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Parmeggiani G, Gualandi F, Limarzi M, Ferlini A, Brotto D, Martini A, Sensi A. A familial case of NOG -related symphalangism spectrum disorder due to a novel NOG variant. Clin Dysmorphol 2022; 31:185-190. [PMID: 36004948 DOI: 10.1097/mcd.0000000000000427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
| | - Francesca Gualandi
- Azienda Ospedaliero-Universitaria di Ferrara, Medical Genetics Unit, Ferrara
| | | | - Alessandra Ferlini
- Azienda Ospedaliero-Universitaria di Ferrara, Medical Genetics Unit, Ferrara
| | - Davide Brotto
- Neurosciences Department, Università di Padova, Otorhinolaryngology Unit, Padova, Italy
| | - Alessandro Martini
- Neurosciences Department, Università di Padova, Otorhinolaryngology Unit, Padova, Italy
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Carlson RJ, Quesnel A, Wells D, Brownstein Z, Gilony D, Gulsuner S, Leppig KA, Avraham KB, King MC, Walsh T, Rubinstein J. Genetic Heterogeneity and Core Clinical Features of NOG-Related-Symphalangism Spectrum Disorder. Otol Neurotol 2021; 42:e1143-e1151. [PMID: 34049328 PMCID: PMC8486042 DOI: 10.1097/mao.0000000000003176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVES To better distinguish NOG-related-symphalangism spectrum disorder (NOG-SSD) from chromosomal 17q22 microdeletion syndromes and to inform surgical considerations in stapes surgery for patients with NOG-SSD. BACKGROUND Mutations in NOG cause a variety of skeletal syndromes that often include conductive hearing loss. Several microdeletions of chromosome 17q22 lead to severe syndromes with clinical characteristics that overlap NOG-SSD. Isolated deletion of NOG has not been described, and therefore the contribution of NOG deletion in these syndromes is unknown. METHODS Two families with autosomal dominant NOG-SSD exhibited stapes ankylosis, facial dysmorphisms, and skeletal and joint anomalies. In each family, NOG was evaluated by genomic sequencing and candidate mutations confirmed as damaging by in vitro assays. Temporal bone histology of a patient with NOG-SSD was compared with temporal bones of 40 patients diagnosed with otosclerosis. RESULTS Family 1 harbors a 555 kb chromosomal deletion encompassing only NOG and ANKFN1. Family 2 harbors a missense mutation in NOG leading to absence of noggin protein. The incus-footplate distance of the temporal bone was significantly longer in a patient with NOG-SSD than in patients with otosclerosis. CONCLUSION The chromosomal microdeletion of family 1 led to a phenotype comparable to that due to a NOG point mutation and much milder than the phenotypes due to other chromosome 17q22 microdeletions. Severe clinical findings in other microdeletion cases are likely due to deletion of genes other than NOG. Based on temporal bone findings, we recommend that surgeons obtain longer stapes prostheses before stapes surgery in individuals with NOG-SSD stapes ankylosis.
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Affiliation(s)
- Ryan J Carlson
- Departments of Genome Sciences and Medicine, University of Washington, Seattle, Washington
| | - Alicia Quesnel
- Department of Otolaryngology, Harvard Medical School, Boston, Massachusetts
- Otopathology Laboratory, Massachusetts Eye and Ear, Boston, Massachusetts
| | - Dawson Wells
- Department of Otolaryngology, Harvard Medical School, Boston, Massachusetts
- Otopathology Laboratory, Massachusetts Eye and Ear, Boston, Massachusetts
| | - Zippora Brownstein
- Department of Human Molecular Genetics and Biochemistry, Faculty of Medicine and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
| | - Dror Gilony
- Department of Human Molecular Genetics and Biochemistry, Faculty of Medicine and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
- Pediatric Otolaryngology Unit, Schneider Children's Medical Center of Israel, Petach Tikva, Israel
| | - Suleyman Gulsuner
- Departments of Genome Sciences and Medicine, University of Washington, Seattle, Washington
| | - Kathleen A Leppig
- Genetic Services, Kaiser Permanente of Washington, Seattle, Washington
| | - Karen B Avraham
- Department of Human Molecular Genetics and Biochemistry, Faculty of Medicine and Sagol School of Neuroscience, Tel Aviv University, Tel Aviv, Israel
| | - Mary-Claire King
- Departments of Genome Sciences and Medicine, University of Washington, Seattle, Washington
| | - Tom Walsh
- Departments of Genome Sciences and Medicine, University of Washington, Seattle, Washington
| | - Jay Rubinstein
- Virginia Merrill Bloedel Hearing Research Center, Department of Otolaryngology-Head and Neck Surgery, University of Washington, Seattle, Washington
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Yu R, Jiang H, Liao H, Luo W. Genetic and clinical phenotypic analysis of familial stapes sclerosis caused by an NOG mutation. BMC Med Genomics 2020; 13:187. [PMID: 33308208 PMCID: PMC7733265 DOI: 10.1186/s12920-020-00843-5] [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: 11/30/2020] [Accepted: 12/01/2020] [Indexed: 11/18/2022] Open
Abstract
Background The noggin protein encoded by the NOG gene can interfere with the binding of bone morphogenetic protein to its receptor, thus affecting bone and joint development. The symptoms include abnormal skeletal development and conductive deafness. Methods In a retrospective study, clinical data of the proband and her family members, including 8 people and 50 healthy normal controls, were collected. Second-generation sequencing was performed on peripheral blood samples from them. Results The sequencing analysis indicated that in the proband, the NOG gene had a c.532T > C, p.C178R (cytosine deletion, NM_005450.6:c.532T > C), leading to an amino acid change. The proband's father, grandmother, second sister, and third sister also had this mutation, whereas family members with normal phenotypes did not have the mutation. Conclusion Analysis of this family showed that the novel presentation of the c.532T > C, p.C178R mutation in the NOG gene resulted in syndrome-type autosomal dominant inheritance reflected in a mild clinical phenotype, which is of great importance for further studies of the clinical phenotype and pathogenesis of stapes sclerosis.
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Affiliation(s)
- Rong Yu
- Department of ENT, First Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi, People's Republic of China
| | - Hongqun Jiang
- Department of ENT, First Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi, People's Republic of China
| | - Huihuang Liao
- Department of ENT, First Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi, People's Republic of China
| | - Wugen Luo
- Department of ENT, First Affiliated Hospital of Nanchang University, Nanchang, 330006, Jiangxi, People's Republic of China.
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Pan Z, Lu W, Li X, Huang S, Dai P, Yuan Y. Multiple synostoses syndrome: Clinical report and retrospective analysis. Am J Med Genet A 2020; 182:1438-1448. [PMID: 32259393 DOI: 10.1002/ajmg.a.61583] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 03/11/2020] [Accepted: 03/15/2020] [Indexed: 11/09/2022]
Abstract
Multiple synostoses syndrome (SYNS1; OMIM# 186500) is a rare autosomal dominant disorder reported in a few cases worldwide. We report a Chinese pedigree characterized by proximal symphalangism, conductive hearing loss, and distinctive facies. We examined the genetic cause and reviewed the literature to discuss the pathogeny, treatment, and prevention of SYNS1. Audiological, ophthalmological, and radiological examinations were evaluated. Whole-exome sequencing (WES) was performed to identify mutations in the proband and her parents. Sanger sequencing was used to verify the results for the proband, parents, and grandmother. The literature on the genotype-phenotype correlation was reviewed. The patient was diagnosed with multiple synostoses syndrome clinically. WES and bioinformatic analysis revealed a novel missense mutation in the NOG gene, c.554C>G (p.Ser185Cys), cosegregated in this family. The literature review showed that the phenotype varies widely, but the typical facies, conductive hearing loss, and proximal symphalangism occurred frequently. All reported mutations are highly conserved in mammals based on conservation analysis, and there are regional hot spots for these mutations. However, no distinct genotype-phenotype correlations have been identified for mutations in NOG in different races. Regular systematic examinations and hearing aids are beneficial for this syndrome. However, the outcomes of otomicrosurgery are not encouraging owing to the regrowth of bone. This study expanded the mutation spectrum of NOG and is the first report of SYNS1 in a Chinese family. Genetic testing is recommended as part of the diagnosis of syndromic deafness. A clinical genetic evaluation is essential to guide prevention, such as preimplantation genetic diagnosis.
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Affiliation(s)
- Zhaoyu Pan
- Department of Otolaryngology, Head and Neck Surgery, Institute of Otolaryngology, Genetic Testing Center for Deafness, Chinese PLA General Hospital, Beijing, China.,National Clinical Research Center for Otolaryngologic Diseases, Beijing, China.,Key Lab of Hearing Impairment Science of Ministry of Education, Beijing, China.,Key Lab of Hearing Impairment Prevention and Treatment of Beijing, Beijing, China.,Department of Otorhinolaryngology, Head and Neck Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Wei Lu
- Department of Otorhinolaryngology, Head and Neck Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Xiaohong Li
- Department of Otolaryngology, Head and Neck Surgery, Institute of Otolaryngology, Genetic Testing Center for Deafness, Chinese PLA General Hospital, Beijing, China.,Department of Otorhinolaryngology, Head and Neck Surgery, Beijing Children's Hospital, Capital Medical University, Beijing, China
| | - Shasha Huang
- Department of Otolaryngology, Head and Neck Surgery, Institute of Otolaryngology, Genetic Testing Center for Deafness, Chinese PLA General Hospital, Beijing, China
| | - Pu Dai
- Department of Otolaryngology, Head and Neck Surgery, Institute of Otolaryngology, Genetic Testing Center for Deafness, Chinese PLA General Hospital, Beijing, China
| | - Yongyi Yuan
- Department of Otolaryngology, Head and Neck Surgery, Institute of Otolaryngology, Genetic Testing Center for Deafness, Chinese PLA General Hospital, Beijing, China
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