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Fehrmann MLA, Lanting CP, Haer-Wigman L, Mylanus EAM, Huinck WJ, Pennings RJE. Good cochlear implantation outcomes in subjects with mono-allelic WFS1-associated sensorineural hearing loss - a case series. Int J Audiol 2024:1-9. [PMID: 39422244 DOI: 10.1080/14992027.2024.2411579] [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: 05/07/2024] [Revised: 09/23/2024] [Accepted: 09/26/2024] [Indexed: 10/19/2024]
Abstract
OBJECTIVE This study aimed to evaluate long-term cochlear implant (CI) outcomes in individuals with mono-allelic pathogenic variants in WFS1, which is associated with both Wolfram-like syndrome and DFNA6/14/38. DESIGN Retrospective case series. STUDY SAMPLE Seven CI recipients, ranging from eight months to 58 years of age, were included in the study, including four with Wolfram-like syndrome and three with DFNA6/14/38. A total of ten cochlear implantations were performed among these subjects. RESULTS At one-year post-implantation, a mean phoneme score of 90 ± 9% at 65 dB SPL in quiet was found, which remained stable up to ten years post-implantation with a mean phoneme score of 94 ± 6%. Despite these excellent outcomes, one subject achieved no speech recognition with CI and eventually became a non-user. This individual had a prolonged absence of auditory stimulation prior to implantation and encountered multiple challenges during rehabilitation. CONCLUSION Individuals with Wolfram-like syndrome or DFNA6/14/38 demonstrate consistently good outcomes following implantation, which remain stable over time. These findings affirm cochlear implantation as an effective rehabilitation option for these individuals. Furthermore, the stable and good CI outcomes contradict the suggested link between WFS1-associated sensorineural hearing loss and auditory neuropathy.
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Affiliation(s)
- M L A Fehrmann
- Department of Otorhinolaryngology, Radboud University Medical Center, Nijmegen, The Netherlands
- Donders institute for Brain, Cognition and Behaviour, Nijmegen, The Netherlands
| | - C P Lanting
- Department of Otorhinolaryngology, Radboud University Medical Center, Nijmegen, The Netherlands
- Donders institute for Brain, Cognition and Behaviour, Nijmegen, The Netherlands
| | - L Haer-Wigman
- Department of Clinical Genetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - E A M Mylanus
- Department of Otorhinolaryngology, Radboud University Medical Center, Nijmegen, The Netherlands
- Donders institute for Brain, Cognition and Behaviour, Nijmegen, The Netherlands
| | - W J Huinck
- Department of Otorhinolaryngology, Radboud University Medical Center, Nijmegen, The Netherlands
- Donders institute for Brain, Cognition and Behaviour, Nijmegen, The Netherlands
| | - R J E Pennings
- Department of Otorhinolaryngology, Radboud University Medical Center, Nijmegen, The Netherlands
- Donders institute for Brain, Cognition and Behaviour, Nijmegen, The Netherlands
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2
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Chouery E, Mehawej C, Saade R, Barake R, Zarecki P, Gennery C, Corbani S, Korban R, Hamam A, Nasser Eldin J, Yamout M, Banna M, Yamout AKA, Adhami F, Megarbane A, Mustapha M. POLD3 haploinsufficiency is linked to non-syndromic sensorineural adult-onset progressive hearing and balance impairments. Eur J Hum Genet 2024:10.1038/s41431-024-01715-7. [PMID: 39414923 DOI: 10.1038/s41431-024-01715-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 09/27/2024] [Accepted: 10/08/2024] [Indexed: 10/18/2024] Open
Abstract
Hearing impairment (HI) is a significant health concern globally, influenced by genetic and environmental factors. We had identified a homozygous pathogenic variant in POLD3 in a Lebanese patient with an autosomal congenital recessive syndromic hearing loss (MIM#620869). This variant was found at heterozygous state in the parents, who developed progressive hearing impairment around age 40. We conducted a thorough clinical and genetic assessment of sixteen family members, including physical exams, audiometry and vestibular function evaluations. Additionally, gene expression analysis of the Pold3 gene was performed in mice using RNAscope. Twelve individuals were heterozygous for the variant in POLD3, of whom eight showed bilateral adult-onset HI, typically starting around ages 40-50, and two older patients displaying unilateral vestibular weakness. Additionally, two carriers of the variant developed cancer at an early age. RNAscope confirmed Pold3 expression in auditory and vestibular neurons. Exome sequencing analysis excluded the presence of pathogenic variants in any known hearing impairment or cancer predisposition genes. We present herein, for the first time, evidence of a heterozygous pathogenic POLD3 variant associated with a novel form of autosomal dominant progressive adult-onset hearing and vestibular impairments. We also highlight the necessity for further exploration of the role of POLD3 in cancer predisposition.
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Affiliation(s)
- Eliane Chouery
- Department of Human Genetics, Gilbert and Rose-Marie Chagoury School of Medicine, Lebanese American University, Byblos, Lebanon.
| | - Cybel Mehawej
- Department of Human Genetics, Gilbert and Rose-Marie Chagoury School of Medicine, Lebanese American University, Byblos, Lebanon
| | - Rami Saade
- Department of Otolaryngology-Head and Neck Surgery, Lebanese American University, Byblos, Lebanon
| | - Rana Barake
- Department of Otolaryngology-Head and Neck Surgery, Lebanese American University, Byblos, Lebanon
| | - Patryk Zarecki
- School of Biosciences, University of Sheffield, Sheffield, UK
| | | | - Sandra Corbani
- Department of Human Genetics, Gilbert and Rose-Marie Chagoury School of Medicine, Lebanese American University, Byblos, Lebanon
| | - Rima Korban
- Department of Human Genetics, Gilbert and Rose-Marie Chagoury School of Medicine, Lebanese American University, Byblos, Lebanon
| | - Ali Hamam
- Gilbert and Rose-Marie Chagoury School of Medicine, Lebanese American University, Byblos, Lebanon
| | - Jade Nasser Eldin
- Gilbert and Rose-Marie Chagoury School of Medicine, Lebanese American University, Byblos, Lebanon
| | | | | | | | - Fawaz Adhami
- Adhami Advanced Audiology Center, Tripoli, Lebanon
| | - Andre Megarbane
- Department of Human Genetics, Gilbert and Rose-Marie Chagoury School of Medicine, Lebanese American University, Byblos, Lebanon.
- Institut Jérôme Lejeune, Paris, France.
| | - Mirna Mustapha
- School of Biosciences, University of Sheffield, Sheffield, UK
- Neuroscience Institute, University of Sheffield, Sheffield, UK
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3
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Xue J, Xie L, Zheng Q, Xiong F, Wu X, Fan J, Zhang Y, Wang D, Zhang Q, Wang Q. Identification of a novel EYA4 likely pathogenic variant in a Chinese family with postlingual non-syndromic hearing loss and analysis of molecular epidemiology of EYA4 variants. BMC Med Genomics 2024; 17:242. [PMID: 39358765 PMCID: PMC11447973 DOI: 10.1186/s12920-024-02010-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2024] [Accepted: 09/12/2024] [Indexed: 10/04/2024] Open
Abstract
BACKGROUND EYA4 variants are responsible for DFNA10 deafness. Due to its insidious onset and slow progression, hearing loss in autosomal dominant non-syndromic hearing loss (ADNSHL) is usually challenging to detect early in clinical settings, with limited intervention options. Genetic testing can aid in early detection of hearing loss, enabling timely intervention to reduce disability rates and improve the quality of life. METHODS In this study, we report the case of a Chinese family with postlingual and progressive hearing loss that was passed down for four generations. Whole-exome sequencing (WES) was performed on DNA samples from the proband. Candidate variants identified in the proband and family members were confirmed via Sanger sequencing. In silico prediction tools and co-segregation analyses were used to assess the pathogenicity of identified variants. A literature review of known EYA4 variants was performed, analysing variant frequency, distribution characteristics across different populations, and genotype-phenotype correlations. RESULTS We identified a novel EYA4 variant, c.1745_1748del (p.Glu582ValfsTer6), in a Chinese family with ADNSHL, and co-segregation with the family's phenotype was confirmed. The audiometry showed mid-to-high frequency downsloping hearing loss. To date, 52 pathogenic variants of EYA4 have been reported, with majority identified in Asian populations. Most observed are the missense and frameshift variants. CONCLUSIONS A novel variant of EYA4 was identified in a Chinese family with postlingual hearing loss, contributing to the expanding spectrum of EYA4 variants. The audiological features of EYA4 variants are highly heterogeneous and often challenging to detect early in clinical settings. Our findings highlight the significance of genetic testing in patients presenting with postlingual hearing loss.
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Affiliation(s)
- Junfang Xue
- Department of Otolaryngology-Head and Neck Surgery, Peking University International Hospital, 1 Shengmingyuan Road, Beijing, 100026, China
| | - Linyi Xie
- Department of Otolaryngology-Head and Neck Surgery, First Medical Center of Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, Beijing, 100853, China
| | - Qiuchen Zheng
- Department of Otolaryngology-Head and Neck Surgery, First Medical Center of Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, Beijing, 100853, China
| | - Fen Xiong
- Department of Otolaryngology-Head and Neck Surgery, First Medical Center of Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, Beijing, 100853, China
| | - Xiedong Wu
- Department of Otolaryngology-Head and Neck Surgery, First Medical Center of Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, Beijing, 100853, China
| | - Jialin Fan
- Department of Otolaryngology-Head and Neck Surgery, First Medical Center of Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, Beijing, 100853, China
| | - Yang Zhang
- Department of Otolaryngology-Head and Neck Surgery, First Medical Center of Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, Beijing, 100853, China
| | - Dayong Wang
- Department of Otolaryngology-Head and Neck Surgery, First Medical Center of Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, Beijing, 100853, China
| | - Qiujing Zhang
- Department of Otolaryngology-Head and Neck Surgery, First Medical Center of Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, Beijing, 100853, China.
| | - Qiuju Wang
- Department of Otolaryngology-Head and Neck Surgery, First Medical Center of Chinese PLA General Hospital, Medical School of Chinese PLA, 28 Fuxing Road, Beijing, 100853, China.
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4
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Gombojav B, Erdenechuluun J, Makhbal Z, Danshiitsoodol N, Purevdorj E, Jargalmaa M, Batsaikhan T, Lin PH, Lu YS, Lo MY, Tseng HY, Tsai CY, Wu CC. Genetic Basis of Hearing Loss in Mongolian Patients: A Next-Generation Sequencing Study. Genes (Basel) 2024; 15:1227. [PMID: 39336818 PMCID: PMC11431586 DOI: 10.3390/genes15091227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2024] [Revised: 09/12/2024] [Accepted: 09/18/2024] [Indexed: 09/30/2024] Open
Abstract
BACKGROUND/OBJECTIVE The genetic landscape of sensorineural hearing impairment (SNHI) varies across populations. In Mongolia, previous studies have shown a lower prevalence of GJB2 mutations and a higher frequency of variants in other deafness-related genes. This study aimed to investigate the genetic variants associated with idiopathic SNHI in Mongolian patients. METHODS We utilized the next-generation sequencing for investigating the causative mutations in 99 Mongolian patients with SNHI. RESULTS We identified pathogenic variants in 53 of the 99 SNHI patients (54%), with SLC26A4 being the most frequently mutated gene. The c.919-2A>G variant in SLC26A4 was the most prevalent, accounting for 46.2% of the mutant alleles. In addition, we identified 19 other known and 21 novel mutations in a total of 21 SNHI genes in autosomal recessive or dominant inheritance patterns. CONCLUSIONS Our findings expand the understanding of the genetic landscape of SNHI in Mongolia and highlight the importance of considering population-specific variations in genetic testing and counseling for SNHI.
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Affiliation(s)
- Bayasgalan Gombojav
- Department of Epidemiology and Biostatistics, School of Public Health, Mongolian National University of Medical Sciences, Ulaanbaatar 14210, Mongolia
- Healthy Twin Registry of Mongolia, Ulaanbaatar 14210, Mongolia
| | - Jargalkhuu Erdenechuluun
- Department of Otolaryngology, School of Medicine, Mongolian National University of Medical Sciences, Ulaanbaatar 14170, Mongolia
- The EMJJ Otolaryngology Hospital, Ulaanbaatar 14210, Mongolia
| | - Zaya Makhbal
- The EMJJ Otolaryngology Hospital, Ulaanbaatar 14210, Mongolia
| | - Narandalai Danshiitsoodol
- Healthy Twin Registry of Mongolia, Ulaanbaatar 14210, Mongolia
- Department of Probiotic Science for Preventive Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 7348551, Japan
| | - Erkhembulgan Purevdorj
- Healthy Twin Registry of Mongolia, Ulaanbaatar 14210, Mongolia
- Department of Genetics, School of Biomedicine, Mongolian National University of Medical Sciences, Ulaanbaatar 14210, Mongolia
| | | | - Tserendulam Batsaikhan
- Department of Otolaryngology, School of Medicine, Mongolian National University of Medical Sciences, Ulaanbaatar 14170, Mongolia
- The EMJJ Otolaryngology Hospital, Ulaanbaatar 14210, Mongolia
| | - Pei-Hsuan Lin
- Department of Otolaryngology, National Taiwan University Hospital, Taipei 100225, Taiwan
| | - Yue-Sheng Lu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei 100225, Taiwan
| | - Ming-Yu Lo
- Department of Otolaryngology, National Taiwan University Hospital, Taipei 100225, Taiwan
| | - Hsin-Yi Tseng
- Department of Otolaryngology, National Taiwan University Hospital, Taipei 100225, Taiwan
| | - Cheng-Yu Tsai
- Department of Otolaryngology, National Taiwan University Hospital, Taipei 100225, Taiwan
| | - Chen-Chi Wu
- Department of Otolaryngology, National Taiwan University Hospital, Taipei 100225, Taiwan
- Department of Medical Research, National Taiwan University Hospital Hsin-Chu Branch, Hsinchu 30261, Taiwan
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5
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Feng H, Huang S, Ma Y, Yang J, Chen Y, Wang G, Han M, Kang D, Zhang X, Dai P, Yuan Y. Genomic and phenotypic landscapes of X-linked hereditary hearing loss in the Chinese population. Orphanet J Rare Dis 2024; 19:342. [PMID: 39272213 PMCID: PMC11396341 DOI: 10.1186/s13023-024-03338-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 08/21/2024] [Indexed: 09/15/2024] Open
Abstract
BACKGROUND Hearing loss (HL) is the most common sensory birth deficit worldwide, with causative variants in more than 150 genes. However, the etiological contribution and clinical manifestations of X-linked inheritance in HL remain unclear within the Chinese HL population. In this study, we focused on X-linked hereditary HL and aimed to assess its contribution to hereditary HL and identify the genotype-phenotype relationship. METHODS We performed a molecular epidemiological investigation of X-linked hereditary HL based on next-generation sequencing and third-generation sequencing in 3646 unrelated patients with HL. We also discussed the clinical features associated with X-linked non-syndromic HL-related genes based on a review of the literature. RESULTS We obtained a diagnostic rate of 52.72% (1922/3646) among our patients; the aggregate contribution of HL caused by genes on the X chromosome in this cohort was ~ 1.14% (22/1922), and POU3F4 variants caused ~ 59% (13/22) of these cases. We found that X-linked HL was congenital or began during childhood in all cases, with representative audiological profiles or typical cochlear malformations in certain genes. Genotypic and phenotypic analyses showed that causative variants in PRPS1 and AIFM1 were mainly of the missense type, suggesting that phenotypic variability was correlated with the different effects that the replaced residues exert on structure and function. Variations in SMPX causing truncation of the protein product were associated with DFNX4, which resulted in typical audiological profiles before and after the age of 10 years, whereas nontruncated proteins typically led to distal myopathy. No phenotypic differences were identified in patients carrying POU3F4 or COL4A6 variants. CONCLUSIONS Our work constitutes a preliminary evaluation of the molecular contribution of X-linked genes in heritable HL (~ 1.14%). The 15 novel variants reported here expand the mutational spectrum of these genes. Analysis of the genotype-phenotype relationship is valuable for X-linked HL precise diagnostics and genetic counseling. Elucidation of the pathogenic mechanisms and audiological profiles of HL can also guide choices regarding treatment modalities.
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Affiliation(s)
- Haifeng Feng
- Senior Department of Otolaryngology Head and Neck Surgery, the 6th Medical Center of Chinese PLA General Hospital, Chinese PLA Medical School,, Beijing, 100853, China
- State Key Laboratory of Hearing and Balance Science, Beijing, 100853, China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing, 100853, China
- Key Laboratory of Hearing Science, Ministry of Education, Beijing, 100853, China
- Beijing Key Laboratory of Hearing Impairment Prevention and Treatment, Beijing, 100853, China
- Chinese PLA Medical School, Beijing, 100853, China
| | - Shasha Huang
- Senior Department of Otolaryngology Head and Neck Surgery, the 6th Medical Center of Chinese PLA General Hospital, Chinese PLA Medical School,, Beijing, 100853, China
- State Key Laboratory of Hearing and Balance Science, Beijing, 100853, China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing, 100853, China
- Key Laboratory of Hearing Science, Ministry of Education, Beijing, 100853, China
- Beijing Key Laboratory of Hearing Impairment Prevention and Treatment, Beijing, 100853, China
| | - Ying Ma
- Senior Department of Otolaryngology Head and Neck Surgery, the 6th Medical Center of Chinese PLA General Hospital, Chinese PLA Medical School,, Beijing, 100853, China
- State Key Laboratory of Hearing and Balance Science, Beijing, 100853, China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing, 100853, China
- Key Laboratory of Hearing Science, Ministry of Education, Beijing, 100853, China
- Beijing Key Laboratory of Hearing Impairment Prevention and Treatment, Beijing, 100853, China
| | - Jinyuan Yang
- Senior Department of Otolaryngology Head and Neck Surgery, the 6th Medical Center of Chinese PLA General Hospital, Chinese PLA Medical School,, Beijing, 100853, China
- State Key Laboratory of Hearing and Balance Science, Beijing, 100853, China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing, 100853, China
- Key Laboratory of Hearing Science, Ministry of Education, Beijing, 100853, China
- Beijing Key Laboratory of Hearing Impairment Prevention and Treatment, Beijing, 100853, China
| | - Yijin Chen
- Senior Department of Otolaryngology Head and Neck Surgery, the 6th Medical Center of Chinese PLA General Hospital, Chinese PLA Medical School,, Beijing, 100853, China
- State Key Laboratory of Hearing and Balance Science, Beijing, 100853, China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing, 100853, China
- Key Laboratory of Hearing Science, Ministry of Education, Beijing, 100853, China
- Beijing Key Laboratory of Hearing Impairment Prevention and Treatment, Beijing, 100853, China
| | - Guojian Wang
- Senior Department of Otolaryngology Head and Neck Surgery, the 6th Medical Center of Chinese PLA General Hospital, Chinese PLA Medical School,, Beijing, 100853, China
- State Key Laboratory of Hearing and Balance Science, Beijing, 100853, China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing, 100853, China
- Key Laboratory of Hearing Science, Ministry of Education, Beijing, 100853, China
- Beijing Key Laboratory of Hearing Impairment Prevention and Treatment, Beijing, 100853, China
| | - Mingyu Han
- Senior Department of Otolaryngology Head and Neck Surgery, the 6th Medical Center of Chinese PLA General Hospital, Chinese PLA Medical School,, Beijing, 100853, China
- State Key Laboratory of Hearing and Balance Science, Beijing, 100853, China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing, 100853, China
- Key Laboratory of Hearing Science, Ministry of Education, Beijing, 100853, China
- Beijing Key Laboratory of Hearing Impairment Prevention and Treatment, Beijing, 100853, China
| | - Dongyang Kang
- Senior Department of Otolaryngology Head and Neck Surgery, the 6th Medical Center of Chinese PLA General Hospital, Chinese PLA Medical School,, Beijing, 100853, China
- State Key Laboratory of Hearing and Balance Science, Beijing, 100853, China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing, 100853, China
- Key Laboratory of Hearing Science, Ministry of Education, Beijing, 100853, China
- Beijing Key Laboratory of Hearing Impairment Prevention and Treatment, Beijing, 100853, China
| | - Xin Zhang
- Senior Department of Otolaryngology Head and Neck Surgery, the 6th Medical Center of Chinese PLA General Hospital, Chinese PLA Medical School,, Beijing, 100853, China
- State Key Laboratory of Hearing and Balance Science, Beijing, 100853, China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing, 100853, China
- Key Laboratory of Hearing Science, Ministry of Education, Beijing, 100853, China
- Beijing Key Laboratory of Hearing Impairment Prevention and Treatment, Beijing, 100853, China
| | - Pu Dai
- Senior Department of Otolaryngology Head and Neck Surgery, the 6th Medical Center of Chinese PLA General Hospital, Chinese PLA Medical School,, Beijing, 100853, China.
- State Key Laboratory of Hearing and Balance Science, Beijing, 100853, China.
- National Clinical Research Center for Otolaryngologic Diseases, Beijing, 100853, China.
- Key Laboratory of Hearing Science, Ministry of Education, Beijing, 100853, China.
- Beijing Key Laboratory of Hearing Impairment Prevention and Treatment, Beijing, 100853, China.
| | - Yongyi Yuan
- Senior Department of Otolaryngology Head and Neck Surgery, the 6th Medical Center of Chinese PLA General Hospital, Chinese PLA Medical School,, Beijing, 100853, China.
- State Key Laboratory of Hearing and Balance Science, Beijing, 100853, China.
- National Clinical Research Center for Otolaryngologic Diseases, Beijing, 100853, China.
- Key Laboratory of Hearing Science, Ministry of Education, Beijing, 100853, China.
- Beijing Key Laboratory of Hearing Impairment Prevention and Treatment, Beijing, 100853, China.
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Almalki F. Review and research gap identification in genetics causes of syndromic and nonsyndromic hearing loss in Saudi Arabia. Ann Hum Genet 2024; 88:364-381. [PMID: 38517009 DOI: 10.1111/ahg.12559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 02/13/2024] [Accepted: 03/04/2024] [Indexed: 03/23/2024]
Abstract
Congenital hearing loss is one of the most common sensory disabilities worldwide. The genetic causes of hearing loss account for 50% of hearing loss. Genetic causes of hearing loss can be classified as nonsyndromic hearing loss (NSHL) or syndromic hearing loss (SHL). NSHL is defined as a partial or complete hearing loss without additional phenotypes; however, SHL, known as hearing loss, is associated with other phenotypes. Both types follow a simple Mendelian inheritance fashion. Several studies have been conducted to uncover the genetic factors contributing to NSHL and SHL in Saudi patients. However, these studies have encountered certain limitations. This review assesses and discusses the genetic factors underpinning NSHL and SHL globally, with a specific emphasis on the Saudi Arabian context. It also explores the prevalence of the most observed genetic causes of NSHL and SHL in Saudi Arabia. It also sheds light on areas where further research is needed to fully understand the genetic foundations of hearing loss in the Saudi population. This review identifies several gaps in research in NSHL and SHL and provides insights into potential research to be conducted.
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Affiliation(s)
- Faisal Almalki
- Medical Laboratories Technology Department, College of Applied Medical Sciences, Taibah University, Al Madinah Al Munwarah, Saudi Arabia
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7
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Konopka AK, Kasprzyk A, Pyttel J, Chmielik LP, Niedzielski A. Etiology, Diagnostic, and Rehabilitative Methods for Children with Central Auditory Processing Disorders-A Scoping Review. Audiol Res 2024; 14:736-746. [PMID: 39194418 DOI: 10.3390/audiolres14040062] [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: 07/13/2024] [Revised: 08/16/2024] [Accepted: 08/19/2024] [Indexed: 08/29/2024] Open
Abstract
APD (auditory processing disorders) is defined as difficulties in processing auditory stimuli within the central nervous system, with normative physical hearing and intellectual disabilities excluded. The scale of this phenomenon among children and adolescents and the need to raise awareness of its occurrence prompted the authors to review currently available diagnostic and therapeutic methods, as well as outline future directions for addressing children affected by APD.
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Affiliation(s)
| | - Anna Kasprzyk
- Department of Pediatric Otolaryngology, Centre of Postgraduate Medical Education, 01-813 Warsaw, Poland
- Department of Pediatric ENT, The Children's Hospital in Dziekanow Lesny, 05-092 Dziekanow Lesny, Poland
| | | | - Lechosław Paweł Chmielik
- Department of Pediatric Otolaryngology, Centre of Postgraduate Medical Education, 01-813 Warsaw, Poland
- Department of Pediatric ENT, The Children's Hospital in Dziekanow Lesny, 05-092 Dziekanow Lesny, Poland
| | - Artur Niedzielski
- Department of Pediatric Otolaryngology, Centre of Postgraduate Medical Education, 01-813 Warsaw, Poland
- Department of Pediatric ENT, The Children's Hospital in Dziekanow Lesny, 05-092 Dziekanow Lesny, Poland
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8
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Lee NK, Uhler KM, Yoon PJ, Santos-Cortez RLP. Clinical Genetic Testing for Hearing Loss: Implications for Genetic Counseling and Gene-Based Therapies. Biomedicines 2024; 12:1427. [PMID: 39062005 PMCID: PMC11274279 DOI: 10.3390/biomedicines12071427] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 06/13/2024] [Accepted: 06/13/2024] [Indexed: 07/28/2024] Open
Abstract
Genetic factors contribute significantly to congenital hearing loss, with non-syndromic cases being more prevalent and genetically heterogeneous. Currently, 150 genes have been associated with non-syndromic hearing loss, and their identification has improved our understanding of auditory physiology and potential therapeutic targets. Hearing loss gene panels offer comprehensive genetic testing for hereditary hearing loss, and advancements in sequencing technology have made genetic testing more accessible and affordable. Currently, genetic panel tests available at a relatively lower cost are offered to patients who face financial barriers. In this study, clinical and audiometric data were collected from six pediatric patients who underwent genetic panel testing. Known pathogenic variants in MYO15A, GJB2, and USH2A were most likely to be causal of hearing loss. Novel pathogenic variants in the MYO7A and TECTA genes were also identified. Variable hearing phenotypes and inheritance patterns were observed amongst individuals with different pathogenic variants. The identification of these variants contributes to the continually expanding knowledge base on genetic hearing loss and lays the groundwork for personalized treatment options in the future.
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Affiliation(s)
- Nam K. Lee
- Department of Otolaryngology—Head and Neck Surgery, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
| | - Kristin M. Uhler
- Department of Physical Medicine and Rehabilitation, Children’s Hospital Colorado, Anschutz Medical Campus, University of Colorado, Aurora, CO 80045, USA
- Department of Pediatric Otolaryngology, Children’s Hospital Colorado, Aurora, CO 80045, USA
| | - Patricia J. Yoon
- Department of Otolaryngology—Head and Neck Surgery, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
- Department of Pediatric Otolaryngology, Children’s Hospital Colorado, Aurora, CO 80045, USA
| | - Regie Lyn P. Santos-Cortez
- Department of Otolaryngology—Head and Neck Surgery, School of Medicine, University of Colorado Anschutz Medical Campus, Aurora, CO 80045, USA
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9
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Chen HK, Hsieh YW, Hsu HY, Liu TY, Zhang YT, Lin CD, Tsai FJ. Increased risk of hearing loss associated with MT-RNR1 gene mutations: a real-world investigation among Han Taiwanese Population. BMC Med Genomics 2024; 17:155. [PMID: 38840095 PMCID: PMC11155076 DOI: 10.1186/s12920-024-01921-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2024] [Accepted: 05/23/2024] [Indexed: 06/07/2024] Open
Abstract
BACKGROUND Previous studies have implicated inherited mutations in mitochondrial DNA (mtDNA) in sensorineural hearing loss (SNHL). However, the definitive association between mitochondrial 12S rRNA (MT-RNR1) variants and hearing loss in the population has not been well established, particularly in Asia. The objective of this retrospective cohort study was to assess the association between MT-RNR1 variants and the risk of SNHL in patients in Taiwan. METHODS The cohort included 306,068 participants from Taiwan between January 2003 and December 2020. Participants were classified based on genetic variants, particularly mitochondrial mutations (rs267606618, rs267606619, rs267606617). MT-RNR1 variant cases were matched 1:10 with non-mutant patients by age, gender, and visit year, excluding those with pre-existing hearing loss. The primary endpoint was SNHL, identified using specific ICD-TM codes with a 90% positive predictive value. Medication exposure history was determined via self-report or electronic medical records in the hospital. Cox proportional hazard regression models were used to assess the association between MT-RNR1 variants and hearing loss, adjusting for various covariates. Kaplan-Meier survival curves and log-rank tests compared hearing loss incidence between groups. RESULTS The mean age of the mtDNA variants group is 32.4 years, with a standard deviation of 19.2 years. The incidence density of hearing loss for the mutation group was 36.42 per 10,000 person-years (95% Confidence Interval [CI], 27.21-47.73), which was higher than the 23.77per 10,000 person-years (95% CI, 21.32-26.42) in the wild-type group (p = 0.0036). Additionally, diabetes mellitus was associated with an increased risk of developing SNHL in individuals with MT-RNR1 variants (adjusted hazard ratio = 1.76 [95% CI, 1.00-3.09], p < 0.05). CONCLUSION This study highlights the increased risk of hearing loss in patients carrying MT-RNR1 variants, particularly those with diabetes mellitus. Future research that integrates genetic and clinical data is crucial for developing more precise interventions to monitor and treat hearing loss in this vulnerable population.
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Affiliation(s)
- Hou-Kuang Chen
- Department of Otorhinolaryngology-Head and Neck Surgery, China Medical University Hospital, Taichung, Taiwan
| | - Yow-Wen Hsieh
- Department of Pharmacy, China Medical University Hospital, Taichung, Taiwan
- School of Pharmacy, College of Pharmacy, China Medical University, Taichung, Taiwan
| | - Hsing-Yu Hsu
- Department of Pharmacy, China Medical University Hospital, Taichung, Taiwan
- Graduate Institute of Clinical Pharmacy, College of Medicine, National Taiwan University, Taipei, Taiwan
| | - Ting-Yuan Liu
- Million-person precision medicine initiative, Department of Medical Research, China Medical University Hospital, Taichung, Taiwan
| | - Yu-Ting Zhang
- Department of Pharmacy, China Medical University Hospital, Taichung, Taiwan
| | - Chia-Der Lin
- Department of Otorhinolaryngology-Head and Neck Surgery, China Medical University Hospital, Taichung, Taiwan.
| | - Fuu-Jen Tsai
- Department of Medical Research, China Medical University Hospital, Taichung, Taiwan.
- School of Chinese Medicine, College of Chinese Medicine, China Medical University, Taichung, Taiwan.
- Division of Pediatric Genetics, Children's Hospital of China Medical University, Taichung, Taiwan.
- Department of Biotechnology and Bioinformatics, Asia University, Taichung, Taiwan.
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10
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Duman D, Ramzan M, Subasioglu A, Mutlu A, Peart L, Seyhan S, Guo S, Ila K, Balta B, Kalcioglu MT, Bademci G, Tekin M. Identification of novel MYH14 variants in families with autosomal dominant sensorineural hearing loss. Am J Med Genet A 2024; 194:e63563. [PMID: 38352997 PMCID: PMC11060900 DOI: 10.1002/ajmg.a.63563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 01/18/2024] [Accepted: 01/27/2024] [Indexed: 05/02/2024]
Abstract
Autosomal dominant sensorineural hearing loss (ADSNHL) is a genetically heterogeneous disorder caused by pathogenic variants in various genes, including MYH14. However, the interpretation of pathogenicity for MYH14 variants remains a challenge due to incomplete penetrance and the lack of functional studies and large families. In this study, we performed exome sequencing in six unrelated families with ADSNHL and identified five MYH14 variants, including three novel variants. Two of the novel variants, c.571G > C (p.Asp191His) and c.571G > A (p.Asp191Asn), were classified as likely pathogenic using ACMG and Hearing Loss Expert panel guidelines. In silico modeling demonstrated that these variants, along with p.Gly1794Arg, can alter protein stability and interactions among neighboring molecules. Our findings suggest that MYH14 causative variants may be more contributory and emphasize the importance of considering this gene in patients with nonsyndromic mainly post-lingual severe form of hearing loss. However, further functional studies are needed to confirm the pathogenicity of these variants.
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Affiliation(s)
- Duygu Duman
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, 33136, USA
- Department of Audiology, Faculty of Health Sciences, Ankara University, Ankara 06100, Turkiye
| | - Memoona Ramzan
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, 33136, USA
| | - Asli Subasioglu
- Department of Medical Genetics, İzmir Katip Çelebi University, Ataturk Education and Research Hospital, 35360, Turkiye
| | - Ahmet Mutlu
- Istanbul Medeniyet University, Faculty of Medicine, Department of Otorhinolaryngology, Istanbul 34720, Turkiye
- Otorhinolaryngology Clinic of Goztepe Prof.Dr. Suleyman Yalcin City Hospital, Istanbul, 34722 Turkiye
| | - LéShon Peart
- Dr. John T. Macdonald Department of Human Genetics, University of Miami Miller School of Medicine, Miami. FL, 33136, USA
| | - Serhat Seyhan
- Memorial Şişli Hospital, Laboratory of Genetics, Istanbul 34385, Turkiye
| | - Shengru Guo
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, 33136, USA
| | - Kadri Ila
- Department of Otorhinolaryngology, Umraniye Education and Research Hospital, Istanbul, 34760 Turkiye
| | - Burhan Balta
- Department of Medical Genetics, Kayseri Training and Research Hospital, Kayseri, Turkey
| | - Mahmut Tayyar Kalcioglu
- Istanbul Medeniyet University, Faculty of Medicine, Department of Otorhinolaryngology, Istanbul 34720, Turkiye
- Otorhinolaryngology Clinic of Goztepe Prof.Dr. Suleyman Yalcin City Hospital, Istanbul, 34722 Turkiye
| | - Guney Bademci
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, 33136, USA
- Dr. John T. Macdonald Department of Human Genetics, University of Miami Miller School of Medicine, Miami. FL, 33136, USA
| | - Mustafa Tekin
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, 33136, USA
- Dr. John T. Macdonald Department of Human Genetics, University of Miami Miller School of Medicine, Miami. FL, 33136, USA
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11
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Clarke S, Da Costa S, Crottaz-Herbette S. Dual Representation of the Auditory Space. Brain Sci 2024; 14:535. [PMID: 38928534 PMCID: PMC11201621 DOI: 10.3390/brainsci14060535] [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: 04/24/2024] [Revised: 05/19/2024] [Accepted: 05/21/2024] [Indexed: 06/28/2024] Open
Abstract
Auditory spatial cues contribute to two distinct functions, of which one leads to explicit localization of sound sources and the other provides a location-linked representation of sound objects. Behavioral and imaging studies demonstrated right-hemispheric dominance for explicit sound localization. An early clinical case study documented the dissociation between the explicit sound localizations, which was heavily impaired, and fully preserved use of spatial cues for sound object segregation. The latter involves location-linked encoding of sound objects. We review here evidence pertaining to brain regions involved in location-linked representation of sound objects. Auditory evoked potential (AEP) and functional magnetic resonance imaging (fMRI) studies investigated this aspect by comparing encoding of individual sound objects, which changed their locations or remained stationary. Systematic search identified 1 AEP and 12 fMRI studies. Together with studies of anatomical correlates of impaired of spatial-cue-based sound object segregation after focal brain lesions, the present evidence indicates that the location-linked representation of sound objects involves strongly the left hemisphere and to a lesser degree the right hemisphere. Location-linked encoding of sound objects is present in several early-stage auditory areas and in the specialized temporal voice area. In these regions, emotional valence benefits from location-linked encoding as well.
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Affiliation(s)
- Stephanie Clarke
- Neuropsychology and Neurorehabilitation Service, Centre Hospitalier Universitaire Vaudois (CHUV), University of Lausanne, Av. Pierre-Decker 5, 1011 Lausanne, Switzerland; (S.D.C.); (S.C.-H.)
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12
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Rezaie N, Mansour Samaei N, Oladnabi M. Identification of novel and known genetic variants associated with hereditary hearing loss in iranian families using whole exome sequencing. Mol Biol Rep 2024; 51:662. [PMID: 38767670 DOI: 10.1007/s11033-024-09565-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2024] [Accepted: 04/17/2024] [Indexed: 05/22/2024]
Abstract
BACKGROUND Hearing loss (HL) is a common sensory impairment worldwide, with genetic and environmental factors contributing to its occurrence. Next Generation Sequencing (NGS) plays a crucial role in identifying the genetic factors involved in this heterogeneous disorder. METHODS AND RESULTS In this study, a total of 9 unrelated Iranian families, each having at least one affected individual who tested negative for mutations in GJB2, underwent screening using whole exome sequencing (WES). The pathogenicity and novelty of the identified variant was checked using various databases. Co-segregation study was also performed to confirm the presence of the candidate variants in parents. Plus, The pathogenicity of the detected variant was assessed through in silico analysis using a number of mutation prediction software tools. Among the 9 investigated families, hearing loss-causing genes were identified in 6 families. the mutations were observed in USH2A, CLRN1, BSND, SLC26A4, and MITF, with two of the identified mutations being novel. CONCLUSION Discovering additional variants and broadening the range of mutations associated with hearing impairment has the potential to enhance the diagnostic effectiveness of molecular testing in patient screening, and can also lead to improved counseling aimed at reducing the risk of affected offspring for high-risk couples.
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Affiliation(s)
- Nahid Rezaie
- Gorgan Congenital Malformations Research Center, Golestan University of Medical Sciences, Gorgan, Iran
- Department of Medical Genetics, School of Advanced Technologies in Medicine, Golestan University of Medical Sciences, Gorgan, Iran
- Student Research Committee, Golestan University of Medical Sciences, Gorgan, Iran
| | - Nader Mansour Samaei
- Gorgan Congenital Malformations Research Center, Golestan University of Medical Sciences, Gorgan, Iran.
- Department of Medical Genetics, School of Advanced Technologies in Medicine, Golestan University of Medical Sciences, Gorgan, Iran.
- Department of Cytogenetics, Genome Genetics Laboratory, Gorgan, Golestan, Iran.
| | - Morteza Oladnabi
- Gorgan Congenital Malformations Research Center, Golestan University of Medical Sciences, Gorgan, Iran.
- Department of Medical Genetics, School of Advanced Technologies in Medicine, Golestan University of Medical Sciences, Gorgan, Iran.
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13
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Yeo XY, Kwon S, Rinai KR, Lee S, Jung S, Park R. A Consolidated Understanding of the Contribution of Redox Dysregulation in the Development of Hearing Impairment. Antioxidants (Basel) 2024; 13:598. [PMID: 38790703 PMCID: PMC11118506 DOI: 10.3390/antiox13050598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Revised: 04/26/2024] [Accepted: 05/09/2024] [Indexed: 05/26/2024] Open
Abstract
The etiology of hearing impairment is multifactorial, with contributions from both genetic and environmental factors. Although genetic studies have yielded valuable insights into the development and function of the auditory system, the contribution of gene products and their interaction with alternate environmental factors for the maintenance and development of auditory function requires further elaboration. In this review, we provide an overview of the current knowledge on the role of redox dysregulation as the converging factor between genetic and environmental factor-dependent development of hearing loss, with a focus on understanding the interaction of oxidative stress with the physical components of the peripheral auditory system in auditory disfunction. The potential involvement of molecular factors linked to auditory function in driving redox imbalance is an important promoter of the development of hearing loss over time.
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Affiliation(s)
- Xin Yi Yeo
- Department of Psychological Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 119228, Singapore;
- Department of Medical Science, College of Medicine, CHA University, Seongnam 13488, Republic of Korea;
| | - Soohyun Kwon
- Department of Medical Science, College of Medicine, CHA University, Seongnam 13488, Republic of Korea;
- Department of BioNanotechnology, Gachon University, Seongnam 13120, Republic of Korea
| | - Kimberley R. Rinai
- Department of Life Science, College of Medicine, CHA University, Seongnam 13488, Republic of Korea;
| | - Sungsu Lee
- Department of Otolaryngology-Head and Neck Surgery, Chonnam National University Hospital and Medical School, Gwangju 61469, Republic of Korea;
| | - Sangyong Jung
- Department of Medical Science, College of Medicine, CHA University, Seongnam 13488, Republic of Korea;
| | - Raekil Park
- Department of Biomedical Science and Engineering, Gwangju Institute of Science & Technology (GIST), Gwangju 61005, Republic of Korea
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14
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Alasmari BG, Alpakra M, Hassanien SS, Elmugadam AA, Elzubair L, Suliman EA, Alghubishi SA. A Novel Variant in the DIAPH1 Gene Causing Macrothrombocytopenia and Non-syndromic Hearing Loss in a Pediatric Saudi Girl. Cureus 2024; 16:e61044. [PMID: 38915998 PMCID: PMC11195521 DOI: 10.7759/cureus.61044] [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] [Accepted: 05/25/2024] [Indexed: 06/26/2024] Open
Abstract
Macrothrompocytopenia (MTP) is a rare group of hereditary disorders that lead to impaired hemostasis. Macrothrompocytopenia mostly results from genetic mutations in genes implicated in megakaryocyte differentiation and function. Diaphanous-related formin 1 (DIAPH1) is a protein-coding gene. Dominant gain-of-function DIAPH1 variants cause macrothrombocytopenia and sensorineural deafness (autosomal dominant non-syndromic hearing loss 1 (DFNA1)), while homozygous loss of DIAPH1 results in seizures, cortical blindness, and microcephaly syndrome (SCBMS). This rare genetic disease is characterized by progressive and severe hearing loss with onset in the first decade of life, is associated with mild thrombocytopenia, and has no significant bleeding tendency. This case report presents the clinical findings of a 14-year-old Saudi pediatric girl. We investigated the potential association of DIAPH1 as a novel candidate gene linked to dominant MTP and autosomal dominant non-syndromic hearing loss (ADNSHL), which was evaluated through audiometry. Notably, a novel variant, c.3633_3636del, was identified in the DIAPH1 gene. To date, only a small number of mutations in this gene have been reported as the cause of MTP and ADNSHL.
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Affiliation(s)
- Badriah G Alasmari
- Pediatric Hematology and Oncology, Armed Forces Hospitals Southern Region, Khamis Mushayt, SAU
| | - Mohammed Alpakra
- Pediatric Hematology and Oncology, Armed Forces Hospitals Southern Region, Khamis Mushayt, SAU
| | - Sara S Hassanien
- Pediatric Hematology and Oncology, Armed Forces Hospitals Southern Region, Khamis Mushait, SAU
| | - Abdelhakam A Elmugadam
- Pediatric Hematology and Oncology, Armed Forces Hospitals Southern Region, Khamis Mushayt, SAU
| | - Lina Elzubair
- Hematopathology, Armed Forces Hospitals Southern Region, Khamis Mushayt, SAU
| | - Enaam A Suliman
- Hematopathology, Armed Forces Hospitals Southern Region, Khamis Mushayt, SAU
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15
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Ding S, Liu Y, Duan T, Fang P, Tong Q, Li H, Yu H. Mendelian Randomization Reveals: Triglycerides and Sensorineural Hearing Loss. Bioengineering (Basel) 2024; 11:438. [PMID: 38790305 PMCID: PMC11118253 DOI: 10.3390/bioengineering11050438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 04/23/2024] [Accepted: 04/26/2024] [Indexed: 05/26/2024] Open
Abstract
BACKGROUND Sensorineural hearing loss (SNHL) is a multifactorial disorder with potential links to various physiological systems, including the cardiovascular system via blood lipid levels such as triglycerides (TG). This study investigates the causal relationship between TG levels and SNHL using Mendelian randomization (MR), which offers a method to reduce confounding and reverse causality by using genetic variants as instrumental variables. METHODS Utilizing publicly available genome-wide association study (GWAS) data, we performed a two-sample MR analysis. The initial analysis unveiled a causal relationship between TG (GWAS ID: ebi-a-GCST90018975) and SNHL (GWAS ID: finn b-H8_HL_SEN-NAS). Subsequent analysis validated this through MR with a larger sample size for TG (GWAS ID: ieu-b-111) and SNHL. To conduct the MR analysis, we utilized several methods including inverse-variance weighted (IVW), MR Egger, weighted median, and weighted mode. We also employed Cochrane's Q test to identify any heterogeneity in the MR results. To detect horizontal pleiotropy, we conducted the MR-Egger intercept test and MR pleiotropy residual sum and outliers (MR-PRESSO) test. We performed a leave-one-out analysis to assess the sensitivity of this association. Finally, a meta-analysis of the MR results was undertaken. RESULTS Our study found a significant positive correlation between TG and SNHL, with OR values of 1.14 (95% CI: 1.07-1.23, p < 0.001) in the IVW analysis and 1.09 (95% CI: 1.03-1.16, p < 0.006) in the replicate analysis. We also found no evidence of horizontal pleiotropy or heterogeneity between the genetic variants (p > 0.05), and a leave-one-out test confirmed the stability and robustness of this association. The meta-analysis combining the initial and replicate analyses showed a significant causal effect with OR values of 1.11 (95% CI: 1.06-1.16, p = 0.01). CONCLUSION These findings indicate TG as a risk factor for SNHL, suggesting potential pathways for prevention and intervention in populations at risk. This conclusion underscores the importance of managing TG levels as a strategy to mitigate the risk of developing SNHL.
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Affiliation(s)
- Shun Ding
- ENT Institute and Department of Otorhinolaryngology, Eye and ENT Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, 83 Fenyang Road, Shanghai 200031, China; (S.D.); (Y.L.); (Q.T.)
- NHC Key Laboratory of Hearing Medicine, Fudan University, Shanghai 200031, China
| | - Yixuan Liu
- ENT Institute and Department of Otorhinolaryngology, Eye and ENT Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, 83 Fenyang Road, Shanghai 200031, China; (S.D.); (Y.L.); (Q.T.)
- NHC Key Laboratory of Hearing Medicine, Fudan University, Shanghai 200031, China
| | - Tingting Duan
- Department of Otolaryngology, Head and Neck Surgery, The First Affiliated Hospital, Hainan Medical University, Haikou 570102, China;
| | - Peng Fang
- Department of Orthopedics, Nanjing Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210002, China;
| | - Qiling Tong
- ENT Institute and Department of Otorhinolaryngology, Eye and ENT Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, 83 Fenyang Road, Shanghai 200031, China; (S.D.); (Y.L.); (Q.T.)
- NHC Key Laboratory of Hearing Medicine, Fudan University, Shanghai 200031, China
| | - Huawei Li
- ENT Institute and Department of Otorhinolaryngology, Eye and ENT Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, 83 Fenyang Road, Shanghai 200031, China; (S.D.); (Y.L.); (Q.T.)
- NHC Key Laboratory of Hearing Medicine, Fudan University, Shanghai 200031, China
| | - Huiqian Yu
- ENT Institute and Department of Otorhinolaryngology, Eye and ENT Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, 83 Fenyang Road, Shanghai 200031, China; (S.D.); (Y.L.); (Q.T.)
- NHC Key Laboratory of Hearing Medicine, Fudan University, Shanghai 200031, China
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16
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Yang Y, Luo H, Pan L, Feng C, Guo Z, Zou Y, Zeng B, Huang S, Yuan H, Wu P, Liu D, Dan Y, Xiao J, Li X, Chen Z, Zeng XN, Jiang X, Yang B, Liu Y, Liu Y. Reevaluating the splice-altering variant in TECTA as a cause of nonsyndromic hearing loss DFNA8/12 by functional analysis of RNA. Hum Mol Genet 2024:ddae071. [PMID: 38676628 DOI: 10.1093/hmg/ddae071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 03/25/2024] [Accepted: 04/19/2024] [Indexed: 04/29/2024] Open
Abstract
PURPOSE The aim of this study was to determine the genetic cause of early onset autosomal dominant hearing loss segregating in five-generation kindred of Chinese descent and provide preimplantation genetic testing (PGT)for them. METHODS Clinical examination, pedigree analysis and exome sequencing were carried out on the family. Minigene-based splicing analysis, in vivo RNA analysis and protein structure prediction by molecular modeling were conducted on the candidate variant. PGT for the causative variation and chromosome aneuploidis based on SNP analysis has been used for avoidance of hearing loss in this family. RESULTS All the affected individuals presented with moderate down-sloping hearing loss and whole-exome sequencing identified a novel splice-site variant c.5383+6T>A in the tested subjects within the TECTA locus. Genotyping of all the 32 family members confirmed segregation of this variant and the hearing loss phenotype in the extended family. Functional analysis of RNA and molecular modeling indicates that c.5383+6T>A is a pathogenic splice-site variant and should be considered as genetic cause of the hearing loss. Furthermore, a successful singleton pregnancy with no variation in TECTA c.5383+6 was established and a healthy male child was born by PGT. CONCLUSION We have identified a novel variant c.5383+6T>A in TECTA ZA-ZP inter-domain, which could be attributable to the early-onset autosomal dominant hearing loss. The implications of our study are valuable in elucidating the disrupted RNA splicing and uncovering the genetic cause of hearing loss with TECTA pathogenic variants, as well as providing reproductive approaches to healthy offspring.
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Affiliation(s)
- Yan Yang
- Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, No. 508, Xizhan Street, Honggutan District, Nanchang City, Jiangxi Province, 330006, China
| | - Haiyan Luo
- Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, No. 508, Xizhan Street, Honggutan District, Nanchang City, Jiangxi Province, 330006, China
| | - Lijuan Pan
- Department of Obstetrics, Xiangya Hospital, Central South University, No. 87, Xiangya Road, Kaifu District, Changsha City, Hunan Province, 410083, China
| | - Chuanxin Feng
- Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, No. 508, Xizhan Street, Honggutan District, Nanchang City, Jiangxi Province, 330006, China
| | - Zhen Guo
- Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, No. 508, Xizhan Street, Honggutan District, Nanchang City, Jiangxi Province, 330006, China
| | - Yongyi Zou
- Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, No. 508, Xizhan Street, Honggutan District, Nanchang City, Jiangxi Province, 330006, China
| | - Baitao Zeng
- Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, No. 508, Xizhan Street, Honggutan District, Nanchang City, Jiangxi Province, 330006, China
| | - Shuhui Huang
- Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, No. 508, Xizhan Street, Honggutan District, Nanchang City, Jiangxi Province, 330006, China
| | - Huizhen Yuan
- Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, No. 508, Xizhan Street, Honggutan District, Nanchang City, Jiangxi Province, 330006, China
| | - Ping Wu
- Department of Otolaryngology, Head and Neck Surgery, The Second Affiliated Hospital of Nanchang University, No. 566, University Avenue Road, Honggutan District, Nanchang City, Jiangxi Province, 330006, China
| | - Danping Liu
- Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, No. 508, Xizhan Street, Honggutan District, Nanchang City, Jiangxi Province, 330006, China
| | - Yi Dan
- Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, No. 508, Xizhan Street, Honggutan District, Nanchang City, Jiangxi Province, 330006, China
| | - Junfang Xiao
- Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, No. 508, Xizhan Street, Honggutan District, Nanchang City, Jiangxi Province, 330006, China
| | - XinYu Li
- Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, No. 508, Xizhan Street, Honggutan District, Nanchang City, Jiangxi Province, 330006, China
| | - ZhongFa Chen
- Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, No. 508, Xizhan Street, Honggutan District, Nanchang City, Jiangxi Province, 330006, China
| | - Xiao Ni Zeng
- Department of Neurology, The First Affiliated Hospital of Nanchang University, No. 17, Yongwai Zhengjie Road, Donghu District, Nanchang City, Jiangxi Province, 330006, China
| | - XiangLong Jiang
- Nan Chang Reproductive Hospital, No. 198, Jinggangshan Avenue Road, Qingyun Pu District, Nanchang City, Jiangxi Province Nanchang, 330006, China
| | - Bicheng Yang
- Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, No. 508, Xizhan Street, Honggutan District, Nanchang City, Jiangxi Province, 330006, China
| | - Yuhe Liu
- Department of Otolaryngology, Head and Neck Surgery, Beijing Friendship Hospital, Capital Medical University, No. 95 Yongan Road, Xicheng District, Beijing, 100050, China
| | - Yanqiu Liu
- Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, No. 508, Xizhan Street, Honggutan District, Nanchang City, Jiangxi Province, 330006, China
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Radulescu L, Astefanei O, Serban R, Cozma S, Butnaru C, Martu C. The Validation of the Speech, Spatial and Qualities of Hearing Scale SSQ12 for Native Romanian Speakers with and without Hearing Impairment. J Pers Med 2024; 14:90. [PMID: 38248791 PMCID: PMC10821130 DOI: 10.3390/jpm14010090] [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: 11/29/2023] [Revised: 12/18/2023] [Accepted: 12/21/2023] [Indexed: 01/23/2024] Open
Abstract
BACKGROUND The perceived impact of hearing loss varies considerably among those affected due to the heterogeneous types of hearing loss, their diverse etiologies, and the different rehabilitation possibilities. Therefore, assessing listening skills in a daily context using questionnaires is essential. This study aimed to investigate the validity and reliability of the adapted version of the Speech, Spatial and Qualities of Hearing Scale 12 (SSQ12) in the Romanian language. MATERIALS AND METHODS The SSQ12 is a 12-item self-reporting questionnaire that assesses a range of everyday listening situations. The internal consistency, test-retest reliability, and validity of the r-SSQ12 questionnaire resulting from the adaptation of the original scale were investigated. RESULTS The responses of 183 subjects aged between 11 and 79 years were evaluated. In total, 121 subjects had hearing loss (19 adolescents), and 62 subjects had normal hearing (11 adolescents). Significant differences were observed in the means of the overall score and for individual items between normal-hearing subjects and subjects with hearing loss. The SSQ12 had high internal consistency (Cronbach's alpha = 0.97), and the test-retest scores were highly correlated. CONCLUSIONS The SSQ12 scale can be used to investigate the self-reporting of hearing quality in both general populations to identify hearing disorders and populations with hearing loss.
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Affiliation(s)
- Luminita Radulescu
- Doctoral School, “Grigore T Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania; (L.R.); (S.C.)
- ENT Clinic Department, “Grigore T Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania; (R.S.); (C.B.); (C.M.)
| | - Oana Astefanei
- Doctoral School, “Grigore T Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania; (L.R.); (S.C.)
| | - Roxana Serban
- ENT Clinic Department, “Grigore T Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania; (R.S.); (C.B.); (C.M.)
| | - Sebastian Cozma
- Doctoral School, “Grigore T Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania; (L.R.); (S.C.)
- ENT Clinic Department, “Grigore T Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania; (R.S.); (C.B.); (C.M.)
| | - Corina Butnaru
- ENT Clinic Department, “Grigore T Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania; (R.S.); (C.B.); (C.M.)
| | - Cristian Martu
- ENT Clinic Department, “Grigore T Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania; (R.S.); (C.B.); (C.M.)
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Ji H, Zhang L, Hussain HMJ, Aftab A, Yu H, Xiao M. Novel cis compound heterozygous variants in MYO6 causes early onset of non-syndromic hearing loss in a Chinese family. Front Genet 2024; 14:1275633. [PMID: 38274113 PMCID: PMC10808792 DOI: 10.3389/fgene.2023.1275633] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2023] [Accepted: 12/26/2023] [Indexed: 01/27/2024] Open
Abstract
Background: Mutations in the MYO6 gene have been associated with both autosomal dominant non-syndromic hearing loss (ADNSHL) and autosomal recessive non-syndromic hearing loss (ARNSHL), with a cumulative identification of 125 pathogenic variants. To investigate the underlying genetic factor within a Chinese family affected with heriditary hearing loss, prompted the utilization of high-throughput sequencing. Method: A detailed clinical investigation was performed. Genetic testing was performed by using target panel sequencing, and Sanger sequencing. Targeted sequencing identified the variants and Sanger sequencing was employed to validate segregation of the identified variants within family. Additionally, bioinformatics analysis was performed to strengthen our findings. Results: Clinical investigation revealed the family members were affected by progressive and sensorineural hearing loss with an onset around 8-10 years old. Furthermore, genetic testing identified novel MYO6 variants, c.[2377T>G; 2382G>T] p.[Trp793Gly; Lys794Asn], positioned in a cis pattern, as plausible pathogenic contributors to early-onset hearing loss characterized by a severe and progressive course. Moreover, bioinformatics analysis showd disruptin in hydrogen bonding of mutant amino acids with interactive amino acids. Conclusion: Our research uncovered a relationship between mutations in the MYO6 gene and non-syndromic hearing loss. We identified two variants, c.[2377T>G; 2382G>T] p.[Trp793Gly; Lys794Asn] in MYO6 as strong candidates responsible for the observed progressive hereditary hearing loss. This study not only adds to our knowledge about hearing problems related to MYO6 but also reveals the presence of monogenic compound heterozygosity. Our study will provide a new sight for genetic diagnosis in such patients and their management for future use.
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Affiliation(s)
- Haiting Ji
- Department of Otorhinolaryngology, Affiliated Eye and ENT Hospital of Fudan University, Shanghai, China
- ENT Institute and Otorhinolaryngology, Department of Eye and ENT Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China
- NHC Key Laboratory of Hearing Medicine, Fudan University, Shanghai, China
| | - Lichun Zhang
- Department of Otorhinolaryngology, Head and Neck Surgery, Otto Körner, Rostock University Medical Center, Rostock, Germany
| | | | - Ayesha Aftab
- Department of Biological Sciences, International Islamic University, Islamabad, Pakistan
| | - Huiqian Yu
- Department of Otorhinolaryngology, Affiliated Eye and ENT Hospital of Fudan University, Shanghai, China
- ENT Institute and Otorhinolaryngology, Department of Eye and ENT Hospital, State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Fudan University, Shanghai, China
- NHC Key Laboratory of Hearing Medicine, Fudan University, Shanghai, China
| | - Min Xiao
- Shanghai Ji Ai Genetics and IVF Institute, The Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
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Neissi M, Al-Badran AI, Mohammadi-Asl J. A Novel Deleterious MYO15A Gene Mutation Causes Nonsyndromic Hearing Loss. IRANIAN JOURNAL OF OTORHINOLARYNGOLOGY 2024; 36:355-360. [PMID: 38259694 PMCID: PMC10800138 DOI: 10.22038/ijorl.2023.69889.3372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 12/18/2023] [Indexed: 01/24/2024]
Abstract
Introduction Hearing loss (HL) is the most frequent sensory neurodeficiency, affecting a broad spectrum of individuals globally. Within this context, the role of genetic factors takes center stage, particularly in cases of hereditary HL. Case Report Here, we present a nonsyndromic HL (NSHL) case report. The patient is a 21-year-old man with progressive HL. The whole-exome sequencing (WES) demonstrated a novel homozygous missense mutation, c.9908A>C; p.Lys3303Thr, in the proband's exon 61 of the MYO15A gene. Further analysis has revealed that the detected mutation is present in a heterozygous state in the parents. Conclusion WES analysis in this study revealed a novel mutation in the MYO15A gene. Our data indicates that the MYO15A-p.Lys3303Thr mutation is the likely pathogenic variant associated with NSHL. Additionally, this finding enhances genetic counseling for individuals with NSHL patients, highlighting the value of the WES method in detecting rare genetic variants.
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Affiliation(s)
- Mostafa Neissi
- Department of Genetics, Khuzestan Science and Research Branch, Islamic Azad University, Ahvaz, Iran. Department of Genetics, Ahvaz Branch, Islamic Azad University, Ahvaz, Iran.
| | | | - Javad Mohammadi-Asl
- Department of Medical Genetics, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
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20
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Kalinousky AJ, Luperchio TR, Schrode KM, Harris JR, Zhang L, DeLeon VB, Fahrner JA, Lauer AM, Bjornsson HT. KMT2D Deficiency Causes Sensorineural Hearing Loss in Mice and Humans. Genes (Basel) 2023; 15:48. [PMID: 38254937 PMCID: PMC10815913 DOI: 10.3390/genes15010048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Revised: 12/19/2023] [Accepted: 12/21/2023] [Indexed: 01/24/2024] Open
Abstract
Individuals with Kabuki syndrome type 1 (KS1) often have hearing loss recognized in middle childhood. Current clinical dogma suggests that this phenotype is caused by frequent infections due to the immune deficiency in KS1 and/or secondary to structural abnormalities of the ear. To clarify some aspects of hearing loss, we collected information on hearing status from 21 individuals with KS1 and found that individuals have both sensorineural and conductive hearing loss, with the average age of presentation being 7 years. Our data suggest that while ear infections and structural abnormalities contribute to the observed hearing loss, these factors do not explain all loss. Using a KS1 mouse model, we found hearing abnormalities from hearing onset, as indicated by auditory brainstem response measurements. In contrast to mouse and human data for CHARGE syndrome, a disorder possessing overlapping clinical features with KS and a well-known cause of hearing loss and structural inner ear abnormalities, there are no apparent structural abnormalities of the cochlea in KS1 mice. The KS1 mice also display diminished distortion product otoacoustic emission levels, which suggests outer hair cell dysfunction. Combining these findings, our data suggests that KMT2D dysfunction causes sensorineural hearing loss compounded with external factors, such as infection.
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Affiliation(s)
- Allison J. Kalinousky
- McKusick-Nathans Department of Genetic Medicine, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA; (A.J.K.); (T.R.L.); (J.R.H.); (L.Z.); (J.A.F.)
| | - Teresa R. Luperchio
- McKusick-Nathans Department of Genetic Medicine, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA; (A.J.K.); (T.R.L.); (J.R.H.); (L.Z.); (J.A.F.)
| | - Katrina M. Schrode
- Department of Otolaryngology-Head and Neck Surgery and Center for Hearing and Balance, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA; (K.M.S.); (A.M.L.)
| | - Jacqueline R. Harris
- McKusick-Nathans Department of Genetic Medicine, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA; (A.J.K.); (T.R.L.); (J.R.H.); (L.Z.); (J.A.F.)
- Department of Neurology, Kennedy Krieger Institute, Baltimore, MD 21205, USA
| | - Li Zhang
- McKusick-Nathans Department of Genetic Medicine, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA; (A.J.K.); (T.R.L.); (J.R.H.); (L.Z.); (J.A.F.)
| | - Valerie B. DeLeon
- Department of Anthropology, University of Florida, Gainesville, FL 32610, USA;
| | - Jill A. Fahrner
- McKusick-Nathans Department of Genetic Medicine, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA; (A.J.K.); (T.R.L.); (J.R.H.); (L.Z.); (J.A.F.)
- Department of Pediatrics, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
| | - Amanda M. Lauer
- Department of Otolaryngology-Head and Neck Surgery and Center for Hearing and Balance, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA; (K.M.S.); (A.M.L.)
| | - Hans T. Bjornsson
- McKusick-Nathans Department of Genetic Medicine, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA; (A.J.K.); (T.R.L.); (J.R.H.); (L.Z.); (J.A.F.)
- Department of Pediatrics, Johns Hopkins School of Medicine, Baltimore, MD 21205, USA
- Landspitali University Hospital, 102 Reykjavik, Iceland
- Faculty of Medicine, University of Iceland, 101 Reykjavik, Iceland
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Peng Y, Xiang M, Fan T, Zhong X, Dai A, Feng J, Guan P, Gong J, Li J, Wang Y. A Novel COCH p.D544Vfs*3 Variant Associated with DFNA9 Sensorineural Hearing Loss Causes Pathological Multimeric Cochlin Formation. Life (Basel) 2023; 14:33. [PMID: 38255649 PMCID: PMC10817332 DOI: 10.3390/life14010033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/16/2023] [Accepted: 12/19/2023] [Indexed: 01/24/2024] Open
Abstract
COCH (coagulation factor C homology) is one of the most frequently mutated genes of autosomal dominant non-syndromic hearing loss. Variants in COCH could cause DFNA9, which is characterized by late-onset hearing loss with variable degrees of vestibular dysfunction. In this study, we report a Chinese family with a novel COCH variant (c.1687delA) causing p.D544Vfs*3 in the cochlin. Comprehensive audiometric tests and vestibular function assessments were taken to acquire the phenotypic profile of the subjects. Next-generation sequencing was conducted and segregation analysis was carried out using Sanger sequencing. The proband presented mild vestibular symptoms and normal functional assessment results in almost every test, while the variant co-segregated with hearing impairment in the pedigree. The variant was located beyond the vWFA2 domain, which was predicted to affect the post-translational cleavage of the cochlin via molecular modeling analysis. Notably, in the overexpressing study, by transient transfecting the HEK 293T cells, we found that the p.D544Vfs*3 variant increased the formation of multimeric cochlin. Our result enriched the spectrum of DFNA9-linked pathological COCH variants and suggested that variants, causative of cochlin multimerization, could be related to DFNA9 with sensorineural hearing loss rather than serious vestibular symptoms.
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Affiliation(s)
- Yingqiu Peng
- ENT Institute and Department of Otorhinolaryngology, EYE & ENT Hospital, Fudan University, Shanghai 200031, China
- NHC Key Laboratory of Hearing Medicine, Fudan University, Shanghai 200031, China
| | - Mengya Xiang
- ENT Institute and Department of Otorhinolaryngology, EYE & ENT Hospital, Fudan University, Shanghai 200031, China
- NHC Key Laboratory of Hearing Medicine, Fudan University, Shanghai 200031, China
| | - Ting Fan
- ENT Institute and Department of Otorhinolaryngology, EYE & ENT Hospital, Fudan University, Shanghai 200031, China
- NHC Key Laboratory of Hearing Medicine, Fudan University, Shanghai 200031, China
| | - Xiaofang Zhong
- Clinical Laboratory Center, Children’s Hospital of Fudan University, Shanghai 201102, China
| | - Aqiang Dai
- ENT Institute and Department of Otorhinolaryngology, EYE & ENT Hospital, Fudan University, Shanghai 200031, China
| | - Jialing Feng
- ENT Institute and Department of Otorhinolaryngology, EYE & ENT Hospital, Fudan University, Shanghai 200031, China
| | - Pengfei Guan
- ENT Institute and Department of Otorhinolaryngology, EYE & ENT Hospital, Fudan University, Shanghai 200031, China
- NHC Key Laboratory of Hearing Medicine, Fudan University, Shanghai 200031, China
| | - Jiamin Gong
- ENT Institute and Department of Otorhinolaryngology, EYE & ENT Hospital, Fudan University, Shanghai 200031, China
| | - Jian Li
- Clinical Laboratory Center, Children’s Hospital of Fudan University, Shanghai 201102, China
| | - Yunfeng Wang
- ENT Institute and Department of Otorhinolaryngology, EYE & ENT Hospital, Fudan University, Shanghai 200031, China
- NHC Key Laboratory of Hearing Medicine, Fudan University, Shanghai 200031, China
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22
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Osakabe N, Modafferi S, Ontario ML, Rampulla F, Zimbone V, Migliore MR, Fritsch T, Abdelhameed AS, Maiolino L, Lupo G, Anfuso CD, Genovese E, Monzani D, Wenzel U, Calabrese EJ, Vabulas RM, Calabrese V. Polyphenols in Inner Ear Neurobiology, Health and Disease: From Bench to Clinics. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:2045. [PMID: 38004094 PMCID: PMC10673256 DOI: 10.3390/medicina59112045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/25/2023] [Accepted: 11/17/2023] [Indexed: 11/26/2023]
Abstract
There is substantial experimental and clinical interest in providing effective ways to both prevent and slow the onset of hearing loss. Auditory hair cells, which occur along the basilar membrane of the cochlea, often lose functionality due to age-related biological alterations, as well as from exposure to high decibel sounds affecting a diminished/damaged auditory sensitivity. Hearing loss is also seen to take place due to neuronal degeneration before or following hair cell destruction/loss. A strategy is necessary to protect hair cells and XIII cranial/auditory nerve cells prior to injury and throughout aging. Within this context, it was proposed that cochlea neural stem cells may be protected from such aging and environmental/noise insults via the ingestion of protective dietary supplements. Of particular importance is that these studies typically display a hormetic-like biphasic dose-response pattern that prevents the occurrence of auditory cell damage induced by various model chemical toxins, such as cisplatin. Likewise, the hormetic dose-response also enhances the occurrence of cochlear neural cell viability, proliferation, and differentiation. These findings are particularly important since they confirmed a strong dose dependency of the significant beneficial effects (which is biphasic), whilst having a low-dose beneficial response, whereas extensive exposures may become ineffective and/or potentially harmful. According to hormesis, phytochemicals including polyphenols exhibit biphasic dose-response effects activating low-dose antioxidant signaling pathways, resulting in the upregulation of vitagenes, a group of genes involved in preserving cellular homeostasis during stressful conditions. Modulation of the vitagene network through polyphenols increases cellular resilience mechanisms, thus impacting neurological disorder pathophysiology. Here, we aimed to explore polyphenols targeting the NF-E2-related factor 2 (Nrf2) pathway to neuroprotective and therapeutic strategies that can potentially reduce oxidative stress and inflammation, thus preventing auditory hair cell and XIII cranial/auditory nerve cell degeneration. Furthermore, we explored techniques to enhance their bioavailability and efficacy.
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Affiliation(s)
- Naomi Osakabe
- Department of Bioscience and Engineering, Shibaura Institute Technology, Saitama 337-8570, Japan;
| | - Sergio Modafferi
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95125 Catania, Italy; (S.M.); (M.L.O.); (F.R.); (V.Z.); (M.R.M.); (G.L.); (C.D.A.)
| | - Maria Laura Ontario
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95125 Catania, Italy; (S.M.); (M.L.O.); (F.R.); (V.Z.); (M.R.M.); (G.L.); (C.D.A.)
| | - Francesco Rampulla
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95125 Catania, Italy; (S.M.); (M.L.O.); (F.R.); (V.Z.); (M.R.M.); (G.L.); (C.D.A.)
| | - Vincenzo Zimbone
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95125 Catania, Italy; (S.M.); (M.L.O.); (F.R.); (V.Z.); (M.R.M.); (G.L.); (C.D.A.)
| | - Maria Rita Migliore
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95125 Catania, Italy; (S.M.); (M.L.O.); (F.R.); (V.Z.); (M.R.M.); (G.L.); (C.D.A.)
| | | | - Ali S. Abdelhameed
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Luigi Maiolino
- Department of Medical, Surgical Advanced Technologies “G. F. Ingrassia”, University of Catania, 95125 Catania, Italy;
| | - Gabriella Lupo
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95125 Catania, Italy; (S.M.); (M.L.O.); (F.R.); (V.Z.); (M.R.M.); (G.L.); (C.D.A.)
| | - Carmelina Daniela Anfuso
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95125 Catania, Italy; (S.M.); (M.L.O.); (F.R.); (V.Z.); (M.R.M.); (G.L.); (C.D.A.)
| | - Elisabetta Genovese
- Department of Maternal and Child and Adult Medical and Surgical Sciences, University of Modena and Reggio Emilia, 41125 Modena, Italy;
| | - Daniele Monzani
- Department of Surgery, Dentistry, Paediatrics and Gynaecology, University of Verona, 37100 Verona, Italy;
| | - Uwe Wenzel
- Institut für Ernährungswissenschaft, Justus Liebig Universitat Giessen, 35392 Giessen, Germany
| | - Edward J. Calabrese
- Department of Environmental Health Sciences, Morrill I, N344, University of Massachusetts, Amherst, MA 01003, USA;
| | - R. Martin Vabulas
- Charité-Universitätsmedizin Berlin, Institute of Biochemistry, Charitéplatz 1, 10117 Berlin, Germany;
| | - Vittorio Calabrese
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95125 Catania, Italy; (S.M.); (M.L.O.); (F.R.); (V.Z.); (M.R.M.); (G.L.); (C.D.A.)
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23
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Tisi A, Palaniappan S, Maccarrone M. Advanced Omics Techniques for Understanding Cochlear Genome, Epigenome, and Transcriptome in Health and Disease. Biomolecules 2023; 13:1534. [PMID: 37892216 PMCID: PMC10605747 DOI: 10.3390/biom13101534] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 10/10/2023] [Accepted: 10/13/2023] [Indexed: 10/29/2023] Open
Abstract
Advanced genomics, transcriptomics, and epigenomics techniques are providing unprecedented insights into the understanding of the molecular underpinnings of the central nervous system, including the neuro-sensory cochlea of the inner ear. Here, we report for the first time a comprehensive and updated overview of the most advanced omics techniques for the study of nucleic acids and their applications in cochlear research. We describe the available in vitro and in vivo models for hearing research and the principles of genomics, transcriptomics, and epigenomics, alongside their most advanced technologies (like single-cell omics and spatial omics), which allow for the investigation of the molecular events that occur at a single-cell resolution while retaining the spatial information.
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Affiliation(s)
- Annamaria Tisi
- Department of Biotechnological and Applied Clinical Sciences, University of L’Aquila, 67100 L’Aquila, Italy;
| | - Sakthimala Palaniappan
- Department of Biotechnological and Applied Clinical Sciences, University of L’Aquila, 67100 L’Aquila, Italy;
| | - Mauro Maccarrone
- Department of Biotechnological and Applied Clinical Sciences, University of L’Aquila, 67100 L’Aquila, Italy;
- Laboratory of Lipid Neurochemistry, European Center for Brain Research (CERC), Santa Lucia Foundation IRCCS, 00143 Rome, Italy
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