessive inherited disease with clinical features including severe bilateral congenital cataracts, characteristic facial and dental abnormalities. Data from Chinese Nance-Horan syndrome patients are limited. We assessed the clinical manifestations of a Chinese Nance-Horan syndrome pedigree and identified the genetic defect. Genetic analysis showed that 3 affected males carried a novel small deletion in NHS gene, c.263_266delCGTC (p.Ala89TrpfsTer106), and 2 female carriers were heterozygous for the same variant. All 3 affected males presented with typical Nance-Horan syndrome features. One female carrier displayed lens opacities centered on the posterior Y-suture in both eyes, as well as mild dental abnormalities. We recorded the clinical features of a Chinese Nance-Horan syndrome family and broadened the spectrum of mutations in the NHS gene.
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Gómez-Laguna L, Martínez-Herrera A, Reyes-de la Rosa ADP, García-Delgado C, Nieto-Martínez K, Fernández-Ramírez F, Valderrama-Atayupanqui TY, Morales-Jiménez AB, Villa-Morales J, Kofman S, Cervantes A, Morán-Barroso VF. Nance-Horan syndrome in females due to a balanced X;1 translocation that disrupts the NHS gene: Familial case report and review of the literature. Ophthalmic Genet 2017; 39:56-62. [PMID: 28922055 DOI: 10.1080/13816810.2017.1363245] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The Nance-Horan syndrome is an X-linked disorder characterized by congenital cataract, facial features, microcornea, microphthalmia, and dental anomalies; most of the cases are due to NHS gene mutations on Xp22.13. Heterozygous carrier females generally present less severe features, and up to 30% of the affected males have intellectual disability. We describe two patients, mother and daughter, manifesting Nance-Horan syndrome. The cytogenetic and molecular analyses demonstrated a 46,X,t(X;1)(p22.13;q22) karyotype in each of them. No copy-number genomic imbalances were detected by high-density microarray analysis. The mother had a preferential inactivation of the normal X chromosome; expression analysis did not detect any mRNA isoform of NHS. This is the first report of Nance-Horan syndrome due to a skewed X chromosome inactivation resulting from a balanced translocation t(X;1) that disrupts the NHS gene expression, with important implications for clinical presentation and genetic counseling.
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Affiliation(s)
- Laura Gómez-Laguna
- a Service of Genetics , Hospital General de México Dr. Eduardo Liceaga , Mexico City , Mexico
| | | | | | | | - Karem Nieto-Martínez
- b Faculty of Medicine , Universidad Nacional Autónoma de México (UNAM) , Mexico City , Mexico
| | | | | | | | - Judith Villa-Morales
- c Department of Genetics , Hospital Infantil de México Federico Gómez , Mexico City , Mexico
| | - Susana Kofman
- a Service of Genetics , Hospital General de México Dr. Eduardo Liceaga , Mexico City , Mexico
| | - Alicia Cervantes
- a Service of Genetics , Hospital General de México Dr. Eduardo Liceaga , Mexico City , Mexico.,b Faculty of Medicine , Universidad Nacional Autónoma de México (UNAM) , Mexico City , Mexico
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Shoshany N, Avni I, Morad Y, Weiner C, Einan-Lifshitz A, Pras E. NHS Gene Mutations in Ashkenazi Jewish Families with Nance-Horan Syndrome. Curr Eye Res 2017; 42:1240-1244. [PMID: 28557584 DOI: 10.1080/02713683.2017.1304560] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
PURPOSE To describe ocular and extraocular abnormalities in two Ashkenazi Jewish families with infantile cataract and X-linked inheritance, and to identify their underlying mutations. METHODS Seven affected members were recruited. Medical history, clinical findings, and biometric measurements were recorded. Mutation analysis of the Nance-Horan syndrome (NHS) gene was performed by direct sequencing of polymerase chain reaction-amplified exons. RESULTS An unusual anterior Y-sutural cataract was documented in the affected male proband. Other clinical features among examined patients included microcorneas, long and narrow faces, and current or previous dental anomalies. A nonsense mutation was identified in each family, including a previously described 742 C>T, p.(Arg248*) mutation in Family A, and a novel mutation 2915 C>A, p.(Ser972*) in Family B. CONCLUSIONS Our study expands the repertoire of NHS mutations and the related phenotype, including newly described anterior Y-sutural cataract and dental findings.
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Affiliation(s)
- Nadav Shoshany
- a The Matlow's Ophthalmo-genetics Laboratory , Assaf-Harofeh Medical Center , Zerifin , Israel.,b Department of Ophthalmology , Assaf-Harofeh Medical Center , Zerifin , Israel
| | - Isaac Avni
- a The Matlow's Ophthalmo-genetics Laboratory , Assaf-Harofeh Medical Center , Zerifin , Israel.,b Department of Ophthalmology , Assaf-Harofeh Medical Center , Zerifin , Israel.,c Sackler Faculty of Medicine , Tel Aviv University , Tel Aviv , Israel
| | - Yair Morad
- b Department of Ophthalmology , Assaf-Harofeh Medical Center , Zerifin , Israel.,c Sackler Faculty of Medicine , Tel Aviv University , Tel Aviv , Israel
| | - Chen Weiner
- a The Matlow's Ophthalmo-genetics Laboratory , Assaf-Harofeh Medical Center , Zerifin , Israel
| | - Adi Einan-Lifshitz
- b Department of Ophthalmology , Assaf-Harofeh Medical Center , Zerifin , Israel.,c Sackler Faculty of Medicine , Tel Aviv University , Tel Aviv , Israel
| | - Eran Pras
- a The Matlow's Ophthalmo-genetics Laboratory , Assaf-Harofeh Medical Center , Zerifin , Israel.,b Department of Ophthalmology , Assaf-Harofeh Medical Center , Zerifin , Israel.,c Sackler Faculty of Medicine , Tel Aviv University , Tel Aviv , Israel
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12
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Tian Q, Li Y, Kousar R, Guo H, Peng F, Zheng Y, Yang X, Long Z, Tian R, Xia K, Lin H, Pan Q. A novel NHS mutation causes Nance-Horan Syndrome in a Chinese family. BMC MEDICAL GENETICS 2017; 18:2. [PMID: 28061824 PMCID: PMC5219716 DOI: 10.1186/s12881-016-0360-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Accepted: 12/02/2016] [Indexed: 11/21/2022]
Abstract
Background Nance-Horan Syndrome (NHS) (OMIM: 302350) is a rare X-linked developmental disorder characterized by bilateral congenital cataracts, with occasional dental anomalies, characteristic dysmorphic features, brachymetacarpia and mental retardation. Carrier females exhibit similar manifestations that are less severe than in affected males. Methods Here, we report a four-generation Chinese family with multiple affected individuals presenting Nance-Horan Syndrome. Whole-exome sequencing combined with RT-PCR and Sanger sequencing was used to search for a genetic cause underlying the disease phenotype. Results Whole-exome sequencing identified in all affected individuals of the family a novel donor splicing site mutation (NM_198270: c.1045 + 2T > A) in intron 4 of the gene NHS, which maps to chromosome Xp22.13. The identified mutation results in an RNA processing defect causing a 416-nucleotide addition to exon 4 of the mRNA transcript, likely producing a truncated NHS protein. Conclusions The donor splicing site mutation NM_198270: c.1045 + 2T > A of the NHS gene is the causative mutation in this Nance-Horan Syndrome family. This research broadens the spectrum of NHS gene mutations, contributing to our understanding of the molecular genetics of NHS. Electronic supplementary material The online version of this article (doi:10.1186/s12881-016-0360-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Qi Tian
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Yunping Li
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Rizwana Kousar
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha, Hunan, China.,Department of Biology, Allama Iqbal Open University, Islamabad, Pakistan
| | - Hui Guo
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Fenglan Peng
- ChangSha Health Vocational Collage, Changsha, Hunan, China
| | - Yu Zheng
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Xiaohua Yang
- Shenzhen Baoan District Maternal and Child Health Hospital, Shenzhen, Guangdong, China
| | - Zhigao Long
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Runyi Tian
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Kun Xia
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Haiying Lin
- Shenzhen Baoan District Maternal and Child Health Hospital, Shenzhen, Guangdong, China.
| | - Qian Pan
- State Key Laboratory of Medical Genetics & School of Life Sciences, Central South University, Changsha, Hunan, China.
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Gjørup H, Haubek D, Jacobsen P, Ostergaard JR. Nance-Horan syndrome-The oral perspective on a rare disease. Am J Med Genet A 2016; 173:88-98. [PMID: 27616609 DOI: 10.1002/ajmg.a.37963] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2016] [Accepted: 08/21/2016] [Indexed: 11/11/2022]
Abstract
The present study describes seven patients with Nance-Horan syndrome, all referred to a specialized oral care unit in the Central Denmark Region. A literature search on "Nance Horan Syndrome" resulted in 53 publications among which 29 reported on dental findings. Findings reported in these papers have been systematized to obtain an overview of the reported findings and the terminology on dental morphology. All seven patients included in the present study showed deviations of crown morphology on incisors and/or molars. The only consistent and very clear dental aberration was alterations in the tooth morphology that is screwdriver-shaped incisors and bud molars being most pronounced in the permanent dentition, but were also present in the primary dentition. In addition, three patients had supernumerary teeth, and three had dental agenesis. In conclusion, a dental examination as a part of the diagnostic process may reveal distinct characteristics of the dental morphology, which could be of diagnostic value and facilitate an early diagnosis. In the description of molar morphology in NHS patients, it is recommended to use the term "bud molar." The combination of congenital cataract, screwdriwer-shaped incisors and bud-shaped molars is a strong clinical indication of Nance-Horan syndrome. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Hans Gjørup
- Section of Oral Health in Rare Diseases, Department of Maxillofacial Surgery, Aarhus University Hospital, Aarhus, Denmark
| | - Dorte Haubek
- Section for Pediatric Dentistry, Department of Dentistry, Health, Aarhus University, Aarhus, Denmark
| | - Pernille Jacobsen
- Department of Specialized Oral Health Care, Viborg Regional Hospital, Central Jutland, Viborg, Denmark
| | - John R Ostergaard
- Center for Rare Diseases, Department of Pediatrics, Aarhus University Hospital, Aarhus, Denmark
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Fieremans N, Van Esch H, Holvoet M, Van Goethem G, Devriendt K, Rosello M, Mayo S, Martinez F, Jhangiani S, Muzny DM, Gibbs RA, Lupski JR, Vermeesch JR, Marynen P, Froyen G. Identification of Intellectual Disability Genes in Female Patients with a Skewed X-Inactivation Pattern. Hum Mutat 2016; 37:804-11. [PMID: 27159028 DOI: 10.1002/humu.23012] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Revised: 04/22/2016] [Accepted: 04/26/2016] [Indexed: 12/30/2022]
Abstract
Intellectual disability (ID) is a heterogeneous disorder with an unknown molecular etiology in many cases. Previously, X-linked ID (XLID) studies focused on males because of the hemizygous state of their X chromosome. Carrier females are generally unaffected because of the presence of a second normal allele, or inactivation of the mutant X chromosome in most of their cells (skewing). However, in female ID patients, we hypothesized that the presence of skewing of X-inactivation would be an indicator for an X chromosomal ID cause. We analyzed the X-inactivation patterns of 288 females with ID, and found that 22 (7.6%) had extreme skewing (>90%), which is significantly higher than observed in the general population (3.6%; P = 0.029). Whole-exome sequencing of 19 females with extreme skewing revealed causal variants in six females in the XLID genes DDX3X, NHS, WDR45, MECP2, and SMC1A. Interestingly, variants in genes escaping X-inactivation presumably cause both XLID and skewing of X-inactivation in three of these patients. Moreover, variants likely accounting for skewing only were detected in MED12, HDAC8, and TAF9B. All tested candidate causative variants were de novo events. Hence, extreme skewing is a good indicator for the presence of X-linked variants in female patients.
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Affiliation(s)
- Nathalie Fieremans
- Human Genome Laboratory, Department of Human Genetics, KU Leuven, Belgium.,Human Genome Laboratory, VIB Center for the Biology of Disease, Leuven, Belgium
| | - Hilde Van Esch
- Center for Human Genetics, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Maureen Holvoet
- Center for Human Genetics, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Gert Van Goethem
- Het GielsBos, Gierle, Belgium and Department of Neurology, University Hospital of Antwerp (UZA), Antwerp, Belgium
| | - Koenraad Devriendt
- Center for Human Genetics, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Monica Rosello
- Genetics Unit, Hospital Universitario y Politecnico La Fe, Valencia, Spain
| | - Sonia Mayo
- Genetics Unit, Hospital Universitario y Politecnico La Fe, Valencia, Spain
| | - Francisco Martinez
- Genetics Unit, Hospital Universitario y Politecnico La Fe, Valencia, Spain
| | - Shalini Jhangiani
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, Texas
| | - Donna M Muzny
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, Texas
| | - Richard A Gibbs
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, Texas
| | - James R Lupski
- Human Genome Sequencing Center, Baylor College of Medicine, Houston, Texas.,Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, Texas.,Department of Pediatrics, Baylor College of Medicine, Houston, Texas.,Texas Children's Hospital, Houston, Texas
| | - Joris R Vermeesch
- Center for Human Genetics, University Hospitals Leuven, KU Leuven, Leuven, Belgium
| | - Peter Marynen
- Human Genome Laboratory, Department of Human Genetics, KU Leuven, Belgium
| | - Guy Froyen
- Human Genome Laboratory, Department of Human Genetics, KU Leuven, Belgium
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