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Sonoyama T, Ishino T, Ogawa Y, Oda T, Takeno S. Identification of a novel nonsense NOG mutation in a patient with stapes ankylosis and symphalangism spectrum disorder. Hum Genome Var 2023; 10:12. [PMID: 37045840 PMCID: PMC10097708 DOI: 10.1038/s41439-023-00236-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 02/02/2023] [Accepted: 02/05/2023] [Indexed: 04/14/2023] Open
Abstract
Multiple bone disorders due to mutations in the human noggin (NOG) causes a variety of phenotypes. Hearing impairment due to stapes ankylosis secondary to bony degeneration is also a feature of these syndromes. We describe the case of an individual in a Japanese family with conductive hearing loss due to stapes ankylosis and hyperopia and dactylosymphysis. We revealed a novel NOG mutation, NM_005450.6:c.222 C > A / p.Tyr74*, and confirmed genetic significance.
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Affiliation(s)
- Toru Sonoyama
- Department of Otorhinolaryngology, Head & Neck Surgery, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima City, Hiroshima, 734-8551, Japan.
| | - Takashi Ishino
- Department of Otorhinolaryngology, Head & Neck Surgery, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima City, Hiroshima, 734-8551, Japan
| | - Yui Ogawa
- Department of Otorhinolaryngology, Head & Neck Surgery, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima City, Hiroshima, 734-8551, Japan
| | - Takashi Oda
- Department of Otorhinolaryngology, Head & Neck Surgery, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima City, Hiroshima, 734-8551, Japan
| | - Sachio Takeno
- Department of Otorhinolaryngology, Head & Neck Surgery, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima City, Hiroshima, 734-8551, Japan
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Zhang R, Jia P, Yao Y, Zhu F. Case Report: Identification of a novel CASK missense variant in a Chinese family with MICPCH. Front Genet 2022; 13:933785. [PMID: 36092876 PMCID: PMC9452731 DOI: 10.3389/fgene.2022.933785] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2022] [Accepted: 07/25/2022] [Indexed: 11/13/2022] Open
Abstract
Mental retardation and microcephaly with pontine and cerebellar hypoplasia (MICPCH) is a rare genetic disorder that results in varying levels of pontocerebellar hypoplasia, microcephaly, and severe intellectual disabilities. Prior genetic analyses have identified the CASK gene as a driver of MICPCH. Herein, we analyzed a Chinese family with MICPCH. The index patient was an 8-year-old male. He and his 3-year-old brother suffered from microcephaly, pontocerebellar hypoplasia, serious mental retardation, ataxia, gait disorder, and inability to speak. Through a combination of whole-exome sequencing and subsequent Sanger sequencing, a novel X-linked missense mutation, c.1882G>C (p.D628H) in the CASK gene, was identified in two siblings, as well as their mother and grandmother, who exhibited mild mental retardation. Other family members with negative genetic testing were normal. In silico analyses indicated that this missense mutation was predicted to reduce CASK protein stability, disrupt the SRC homology 3 (SH3) domain, and abolish its function. In summary, we identified a novel missense variate in CASK associated with MICPCH. Our work facilitates the diagnosis of the disease in this family and broadens the gene variant spectrum of the CASK in MICPCH patients.
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Affiliation(s)
- Runfeng Zhang
- College of Life Sciences, Hubei Normal University, Huangshi, China
| | - Peng Jia
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Yanyi Yao
- Medical Genetic Center, Maternal and Child Health Hospital of Hubei Province, Wuhan, China
- *Correspondence: Feng Zhu, ; Yanyi Yao,
| | - Feng Zhu
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Clinic Center of Human Gene Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- *Correspondence: Feng Zhu, ; Yanyi Yao,
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Chooey J, Trexler C, Becker AM, Hogue JS. Esophageal atresia/tracheoesophageal fistula and proximal symphalangism in a patient with a NOG nonsense mutation. Am J Med Genet A 2021; 188:269-271. [PMID: 34472207 DOI: 10.1002/ajmg.a.62486] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Revised: 07/27/2021] [Accepted: 08/13/2021] [Indexed: 11/07/2022]
Abstract
Esophageal atresia and tracheoesophageal fistula (EA/TEF) are relatively common malformations of the human foregut. The etiology remains incompletely understood with genetic causes identified in a small minority of affected patients. We present the case of a newborn with type C EA/TEF along with proximal symphalangism found to have a de novo NOG nonsense mutation. Patients with chromosome 17q deletions including the NOG gene have previously been reported to have EA/TEF but mutations in the gene have not been identified in patients with this malformation. This case provides evidence that haploinsufficiency for NOG may be the cause for EA/TEF in the 17q deletion syndrome and suggests that the clinical spectrum of NOG-related symphalangism spectrum disorders may include EA/TEF.
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Affiliation(s)
- Jonathan Chooey
- Department of Pediatrics, Madigan Army Medical Center, Tacoma, Washington, USA
| | - Connor Trexler
- Department of Pediatrics, Madigan Army Medical Center, Tacoma, Washington, USA
| | - Amy M Becker
- Department of Pediatrics, Madigan Army Medical Center, Tacoma, Washington, USA
| | - Jacob S Hogue
- Department of Pediatrics, Madigan Army Medical Center, Tacoma, Washington, USA
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Zhu F, Zhang F, Hu L, Liu H, Li Y. Integrated Genome and Transcriptome Sequencing to Solve a Neuromuscular Puzzle: Miyoshi Muscular Dystrophy and Early Onset Primary Dystonia in Siblings of the Same Family. Front Genet 2021; 12:672906. [PMID: 34276779 PMCID: PMC8283672 DOI: 10.3389/fgene.2021.672906] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2021] [Accepted: 04/23/2021] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Neuromuscular disorders (NMD), many of which are hereditary, affect muscular function. Due to advances in high-throughput sequencing technologies, the diagnosis of hereditary NMDs has dramatically improved in recent years. METHODS AND RESULTS In this study, we report an family with two siblings exhibiting two different NMD, Miyoshi muscular dystrophy (MMD) and early onset primary dystonia (EOPD). Whole exome sequencing (WES) identified a novel monoallelic frameshift deletion mutation (dysferlin: c.4404delC/p.I1469Sfs∗17) in the Dysferlin gene in the index patient who suffered from MMD. This deletion was inherited from his unaffected father and was carried by his younger sister with EOPD. However, immunostaining staining revealed an absence of dysferlin expression in the proband's muscle tissue and thus suggested the presence of the second underlying mutant allele in dysferlin. Using integrated RNA sequencing (RNA-seq) and whole genome sequencing (WGS) of muscle tissue, a novel deep intronic mutation in dysferlin (dysferlin: c.5341-415A > G) was discovered in the index patient. This mutation caused aberrant mRNA splicing and inclusion of an additional pseudoexon (PE) which we termed PE48.1. This PE was inherited from his unaffected mother. PE48.1 inclusion altered the Dysferlin sequence, causing premature termination of translation. CONCLUSION Using integrated genome and transcriptome sequencing, we discovered hereditary MMD and EOPD affecting two siblings of same family. Our results added further weight to the combined use of RNA-seq and WGS as an important method for detection of deep intronic gene mutations, and suggest that integrated sequencing assays are an effective strategy for the diagnosis of hereditary NMDs.
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Affiliation(s)
- Feng Zhu
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Clinic Center of Human Gene Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Fengxiao Zhang
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Clinic Center of Human Gene Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Lizhi Hu
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
- Clinic Center of Human Gene Research, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Haowen Liu
- Department of Neurology, The Third Hospital of Hebei Medical University, Shijiazhuang, China
| | - Yahua Li
- Department of Respiratory Medicine, The Third Hospital of Hebei Medical University, Shijiazhuang, China
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Sun H, Qiao Y, Chen N, Yang H, Gao Z, Shang Y. Delayed-Onset NOG Gene-Related Syndromic Conductive Deafness: A Case Report. EAR, NOSE & THROAT JOURNAL 2020; 100:333S-336S. [PMID: 32791904 DOI: 10.1177/0145561320944639] [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: 11/17/2022] Open
Abstract
We report a 6-year-old girl with progressive bilateral conductive hearing loss for 2 years. She passed the newborn hearing screening conducted with otoacoustic emissions testing and had a normal development of speech and language, which indicated that her deafness was delayed-onset. She also had congenital proximal interphalangeal joints. Proximal symphalangism was confirmed by genetic testing (NOG gene: c.406C > T, p.R136C). Bilateral stapes ankyloses were proved by surgery and her hearing was improved after stapedotomy by over 30 dB. Besides, this case should remind clinicians to carefully distinguish NOG gene-related deafness from congenital ossicular malformation and pediatric otosclerosis.
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Affiliation(s)
- Huiying Sun
- Department of Otorhinolaryngology, Peking Union Medical College Hospital, 12381Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yufei Qiao
- Department of Otorhinolaryngology, Peking Union Medical College Hospital, 12381Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Na Chen
- Department of Otorhinolaryngology, Peking Union Medical College Hospital, 12381Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.,Department of Otorhinolaryngology, Beijing Rehabilitation Hospital of Capital Medical University, Beijing, China
| | - Hua Yang
- Department of Otorhinolaryngology, Peking Union Medical College Hospital, 12381Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zhiqiang Gao
- Department of Otorhinolaryngology, Peking Union Medical College Hospital, 12381Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yingying Shang
- Department of Otorhinolaryngology, Peking Union Medical College Hospital, 12381Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
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Identification of an unknown frameshift variant of NOG in a Han Chinese family with proximal symphalangism. Biosci Rep 2020; 40:225101. [PMID: 32478388 PMCID: PMC7295635 DOI: 10.1042/bsr20200509] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Revised: 05/24/2020] [Accepted: 05/27/2020] [Indexed: 12/15/2022] Open
Abstract
Proximal symphalangism (SYM1) is an autosomal dominant disorder manifested by ankylosis of the proximal interphalangeal joints of fingers, carpal and tarsal bone fusion, and conductive hearing loss in some cases. Herein, we clinically diagnosed a Chinese patient with fusions of the bilateral proximal interphalangeal joints in the 2–5 digits without conductive hearing loss. Family history investigation revealed that his mother and grandfather also suffered from SYM1. Whole exome sequencing was performed to detect the genetic lesion of the family. The candidate gene variants were validated by Sanger sequencing. By data filtering, co-segregation analysis and bioinformatics analysis, we highly suspected that an unknown heterozygous frameshift variant (c.635_636insG, p.Q213Pfs*57) in NOG was responsible for the SYM1 in the family. This variant was predicted to be deleterious and resulted in a prolonged protein. This finding broadened the spectrum of NOG mutations associated with SYM1 and contributed to genetic diagnosis and counseling of families with SYM1.
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Sha Y, Ma D, Zhang N, Wei X, Liu W, Wang X. Novel NOG (p.P42S) mutation causes proximal symphalangism in a four-generation Chinese family. BMC MEDICAL GENETICS 2019; 20:133. [PMID: 31370824 PMCID: PMC6670124 DOI: 10.1186/s12881-019-0864-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Accepted: 07/23/2019] [Indexed: 12/31/2022]
Abstract
Background Proximal symphalangism (SYM1; OMIM 185800), also called Cushing’s symphalangism, is an infrequent autosomal dominant disease. An SYM1 patient typically features variable fusion of proximal interphalangeal joints in the hands and feet. Methods We recruited a four-generation Chinese non-consanguineous family with SYM1. We examined their hands and feet using X-rays to confirm fusion of proximal interphalangeal joints. We evaluated their audiology using standard audiometric procedures and equipment. Then, we identified genetic variants using whole exome sequencing and validated mutations using Sanger sequencing. Mutation pathogenicity was analyzed with bioinformatics. Results Radiographs revealed proximal-joint fusion of fingers and toes in the patients. Two elderly individuals (II:1 and II:4) exhibited slight hearing loss. Additionally, we detected a novel heterozygous missense mutation in exon 1 of NOG (NM_005450) c.124C > T, p.(Pro42Ser) in all patients. This c.124C > T mutation is highly conserved across multiple species and the p.(Pro42Ser) variation is potentially highly pathogenic. Conclusion Our results suggest that heterozygous c.124C > T, p.(Pro42Ser) in NOG is a novel mutation that causes human SYM1 phenotype. Electronic supplementary material The online version of this article (10.1186/s12881-019-0864-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Yanwei Sha
- Department of Reproductive Medicine, Xiamen Maternity and Child Care Hospital, Xiamen, 361005, Fujian, China
| | - Ding Ma
- Reproductive Medicine Center, Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, 264000, Shandong, China
| | - Ning Zhang
- Reproductive Medicine Center, Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, 264000, Shandong, China
| | - Xiaoli Wei
- School of Pharmaceutical Sciences, Xiamen University, Xiamen, 361005, Fujian, China
| | - Wensheng Liu
- School of Pharmaceutical Sciences, Xiamen University, Xiamen, 361005, Fujian, China.
| | - Xiong Wang
- Reproductive Medicine Center, Affiliated Yantai Yuhuangding Hospital of Qingdao University, Yantai, 264000, Shandong, China.
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