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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] [What about the content of this article? (0)] [Affiliation(s)] [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, Florida, USA
- Department of Audiology, Faculty of Health Sciences, Ankara University, Ankara, Turkey
| | - Memoona Ramzan
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Asli Subasioglu
- Department of Medical Genetics, İzmir Katip Çelebi University, Ataturk Education and Research Hospital, İzmir, Turkey
| | - Ahmet Mutlu
- Faculty of Medicine, Department of Otorhinolaryngology, Istanbul Medeniyet University, Istanbul, Turkey
- Otorhinolaryngology Clinic of Goztepe Prof.Dr. Suleyman Yalcin City Hospital, Istanbul, Turkey
| | - LéShon Peart
- Dr. John T. Macdonald Department of Human Genetics, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Serhat Seyhan
- Laboratory of Genetics, Memorial Şişli Hospital, Istanbul, Turkey
| | - Shengru Guo
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Kadri Ila
- Department of Otorhinolaryngology, Umraniye Education and Research Hospital, Istanbul, Turkey
| | - Burhan Balta
- Department of Medical Genetics, Kayseri Training and Research Hospital, Kayseri, Turkey
| | - Mahmut Tayyar Kalcioglu
- Faculty of Medicine, Department of Otorhinolaryngology, Istanbul Medeniyet University, Istanbul, Turkey
- Otorhinolaryngology Clinic of Goztepe Prof.Dr. Suleyman Yalcin City Hospital, Istanbul, Turkey
| | - Guney Bademci
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, Florida, USA
- Dr. John T. Macdonald Department of Human Genetics, University of Miami Miller School of Medicine, Miami, Florida, USA
| | - Mustafa Tekin
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, Florida, USA
- Dr. John T. Macdonald Department of Human Genetics, University of Miami Miller School of Medicine, Miami, Florida, USA
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Lo E, Blair J, Yamamoto N, Diaz-Miranda MA, Bedoukian E, Gray C, Lawrence A, Dedhia K, Elden LM, Germiller JA, Kazahaya K, Sobol SE, Luo M, Krantz ID, Hartman TR. Recurrent missense variant identified in two unrelated families with MPZL2-related hearing loss, expanding the variant spectrum associated with DFNB111. Am J Med Genet A 2024; 194:e63530. [PMID: 38197511 DOI: 10.1002/ajmg.a.63530] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Revised: 12/17/2023] [Accepted: 12/22/2023] [Indexed: 01/11/2024]
Abstract
MPZL2-related hearing loss is a rare form of autosomal recessive hearing loss characterized by progressive, mild sloping to severe sensorineural hearing loss. Thirty-five previously reported patients had biallelic truncating variants in MPZL2, with the exception of one patient with a missense variant of uncertain significance and a truncating variant. Here, we describe the clinical characteristics and genotypes of five patients from four families with confirmed MPZL2-related hearing loss. A rare missense likely pathogenic variant [NM_005797.4(MPZL2):c.280C>T,p.(Arg94Trp)] located in exon 3 was confirmed to be in trans with a recurrent pathogenic truncating variant that segregated with hearing loss in three of the patients from two unrelated families. This is the first recurrent likely pathogenic missense variant identified in MPZL2. Apparently milder or later-onset hearing loss associated with rare missense variants in MPZL2 indicates that some missense variants in this gene may cause a milder phenotype than that resulting from homozygous or compound heterozygous truncating variants. This study, along with the identification of truncating loss of function and missense MPZL2 variants in several diverse populations, suggests that MPZL2-related hearing loss may be more common than previously appreciated and demonstrates the need for MPZL2 inclusion in hearing loss testing panels.
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Affiliation(s)
- Emma Lo
- Roberts Individualized Medical Genetics Center (RIMGC), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Justin Blair
- Roberts Individualized Medical Genetics Center (RIMGC), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Nobuko Yamamoto
- Roberts Individualized Medical Genetics Center (RIMGC), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Division of Otolaryngology, Department of Surgical Specialties, National Center for Children's Health and Development, Tokyo, Japan
| | - Maria Alejandra Diaz-Miranda
- Division of Genomic Diagnostics, Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Emma Bedoukian
- Roberts Individualized Medical Genetics Center (RIMGC), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Christopher Gray
- Roberts Individualized Medical Genetics Center (RIMGC), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Audrey Lawrence
- Roberts Individualized Medical Genetics Center (RIMGC), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
| | - Kavita Dedhia
- Division of Otolaryngology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Otorhinolaryngology - Head and Neck Surgery, The Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Lisa M Elden
- Division of Otolaryngology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Otorhinolaryngology - Head and Neck Surgery, The Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - John A Germiller
- Division of Otolaryngology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Otorhinolaryngology - Head and Neck Surgery, The Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Ken Kazahaya
- Division of Otolaryngology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Otorhinolaryngology - Head and Neck Surgery, The Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Steven E Sobol
- Division of Otolaryngology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Otorhinolaryngology - Head and Neck Surgery, The Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Minjie Luo
- Division of Genomic Diagnostics, Department of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Ian D Krantz
- Roberts Individualized Medical Genetics Center (RIMGC), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Tiffiney R Hartman
- Roberts Individualized Medical Genetics Center (RIMGC), Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Division of Human Genetics, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA
- Translational Medicine and Human Genetics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
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Yan X, Wang J, Yang W, Li L, Shen T, Geng J, Zhang Q, Zhong M, Xiong W, Bu F, Lu Y, Zhao Y, Cheng J, Yuan H. Molecular diagnosis, clinical evaluation and phenotypic spectrum of Townes-Brocks syndrome: insights from a large Chinese hearing loss cohort. J Med Genet 2024; 61:459-468. [PMID: 38296632 DOI: 10.1136/jmg-2023-109579] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Accepted: 01/10/2024] [Indexed: 02/02/2024]
Abstract
BACKGROUND Townes-Brocks syndrome (TBS) is a rare genetic disorder characterised by multiple malformations. Due to its phenotypic heterogeneity and rarity, diagnosis and recognition of TBS can be challenging and there has been a lack of investigation of patients with atypical TBS in large cohorts and delineation of their phenotypic characteristics. METHODS We screened SALL1 and DACT1 variants using next-generation sequencing in the China Deafness Genetics Consortium (CDGC) cohort enrolling 20 666 unrelated hearing loss (HL) cases. Comprehensive clinical evaluations were conducted on seven members from a three-generation TBS family. Combining data from previously reported cases, we also provided a landscape of phenotypes and genotypes of patients with TBS. RESULTS We identified five novel and two reported pathogenic/likely pathogenic (P/LP) SALL1 variants from seven families. Audiological features in patients differed in severity and binaural asymmetry. Moreover, previously undocumented malformations in the middle and inner ear were detected in one patient. By comprehensive clinical evaluations, we further provide evidence for the causal relationship between SALL1 variation and certain endocrine abnormalities. Penetrance analysis within familial contexts revealed incomplete penetrance among first-generation patients with TBS and a higher disease burden among their affected offspring. CONCLUSION This study presents the first insight of genetic screening for patients with TBS in a large HL cohort. We broadened the phenotypic-genotypic spectrum of TBS and our results supported an underestimated prevalence of TBS. Due to the rarity and phenotypic heterogeneity of rare diseases, broader spectrum molecular tests, especially whole genome sequencing, can improve the situation of underdiagnosis and provide effective recommendations for clinical management.
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Affiliation(s)
- Xiaohong Yan
- Department of Otolaryngology-Head and Neck Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan, China
- Institute of Rare Diseases, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Jing Wang
- Department of Otolaryngology-Head and Neck Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan, China
- Institute of Rare Diseases, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Wen Yang
- Department of Otolaryngology-Head and Neck Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan, China
- Institute of Rare Diseases, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Linke Li
- Department of Otolaryngology-Head and Neck Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan, China
- Institute of Rare Diseases, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Tian Shen
- Department of Otolaryngology-Head and Neck Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan, China
- Institute of Rare Diseases, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Jia Geng
- Department of Otolaryngology-Head and Neck Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan, China
- Institute of Rare Diseases, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Qian Zhang
- Institute of Rare Diseases, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Mingjun Zhong
- Institute of Rare Diseases, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Wenyu Xiong
- Institute of Rare Diseases, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Fengxiao Bu
- Department of Otolaryngology-Head and Neck Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan, China
- Institute of Rare Diseases, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Yu Lu
- Department of Otolaryngology-Head and Neck Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan, China
- Institute of Rare Diseases, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Yu Zhao
- Department of Otolaryngology-Head and Neck Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Jing Cheng
- Department of Otolaryngology-Head and Neck Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan, China
- Institute of Rare Diseases, West China Hospital of Sichuan University, Chengdu, Sichuan, China
| | - Huijun Yuan
- Department of Otolaryngology-Head and Neck Surgery, West China Hospital of Sichuan University, Chengdu, Sichuan, China
- Institute of Rare Diseases, West China Hospital of Sichuan University, Chengdu, Sichuan, China
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Li S, Li S, Chen D, Zhao S, Liu C, Zhang R, Chen Y, Guo X, Song X. Case report of a novel mutation in the TNC gene in Chinese patients with nonsyndromic hearing loss. Medicine (Baltimore) 2024; 103:e37702. [PMID: 38640279 PMCID: PMC11029965 DOI: 10.1097/md.0000000000037702] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2023] [Accepted: 03/04/2024] [Indexed: 04/21/2024] Open
Abstract
RATIONALE Hereditary hearing loss is known to exhibit a significant degree of genetic heterogeneity. Herein, we present a case report of a novel mutation in the tenascin-C (TNC) gene in Chinese patients with nonsyndromic hearing loss (NSHL). PATIENT CONCERNS This includes a young deaf couple and their 2-year-old baby. DIAGNOSES Based on the clinical information, hearing test, metagenomic next-generation sequencing (mNGS), Sanger sequencing, protein function and structure analysis, and model prediction, in our case, the study results revealed 2 heterozygous mutations in the TNC gene (c.2852C>T, p.Thr951Ile) and the TBC1 domain family member 24 (TBC1D24) gene (c.1570C>T, p.Arg524Trp). These mutations may be responsible for the hearing loss observed in this family. Notably, the heterozygous mutations in the TNC gene (c.2852C>T, p.Thr951Ile) have not been previously reported in the literature. INTERVENTIONS Avoid taking drugs that can cause deafness, wearing hearing AIDS, and cochlear implants. OUTCOMES Regular follow-up of family members is ongoing. LESSONS The genetic diagnosis of NSHL holds significant importance as it helps in making informed treatment decisions, providing prognostic information, and offering genetic counseling for the patient's family.
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Affiliation(s)
- Shouxia Li
- Department of Laboratory Medicine, Handan Central Hospital, Hebei Medical University, Handan, Hebei, China
| | - Shurui Li
- Department of Laboratory Medicine, Handan Central Hospital, Hebei Medical University, Handan, Hebei, China
| | - Dingli Chen
- Department of Laboratory Medicine, Handan Central Hospital, Hebei Medical University, Handan, Hebei, China
| | - Subin Zhao
- Department of General Surgery, Affiliated Hospital of Hebei University of Engineering, Handan, Hebei, China
| | - Cairu Liu
- Department of Obstetrics, Handan Central Hospital, Hebei Medical University, Handan, Hebei, China
| | - Ruimin Zhang
- Department of Neonatology, Handan Central Hospital, Hebei Medical University, Handan, Hebei, China
| | - Yongxue Chen
- Department of Anesthesiology, Handan Central Hospital, Hebei Medical University, Handan, Hebei, China
| | - Xiangrui Guo
- Department of Laboratory Medicine, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, China
| | - Xuedong Song
- Department of Laboratory Medicine, Handan Central Hospital, Hebei Medical University, Handan, Hebei, China
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Sakuma N, Nishio SY, Goto SI, Honkura Y, Oda K, Takeda H, Kobayashi M, Kumakawa K, Iwasaki S, Takahashi M, Ito T, Arai Y, Isono Y, Obara N, Matsunobu T, Okubo K, Usami SI. Detailed Clinical Features of PTPRQ-Associated Hearing Loss Identified in a Large Japanese Hearing Loss Cohort. Genes (Basel) 2024; 15:489. [PMID: 38674423 PMCID: PMC11050587 DOI: 10.3390/genes15040489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2024] [Revised: 04/10/2024] [Accepted: 04/10/2024] [Indexed: 04/28/2024] Open
Abstract
The PTPRQ gene has been identified as one of the genes responsible for non-syndromic sensorineural hearing loss (SNHL), and assigned as DFNA73 and DFNB84. To date, about 30 causative PTPRQ variants have been reported to cause SNHL. However, the detailed clinical features of PTPRQ-associated hearing loss (HL) remain unclear. In this study, 15,684 patients with SNHL were enrolled and genetic analysis was performed using massively parallel DNA sequencing (MPS) for 63 target deafness genes. We identified 17 possibly disease-causing PTPRQ variants in 13 Japanese patients, with 15 of the 17 variants regarded as novel. The majority of variants identified in this study were loss of function. Patients with PTPRQ-associated HL mostly showed congenital or childhood onset. Their hearing levels at high frequency deteriorated earlier than that at low frequency. The severity of HL progressed from moderate to severe or profound HL. Five patients with profound or severe HL received cochlear implantation, and the postoperative sound field threshold levels and discrimination scores were favorable. These findings will contribute to a greater understanding of the clinical features of PTPRQ-associated HL and may be relevant in clinical practice.
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Affiliation(s)
- Naoko Sakuma
- Department of Otorhinolaryngology, Head and Neck Surgery, Nippon Medical School, Tokyo 113-8603, Japan; (N.S.); (T.M.); (K.O.)
| | - Shin-ya Nishio
- Department of Hearing Implant Sciences, Shinshu University School of Medicine, 3-1-1, Asahi, Matsumoto City 390-8621, Japan;
| | - Shin-ichi Goto
- Department of Otorhinolaryngology, Hirosaki University Graduate School of Medicine, Hirosaki 036-8560, Japan;
| | - Yohei Honkura
- Department of Otolaryngology-Head and Neck Surgery, Tohoku University School of Medicine, Sendai 980-8575, Japan;
| | - Kiyoshi Oda
- Department of Otolaryngology, Tohoku Rosai Hospital, Sendai 981-8563, Japan;
| | - Hidehiko Takeda
- Department of Otorhinolaryngology, Toranomon Hospital, Tokyo 105-8470, Japan; (H.T.); (M.K.)
| | - Marina Kobayashi
- Department of Otorhinolaryngology, Toranomon Hospital, Tokyo 105-8470, Japan; (H.T.); (M.K.)
| | - Kozo Kumakawa
- Department of Otolaryngology, Kamio Memorial Hospital, Tokyo 101-0063, Japan;
- Akasaka Toranomon Clinic, Tokyo 107-0052, Japan
| | - Satoshi Iwasaki
- Department of Otorhinolaryngology, International University of Health and Welfare, Mita Hospital, Tokyo 108-8329, Japan; (S.I.); (M.T.)
| | - Masahiro Takahashi
- Department of Otorhinolaryngology, International University of Health and Welfare, Mita Hospital, Tokyo 108-8329, Japan; (S.I.); (M.T.)
| | - Taku Ito
- Department of Otorhinolaryngology, Tokyo Medical and Dental University, Tokyo 113-8510, Japan;
| | - Yasuhiro Arai
- Department of Otorhinolaryngology-Head and Neck Surgery, Yokohama City University School of Medicine, Yokohama 236-0004, Japan;
| | - Yasuhiro Isono
- Department of Otolaryngology, Yokohama City University Medical Center, Yokohama 232-0024, Japan;
| | - Natsuko Obara
- Department of Otolaryngology, Gifu University Graduate School of Medicine, Gifu City 501-1194, Japan;
| | - Takeshi Matsunobu
- Department of Otorhinolaryngology, Head and Neck Surgery, Nippon Medical School, Tokyo 113-8603, Japan; (N.S.); (T.M.); (K.O.)
| | - Kimihiro Okubo
- Department of Otorhinolaryngology, Head and Neck Surgery, Nippon Medical School, Tokyo 113-8603, Japan; (N.S.); (T.M.); (K.O.)
| | - Shin-ichi Usami
- Department of Hearing Implant Sciences, Shinshu University School of Medicine, 3-1-1, Asahi, Matsumoto City 390-8621, Japan;
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Harris SR. Growing up with Marshall syndrome: A case report from infancy to age 12.5 years. Am J Med Genet A 2024; 194:e63488. [PMID: 38062645 DOI: 10.1002/ajmg.a.63488] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Revised: 11/13/2023] [Accepted: 11/18/2023] [Indexed: 03/10/2024]
Abstract
Marshall syndrome is an extremely rare genetic disorder usually diagnosed in infancy with a prevalence of <1 in 1 million. Based on the literature reviewed, this is the first case report to provide a longitudinal history of a child with Marshall syndrome (from birth to age 12.5 years). This longitudinal case report arose in part from desires of this child's parents to share the story of their early fears at her initial diagnosis and compare those to how well she has turned out.
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Affiliation(s)
- Susan R Harris
- Department of Physical Therapy, Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
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7
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Zhou P, Li L, Ming X, Cai W, Hao B, Hu Y, He Z, Chen X. Causal relationship between psychiatric disorders and sensorineural hearing loss: A bidirectional two-sample mendelian randomization analysis. J Psychosom Res 2024; 179:111641. [PMID: 38461621 DOI: 10.1016/j.jpsychores.2024.111641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2023] [Revised: 02/20/2024] [Accepted: 03/05/2024] [Indexed: 03/12/2024]
Abstract
OBJECTIVE This study employed bidirectional two-sample Mendelian randomization (MR) to investigate the causal links between psychiatric disorders and sensorineural hearing loss (SNHL). METHODS Instrumental variables were chosen from genome-wide association studies of schizophrenia (SCH, N = 127,906), bipolar disorder (BD, N = 51,710), major depressive disorder (MDD, N = 500,199), and SNHL (N = 212,544). In the univariable MR analysis, the inverse-variance weighted method (IVW) was conducted as the primary analysis, complemented by various sensitivity analyses to ensure result robustness. RESULTS SCH exhibited a decreased the risk of SNHL (OR = 0.949, P = 0.005), whereas BD showed an increased incidence of SNHL (OR = 1.145, P = 0.005). No causal association was found for MDD on SNHL (OR = 1.088, P = 0.246). Multivariable MR validated these results. In the reverse direction, genetically predicted SNHL was linked to a decreased risk of SCH with suggestive significance (OR = 0.912, P = 0.023). No reverse causal relationships were observed for SNHL influencing BD or MDD. These findings remained consistent across various MR methods and sensitivity analyses. CONCLUSION This study demonstrated that the causal relationships between diverse psychiatric disorders with SNHL were heterogeneous. Specifically, SCH was inversely associated with SNHL susceptibility, and similarly, a reduced risk of SNHL was observed in schizophrenia patients. In contrast, BD exhibited an increased incidence of SNHL, although SNHL did not influence the prevalence of BD. No causal association between MDD and SNHL was found.
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Affiliation(s)
- Peng Zhou
- Department of Otorhinolaryngology, Head and Neck Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China; Sleep Medicine Centre, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Ling Li
- Department of Nuclear Medicine, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China
| | - Xiaoping Ming
- Department of Otorhinolaryngology, Head and Neck Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China; Sleep Medicine Centre, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Wanyue Cai
- Department of Otorhinolaryngology, Head and Neck Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China; Sleep Medicine Centre, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Bin Hao
- Department of Otorhinolaryngology, Head and Neck Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China; Sleep Medicine Centre, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Yifan Hu
- Department of Otorhinolaryngology, Head and Neck Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China; Sleep Medicine Centre, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China
| | - Zuhong He
- Department of Otorhinolaryngology, Head and Neck Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China.
| | - Xiong Chen
- Department of Otorhinolaryngology, Head and Neck Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, Hubei, China; Sleep Medicine Centre, Zhongnan Hospital of Wuhan University, Wuhan, Hubei, China.
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8
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Okumura G, Nakamura K, Seyama R, Uchiyama Y, Shinagawa J, Nishio S, Ikeda J, Takayama S, Kodaira M, Kosho T, Takumi Y, Matsumoto N, Sekijima Y. Auditory Neuropathy Spectrum Disorder Progressing with Motor and Sensory Neuropathy Caused by an ATP1A1 Variant. Intern Med 2024; 63:1005-1008. [PMID: 37558483 PMCID: PMC11045389 DOI: 10.2169/internalmedicine.1935-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 07/03/2023] [Indexed: 08/11/2023] Open
Abstract
We encountered a 27-year-old Japanese woman with sensorineural deafness progressing to motor and sensory neuropathy. At 16 years old, she had developed weakness in her lower extremities and hearing impairment, which gradually deteriorated. At 22 years old, combined audiological, electrophysiological, and radiological examination results were consistent with auditory neuropathy spectrum disorder (ANSD). Genetic analyses identified a previously reported missense variant in the ATP1A1 gene (NM_000701.8:c.1799C>G, p.Pro600Arg). Although sensorineural deafness has been reported as a clinical manifestation of ATP1A1-related disorders, our case suggested that ANSD may underlie the pathogenesis of deafness in ATP1A1-related disorders. This case report broadens the genotype-phenotype spectrum of ATP1A1-related disorders.
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Affiliation(s)
- Gaku Okumura
- Department of Medicine (Neurology & Rheumatology), Shinshu University School of Medicine, Japan
| | - Katsuya Nakamura
- Department of Medicine (Neurology & Rheumatology), Shinshu University School of Medicine, Japan
- Center for Medical Genetics, Shinshu University Hospital, Japan
| | - Rie Seyama
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Japan
- Department of Obstetrics and Gynecology, Juntendo University, Japan
| | - Yuri Uchiyama
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Japan
- Department of Rare Disease Genomics, Yokohama City University Hospital, Japan
| | - Jun Shinagawa
- Department of Otorhinolaryngology Head and Neck Surgery, Shinshu University School of Medicine, Japan
| | - Shinya Nishio
- Department of Otorhinolaryngology Head and Neck Surgery, Shinshu University School of Medicine, Japan
- Department of Hearing Implant Sciences, Shinshu University School of Medicine, Japan
| | - Junji Ikeda
- Department of Medicine (Neurology & Rheumatology), Shinshu University School of Medicine, Japan
| | - Shohei Takayama
- Department of Medicine (Neurology & Rheumatology), Shinshu University School of Medicine, Japan
| | - Minori Kodaira
- Department of Medicine (Neurology & Rheumatology), Shinshu University School of Medicine, Japan
| | - Tomoki Kosho
- Center for Medical Genetics, Shinshu University Hospital, Japan
- Department of Medical Genetics, Shinshu University School of Medicine, Japan
| | - Yutaka Takumi
- Department of Otorhinolaryngology Head and Neck Surgery, Shinshu University School of Medicine, Japan
| | - Naomichi Matsumoto
- Department of Human Genetics, Yokohama City University Graduate School of Medicine, Japan
| | - Yoshiki Sekijima
- Department of Medicine (Neurology & Rheumatology), Shinshu University School of Medicine, Japan
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9
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Zoullas S, Morel D, Zafeer F, Borjas-Mendoza P, Angeli S, Zhou Y, Bademci G, Tekin M. Two novel heterozygous exonic deletions lead to Chanarin-Dorfman syndrome in a patient with congenital ichthyosis, sensorineural hearing loss, and liver dysfunction. Am J Med Genet A 2024; 194:e63481. [PMID: 37984424 DOI: 10.1002/ajmg.a.63481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 11/07/2023] [Accepted: 11/10/2023] [Indexed: 11/22/2023]
Abstract
Chanarin-Dorfman syndrome is an autosomal recessively inherited disorder characterized by ichthyosis, sensorineural hearing loss, and hepatic dysfunction. We report on a 60-year-old female of Venezuelan descent who presented with congenital ichthyosis, progressive sensorineural hearing loss, and liver cirrhosis. We identify a heterozygous copy number deletion involving exon 1 and another heterozygous deletion involving exon 3 of the ABHD5 gene. Exon 2 is preserved. Both deletions were confirmed with RT-PCR. RNAseq from peripheral blood shows a reduction of ABHD5 expression overall and an absence of exon 3 expression, confirming the deleterious effects of the identified deletions. We present exonic deletions as a potentially common type of ABHD5 variation.
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Affiliation(s)
- Sofia Zoullas
- Dr. John T. Macdonald Foundation, Department of Human Genetics, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Dayna Morel
- Dr. John T. Macdonald Foundation, Department of Human Genetics, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Faraz Zafeer
- Dr. John T. Macdonald Foundation, Department of Human Genetics, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Paulo Borjas-Mendoza
- Dr. John T. Macdonald Foundation, Department of Human Genetics, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Simon Angeli
- Department of Otolaryngology, University of Miami, Miami, Florida, USA
| | - Yi Zhou
- Department of Pathology, University of Miami, Miami, Florida, USA
| | - Guney Bademci
- Dr. John T. Macdonald Foundation, Department of Human Genetics, Miller School of Medicine, University of Miami, Miami, Florida, USA
| | - Mustafa Tekin
- Dr. John T. Macdonald Foundation, Department of Human Genetics, Miller School of Medicine, University of Miami, Miami, Florida, USA
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10
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Pu K, Li L, Qiu Y, Song H. Lipids and sudden sensorineural hearing loss: A bidirectional two-sample Mendelian randomization analysis. Auris Nasus Larynx 2024; 51:365-370. [PMID: 37993362 DOI: 10.1016/j.anl.2023.11.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/23/2023] [Accepted: 11/15/2023] [Indexed: 11/24/2023]
Abstract
OBJECTIVE While numerous observational studies have indicated an association between lipids and Sudden Sensorineural Hearing Loss (SSNHL), it remains uncertain whether dyslipidemia serves as a causal risk factor for SSNHL. Our objective is to elucidate the potential causal relationship between lipid levels and SSNHL through Mendelian randomization analysis. METHODS The primary and secondary lipid data used in this study were sourced from the UK Biobank (UKBB) and the Global Lipid Genetics Consortium results (GLGC), respectively. These datasets were obtained from large, publicly available genome-wide association studies (GWAS). The outcome data for sudden sensorineural hearing loss (SSNHL) were acquired from the Finnegan Biobank, consisting of 1491 cases and 196,592 controls. Subsequently, both single-variable Mendelian randomization (SVMR) and multivariate Mendelian randomization (MVMR) methods were employed to evaluate the causal relationship between lipids and the occurrence of SSNHL. RESULTS Among the primary lipid data, SVMR analysis showed a significant correlation between high density lipoprotein cholesterol (HDL-C) (OR: 0.822, 95 %CI: 0.694-0.974, p = 0.023) and SSNHL, and triglycerides (TG) (OR: 0.997, 95 %CI: 0.836-1.188, p = 0.975), low density lipoprotein cholesterol (LDL-C) (OR: 1.067, 95 %CI: 0.861-1.322, p = 0.552) did not correlate with SSNHL. In the secondary lipid data, SVMR analysis showed that HDL-C (OR: 0.987, 95 %CI: 0.805-1.210, p = 0.903), TG (OR: 0.991, 95 %CI: 0.787-1.246, p = 0.937) and LDL-C (OR: 1.092, 95 % CI: 0.926-1.287, p = 0.294) did not correlate with SSNHL. MVMR analysis of the primary lipid data showed that HDL-cholesterol (OR: 0.755, 95 % CI: 0.596-0.956, p = 0.019) was significantly associated with SSNHL, while TG (OR: 0.808, 95 %CI: 0.611-1.068, p = 0.134) and LDL-C (OR: 1.146, 95 %CI: 0.869-1.511, p = 0.333) did not correlate with SSNHL, consistent with the results of SVMR. Inverse MR results showed that SSNHL did not correlate with TG (OR: 0.999, 95 %CI: 0.997-1.001, p = 0.835), HDL-C (OR: 1.001, 95 %CI: 0.998-1.003), LDL-C (OR: 0.999, 95 %CI: 0.997-1.002, p = 0.863). CONCLUSIONS Mendelian randomization (MR) results suggest that decreased serum HDL-C levels are an independent risk factor for SSNHL. Monitoring and focusing on lipid levels may be of value in the prevention and treatment of SSNHL.
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Affiliation(s)
- Kunlin Pu
- Department of Otorhinolaryngology, Pengzhou Hospital of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Li Li
- Department of Otorhinolaryngology, Pengzhou Hospital of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Yan Qiu
- College of Clinical Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Hongmei Song
- Department of Otorhinolaryngology, Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China.
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11
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Soh Z, Martin H, Richards AJ, Suri M, Snead MP. Ophthalmic manifestations of Czech dysplasia. Am J Med Genet A 2024; 194:e63480. [PMID: 37982325 DOI: 10.1002/ajmg.a.63480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 10/21/2023] [Accepted: 11/10/2023] [Indexed: 11/21/2023]
Abstract
Czech dysplasia is an autosomal dominant type 2 collagenopathy that is caused by heterozygosity for the recurrent p.(Arg275Cys) COL2A1 variant. Affected individuals usually present with skeletal abnormalities such as metatarsal hypoplasia of the third and fourth toes and early-onset arthropathy, as well as hearing loss. To date, no ophthalmic findings have been reported in patients with Czech dysplasia even though COL2A1 has been implicated in other ocular conditions such as type 1 Stickler syndrome. For the first time, we report the ocular findings in four families with Czech dysplasia, including type 1 vitreous anomaly, hypoplastic vitreous, retinal tears, and significant refractive error. These novel ocular findings expand the phenotype associated with Czech dysplasia and may aid clinicians as an additional diagnostic feature. Patients with congenital abnormalities of vitreous gel architecture have an increased risk of retinal detachment, and as such, patients may benefit from prophylaxis. Considering that many of the patients did not report any ocular symptoms, vitreous phenotyping is of key importance in identifying the need for counseling with regard to prophylaxis.
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Affiliation(s)
- Zack Soh
- Vitreoretinal Research Group, John van Geest Centre for Brain Repair, University of Cambridge, Cambridge, UK
| | - Howard Martin
- Vitreoretinal Research Group, John van Geest Centre for Brain Repair, University of Cambridge, Cambridge, UK
| | - Allan J Richards
- Vitreoretinal Research Group, John van Geest Centre for Brain Repair, University of Cambridge, Cambridge, UK
| | - Mohnish Suri
- Nottingham Clinical Genetics Service, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - Martin P Snead
- Vitreoretinal Research Group, John van Geest Centre for Brain Repair, University of Cambridge, Cambridge, UK
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12
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Takai S, Adachi M, Takahashi H, Shirakura M, Honkura Y, Yamauchi D, Katori Y. HDR syndrome, detected in the neonatal period by newborn hearing screening. Auris Nasus Larynx 2024; 51:406-410. [PMID: 37640596 DOI: 10.1016/j.anl.2023.08.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 08/16/2023] [Accepted: 08/21/2023] [Indexed: 08/31/2023]
Abstract
Hypoparathyroidism, deafness, and renal dysplasia (HDR) syndrome is an autosomal dominant disorder. Because HDR syndrome is caused by haploinsufficiency in GATA3, it exhibits variation in the onset and progression of hearing loss. In previous reports, the automated auditory brainstem response (AABR) was considered insufficient to detect sensorineural hearing loss caused by HDR syndrome. We report a case of HDR syndrome whose congenital hearing loss was detected by newborn hearing screening (NHS) using AABR. In this case, HDR syndrome was suspected due to hearing loss, hypocalcemia, and her family history. Genetic testing confirmed the diagnosis of HDR syndrome at 5 months of age. Because the phenotype of hearing loss due to HDR syndrome is variable and includes progressive hearing loss, these cases may not be detected by the HNS. However, most of the previous reports were published before the NHS became common and given the frequency of hearing loss complications in HDR syndrome. We consider that there is a reasonable number of HDR syndrome cases with abnormalities on the NHS. We believe that the NHS may also be useful for early detection of hearing loss due to HDR syndrome.
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Affiliation(s)
- Shunsuke Takai
- Department of Otolaryngology-Head and Neck Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8574, Japan.
| | - Mika Adachi
- Department of Otolaryngology-Head and Neck Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8574, Japan
| | - Hiyori Takahashi
- Department of Otolaryngology-Head and Neck Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8574, Japan
| | - Masayuki Shirakura
- Department of Otolaryngology-Head and Neck Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8574, Japan
| | - Yohei Honkura
- Department of Otolaryngology-Head and Neck Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8574, Japan
| | - Daisuke Yamauchi
- Department of Otolaryngology-Head and Neck Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8574, Japan
| | - Yukio Katori
- Department of Otolaryngology-Head and Neck Surgery, Tohoku University Graduate School of Medicine, 1-1 Seiryo-machi, Aoba-ku, Sendai, Miyagi, 980-8574, Japan
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13
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Kapil I, Anand R, Padhi P. Perrault syndrome: The Way Forward After Genetic Counselling? BMJ Case Rep 2024; 17:e258204. [PMID: 38553020 PMCID: PMC10982697 DOI: 10.1136/bcr-2023-258204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/02/2024] Open
Abstract
A female, term neonate, born via vaginal delivery to a G5P1D1A3 hypothyroid mother with a history of an elder sibling being homozygous for HSD17B4 mutation, diagnosed while working up his progressive neurological disorder and succumbing to the same. The family screening revealed that both parents were heterozygous carriers of the same mutation in the gene HSD17B4 After genetic counselling, amniocentesis revealed the fetus to be having homozygosity for the same mutation. In view of precious pregnancy, normal antenatal scans and investigations, the pregnancy was continued, and baby was born with a birth weight of 2.65 kg and had a smooth perinatal transition. Parents were counselled regarding the course of the illness, possible complications and the need for regular follow-up. Ultrasound of the abdomen, pelvis and head was normal in the neonatal period. She was vaccinated as per the national schedule and gaining weight normally.
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Affiliation(s)
- Ishan Kapil
- Pediatrics, All India Institute of Medical Sciences, Raipur, Chhattisgarh, India
| | - Rohit Anand
- Neonatology, All India Institute of Medical Sciences, Raipur, Chhattisgarh, India
| | - Phalguni Padhi
- Neonatology, All India Institute of Medical Sciences, Raipur, Chhattisgarh, India
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14
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Wang X, Liu TX, Zhang Y, Xu LW, Yuan SL, Cui AL, Guo WW, Wang YF, Yang SM, Zhao JG. Genetically modified pigs: Emerging animal models for hereditary hearing loss. Zool Res 2024; 45:284-291. [PMID: 38485498 PMCID: PMC11017082 DOI: 10.24272/j.issn.2095-8137.2023.231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 12/05/2023] [Indexed: 03/19/2024] Open
Abstract
Hereditary hearing loss (HHL), a genetic disorder that impairs auditory function, significantly affects quality of life and incurs substantial economic losses for society. To investigate the underlying causes of HHL and evaluate therapeutic outcomes, appropriate animal models are necessary. Pigs have been extensively used as valuable large animal models in biomedical research. In this review, we highlight the advantages of pig models in terms of ear anatomy, inner ear morphology, and electrophysiological characteristics, as well as recent advancements in the development of distinct genetically modified porcine models of hearing loss. Additionally, we discuss the prospects, challenges, and recommendations regarding the use pig models in HHL research. Overall, this review provides insights and perspectives for future studies on HHL using porcine models.
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Affiliation(s)
- Xiao Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing 100101, China
- State Key Laboratory of Animal Biotech Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Tian-Xia Liu
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ying Zhang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing 100101, China
| | - Liang-Wei Xu
- Department of Otolaryngology-Head and Neck Surgery, Institute of Otolaryngology, Chinese PLA General Hospital, Beijing 100853, China
| | - Shuo-Long Yuan
- Department of Otolaryngology-Head and Neck Surgery, Institute of Otolaryngology, Chinese PLA General Hospital, Beijing 100853, China
| | - A-Long Cui
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui 230022, China
| | - Wei-Wei Guo
- Department of Otolaryngology-Head and Neck Surgery, Institute of Otolaryngology, Chinese PLA General Hospital, Beijing 100853, China
| | - Yan-Fang Wang
- State Key Laboratory of Animal Biotech Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Shi-Ming Yang
- Department of Otolaryngology-Head and Neck Surgery, Institute of Otolaryngology, Chinese PLA General Hospital, Beijing 100853, China. E-mail:
| | - Jian-Guo Zhao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China
- Savaid Medical School, University of Chinese Academy of Sciences, Beijing 100049, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing 100101, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing 100101, China. E-mail:
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15
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Zuo B, Wang LL, Mao L, Xu GE, Sun SP, Lu W. [Analysis of phenotype and pathogenic variant in a case of Heimler syndrome]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2024; 59:249-252. [PMID: 38561264 DOI: 10.3760/cma.j.cn115330-20240117-00033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Affiliation(s)
- B Zuo
- Department of Otorhinolaryngology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - L L Wang
- Department of Otorhinolaryngology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - L Mao
- Precision Medicine Center, Academy of Medical Sciences, Zhengzhou University, Zhengzhou 450052, China
| | - G E Xu
- Precision Medicine Center, Academy of Medical Sciences, Zhengzhou University, Zhengzhou 450052, China
| | - S P Sun
- Department of Otorhinolaryngology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - W Lu
- Department of Otorhinolaryngology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
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16
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Ikeuchi M, Inoue M, Miyahara H, Sebastian WA, Miyazaki S, Takeno T, Kiyota K, Yano S, Shiraishi H, Shimizu N, Hanada R, Yoshimura A, Ihara K, Hanada T. A pH imbalance is linked to autophagic dysregulation of inner ear hair cells in Atp6v1ba-deficient zebrafish. Biochem Biophys Res Commun 2024; 699:149551. [PMID: 38277730 DOI: 10.1016/j.bbrc.2024.149551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2024] [Accepted: 01/17/2024] [Indexed: 01/28/2024]
Abstract
V-ATPase is an ATP hydrolysis-driven proton pump involved in the acidification of intracellular organelles and systemic acid-base homeostasis through H+ secretion in the renal collecting ducts. V-ATPase dysfunction is associated with hereditary distal renal tubular acidosis (dRTA). ATP6V1B1 encodes the B1 subunit of V-ATPase that is integral to ATP hydrolysis and subsequent H+ transport. Patients with pathogenic ATP6V1B1 mutations often exhibit an early onset of sensorineural hearing loss. However, the mechanisms underlying this association remain unclear. We employed morpholino oligonucleotide-mediated knockdown and CRISPR/Cas9 gene editing to generate Atp6v1ba-deficient (atp6v1ba-/-) zebrafish as an ortholog model for ATP6V1B1. The atp6v1ba-/- zebrafish exhibited systemic acidosis and significantly smaller otoliths compared to wild-type siblings. Moreover, deficiency in Atp6v1ba led to degeneration of inner ear hair cells, with ultrastructural changes indicative of autophagy. Our findings indicate a critical role of ATP6V1B1 in regulating lysosomal pH and autophagy in hair cells, and the results provide insights into the pathophysiology of sensorineural hearing loss in dRTA. Furthermore, this study demonstrates that the atp6v1ba-/- zebrafish model is a valuable tool for further investigation into disease mechanisms and potential therapies for acidosis-related hearing impairment.
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Affiliation(s)
- Mayo Ikeuchi
- Department of Cell Biology, Oita University Faculty of Medicine, Yufu, Oita, Japan; Department of Pediatrics, Oita University Faculty of Medicine, Yufu, Oita, Japan
| | - Masanori Inoue
- Department of Pediatrics, Oita University Faculty of Medicine, Yufu, Oita, Japan
| | - Hiroaki Miyahara
- Department of Neuropathology, Institute for Medical Science of Aging, Aichi Medical University, Aichi, Japan
| | | | - Shuya Miyazaki
- Department of Cell Biology, Oita University Faculty of Medicine, Yufu, Oita, Japan
| | - Takashi Takeno
- Department of Cell Biology, Oita University Faculty of Medicine, Yufu, Oita, Japan
| | - Kyoko Kiyota
- Department of Cell Biology, Oita University Faculty of Medicine, Yufu, Oita, Japan; Department of Pediatrics, Oita University Faculty of Medicine, Yufu, Oita, Japan
| | - Shinji Yano
- Institute for Research Management, Oita University, Yufu, Oita, Japan
| | - Hiroshi Shiraishi
- Department of Cell Biology, Oita University Faculty of Medicine, Yufu, Oita, Japan
| | - Nobuyuki Shimizu
- Department of Cell Biology, Oita University Faculty of Medicine, Yufu, Oita, Japan
| | - Reiko Hanada
- Department of Neurophysiology, Oita University Faculty of Medicine, Yufu, Oita, Japan
| | - Akihiko Yoshimura
- Department of Microbiology and Immunology, Keio University School of Medicine, Tokyo, Japan
| | - Kenji Ihara
- Department of Pediatrics, Oita University Faculty of Medicine, Yufu, Oita, Japan
| | - Toshikatsu Hanada
- Department of Cell Biology, Oita University Faculty of Medicine, Yufu, Oita, Japan.
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17
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Qi J, Tan F, Zhang L, Lu L, Zhang S, Zhai Y, Lu Y, Qian X, Dong W, Zhou Y, Zhang Z, Yang X, Jiang L, Yu C, Liu J, Chen T, Wu L, Tan C, Sun S, Song H, Shu Y, Xu L, Gao X, Li H, Chai R. AAV-Mediated Gene Therapy Restores Hearing in Patients with DFNB9 Deafness. Adv Sci (Weinh) 2024; 11:e2306788. [PMID: 38189623 PMCID: PMC10953563 DOI: 10.1002/advs.202306788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Revised: 11/18/2023] [Indexed: 01/09/2024]
Abstract
Mutations in OTOFERLIN (OTOF) lead to the autosomal recessive deafness 9 (DFNB9). The efficacy of adeno-associated virus (AAV)-mediated OTOF gene replacement therapy is extensively validated in Otof-deficient mice. However, the clinical safety and efficacy of AAV-OTOF is not reported. Here, AAV-OTOF is generated using good manufacturing practice and validated its efficacy and safety in mouse and non-human primates in order to determine the optimal injection dose, volume, and administration route for clinical trials. Subsequently, AAV-OTOF is delivered into one cochlea of a 5-year-old deaf patient and into the bilateral cochleae of an 8-year-old deaf patient with OTOF mutations. Obvious hearing improvement is detected by the auditory brainstem response (ABR) and the pure-tone audiometry (PTA) in these two patients. Hearing in the injected ear of the 5-year-old patient can be restored to the normal range at 1 month after AAV-OTOF injection, while the 8-year-old patient can hear the conversational sounds. Most importantly, the 5-year-old patient can hear and recognize speech only through the AAV-OTOF-injected ear. This study is the first to demonstrate the safety and efficacy of AAV-OTOF in patients, expands and optimizes current OTOF-related gene therapy and provides valuable information for further application of gene therapies for deafness.
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Affiliation(s)
- Jieyu Qi
- State Key Laboratory of Digital Medical EngineeringDepartment of Otolaryngology Head and Neck SurgeryZhongda HospitalSchool of Life Sciences and TechnologySchool of MedicineAdvanced Institute for Life and HealthJiangsu Province High‐Tech Key Laboratory for Bio‐Medical ResearchSoutheast UniversityNanjing210096China
- Co‐Innovation Center of NeuroregenerationNantong UniversityNantong226001China
- Department of Neurology, Aerospace Center Hospital, School of Life ScienceBeijing Institute of TechnologyBeijing100081China
| | - Fangzhi Tan
- State Key Laboratory of Digital Medical EngineeringDepartment of Otolaryngology Head and Neck SurgeryZhongda HospitalSchool of Life Sciences and TechnologySchool of MedicineAdvanced Institute for Life and HealthJiangsu Province High‐Tech Key Laboratory for Bio‐Medical ResearchSoutheast UniversityNanjing210096China
| | - Liyan Zhang
- State Key Laboratory of Digital Medical EngineeringDepartment of Otolaryngology Head and Neck SurgeryZhongda HospitalSchool of Life Sciences and TechnologySchool of MedicineAdvanced Institute for Life and HealthJiangsu Province High‐Tech Key Laboratory for Bio‐Medical ResearchSoutheast UniversityNanjing210096China
| | - Ling Lu
- Department of Otolaryngology‐Head and Neck Surgerythe Affiliated Drum Tower Hospital of Nanjing University Medical SchoolJiangsu Provincial Key Medical Discipline (Laboratory)Nanjing210008China
| | | | - Yabo Zhai
- School of MedicineSoutheast UniversityNanjing210009China
| | - Yicheng Lu
- State Key Laboratory of Digital Medical EngineeringDepartment of Otolaryngology Head and Neck SurgeryZhongda HospitalSchool of Life Sciences and TechnologySchool of MedicineAdvanced Institute for Life and HealthJiangsu Province High‐Tech Key Laboratory for Bio‐Medical ResearchSoutheast UniversityNanjing210096China
| | - Xiaoyun Qian
- Department of Otolaryngology‐Head and Neck Surgerythe Affiliated Drum Tower Hospital of Nanjing University Medical SchoolJiangsu Provincial Key Medical Discipline (Laboratory)Nanjing210008China
| | | | - Yinyi Zhou
- State Key Laboratory of Digital Medical EngineeringDepartment of Otolaryngology Head and Neck SurgeryZhongda HospitalSchool of Life Sciences and TechnologySchool of MedicineAdvanced Institute for Life and HealthJiangsu Province High‐Tech Key Laboratory for Bio‐Medical ResearchSoutheast UniversityNanjing210096China
| | - Ziyu Zhang
- State Key Laboratory of Digital Medical EngineeringDepartment of Otolaryngology Head and Neck SurgeryZhongda HospitalSchool of Life Sciences and TechnologySchool of MedicineAdvanced Institute for Life and HealthJiangsu Province High‐Tech Key Laboratory for Bio‐Medical ResearchSoutheast UniversityNanjing210096China
| | - Xuehan Yang
- State Key Laboratory of Digital Medical EngineeringDepartment of Otolaryngology Head and Neck SurgeryZhongda HospitalSchool of Life Sciences and TechnologySchool of MedicineAdvanced Institute for Life and HealthJiangsu Province High‐Tech Key Laboratory for Bio‐Medical ResearchSoutheast UniversityNanjing210096China
| | - Lulu Jiang
- Otovia Therapeutics IncSuzhou215101China
| | | | | | - Tian Chen
- State Key Laboratory of Digital Medical EngineeringDepartment of Otolaryngology Head and Neck SurgeryZhongda HospitalSchool of Life Sciences and TechnologySchool of MedicineAdvanced Institute for Life and HealthJiangsu Province High‐Tech Key Laboratory for Bio‐Medical ResearchSoutheast UniversityNanjing210096China
| | - Lianqiu Wu
- Otovia Therapeutics IncSuzhou215101China
| | - Chang Tan
- Otovia Therapeutics IncSuzhou215101China
| | - Sijie Sun
- Otovia Therapeutics IncSuzhou215101China
- Fosun Health CapitalShanghai200233China
| | | | - Yilai Shu
- ENT Institute and Department of OtorhinolaryngologyEye & ENT HospitalState Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceFudan UniversityShanghai200031China
- Institute of Biomedical ScienceFudan UniversityShanghai200032China
- NHC Key Laboratory of Hearing MedicineFudan UniversityShanghai200032China
| | - Lei Xu
- Department of Otolaryngology‐Head and Neck SurgeryShandong Provincial ENT HospitalShandong UniversityJinanShandong250022China
| | - Xia Gao
- Department of Otolaryngology‐Head and Neck Surgerythe Affiliated Drum Tower Hospital of Nanjing University Medical SchoolJiangsu Provincial Key Medical Discipline (Laboratory)Nanjing210008China
| | - Huawei Li
- ENT Institute and Department of OtorhinolaryngologyEye & ENT HospitalState Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain ScienceFudan UniversityShanghai200031China
- Institute of Biomedical ScienceFudan UniversityShanghai200032China
- NHC Key Laboratory of Hearing MedicineFudan UniversityShanghai200032China
- The Institutes of Brain Science and the Collaborative Innovation Center for Brain ScienceFudan UniversityShanghai200032China
| | - Renjie Chai
- State Key Laboratory of Digital Medical EngineeringDepartment of Otolaryngology Head and Neck SurgeryZhongda HospitalSchool of Life Sciences and TechnologySchool of MedicineAdvanced Institute for Life and HealthJiangsu Province High‐Tech Key Laboratory for Bio‐Medical ResearchSoutheast UniversityNanjing210096China
- Co‐Innovation Center of NeuroregenerationNantong UniversityNantong226001China
- Department of Neurology, Aerospace Center Hospital, School of Life ScienceBeijing Institute of TechnologyBeijing100081China
- Department of Otolaryngology Head and Neck SurgerySichuan Provincial People's HospitalUniversity of Electronic Science and Technology of ChinaChengdu610072China
- Southeast University Shenzhen Research InstituteShenzhen518063China
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18
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Redfield SE, De-la-Torre P, Zamani M, Wang H, Khan H, Morris T, Shariati G, Karimi M, Kenna MA, Seo GH, Xu H, Lu W, Naz S, Galehdari H, Indzhykulian AA, Shearer AE, Vona B. PKHD1L1, a gene involved in the stereocilia coat, causes autosomal recessive nonsyndromic hearing loss. Hum Genet 2024; 143:311-329. [PMID: 38459354 PMCID: PMC11043200 DOI: 10.1007/s00439-024-02649-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 01/21/2024] [Indexed: 03/10/2024]
Abstract
Identification of genes associated with nonsyndromic hearing loss is a crucial endeavor given the substantial number of individuals who remain without a diagnosis after even the most advanced genetic testing. PKHD1L1 was established as necessary for the formation of the cochlear hair-cell stereociliary coat and causes hearing loss in mice and zebrafish when mutated. We sought to determine if biallelic variants in PKHD1L1 also cause hearing loss in humans. Exome sequencing was performed on DNA of four families segregating autosomal recessive nonsyndromic sensorineural hearing loss. Compound heterozygous p.[(Gly129Ser)];p.[(Gly1314Val)] and p.[(Gly605Arg)];p[(Leu2818TyrfsTer5)], homozygous missense p.(His2479Gln) and nonsense p.(Arg3381Ter) variants were identified in PKHD1L1 that were predicted to be damaging using in silico pathogenicity prediction methods. In vitro functional analysis of two missense variants was performed using purified recombinant PKHD1L1 protein fragments. We then evaluated protein thermodynamic stability with and without the missense variants found in one of the families and performed a minigene splicing assay for another variant. In silico molecular modeling using AlphaFold2 and protein sequence alignment analysis were carried out to further explore potential variant effects on structure. In vitro functional assessment indicated that both engineered PKHD1L1 p.(Gly129Ser) and p.(Gly1314Val) mutant constructs significantly reduced the folding and structural stabilities of the expressed protein fragments, providing further evidence to support pathogenicity of these variants. Minigene assay of the c.1813G>A p.(Gly605Arg) variant, located at the boundary of exon 17, revealed exon skipping leading to an in-frame deletion of 48 amino acids. In silico molecular modeling exposed key structural features that might suggest PKHD1L1 protein destabilization. Multiple lines of evidence collectively associate PKHD1L1 with nonsyndromic mild-moderate to severe sensorineural hearing loss. PKHD1L1 testing in individuals with mild-moderate hearing loss may identify further affected families.
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Affiliation(s)
- Shelby E Redfield
- Department of Otolaryngology and Communication Enhancement, Boston Children's Hospital, 300 Longwood Avenue, BCH-3129, Boston, MA, 02115, USA
| | - Pedro De-la-Torre
- Mass Eye and Ear, Eaton Peabody Laboratories, Boston, MA, USA
- Department of Otolaryngology Head and Neck Surgery, Harvard Medical School, 25 Shattuck Street, Boston, MA, 02115, USA
| | - Mina Zamani
- Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
- Narges Medical Genetics and Prenatal Diagnosis Laboratory, Kianpars, Ahvaz, Iran
| | - Hanjun Wang
- Precision Medicine Center, Academy of Medical Science, Zhengzhou University, No. 40 Daxuebei Road, Zhengzhou, 450052, China
| | - Hina Khan
- School of Biological Sciences, University of the Punjab, Quaid-e-Azam Campus, Lahore, 54590, Pakistan
| | - Tyler Morris
- Mass Eye and Ear, Eaton Peabody Laboratories, Boston, MA, USA
| | - Gholamreza Shariati
- Narges Medical Genetics and Prenatal Diagnosis Laboratory, Kianpars, Ahvaz, Iran
- Department of Medical Genetics, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Majid Karimi
- Khuzestan Cochlear Implantation Center (Tabassom), Ahvaz, Iran
| | - Margaret A Kenna
- Department of Otolaryngology and Communication Enhancement, Boston Children's Hospital, 300 Longwood Avenue, BCH-3129, Boston, MA, 02115, USA
- Mass Eye and Ear, Eaton Peabody Laboratories, Boston, MA, USA
| | | | - Hongen Xu
- Precision Medicine Center, Academy of Medical Science, Zhengzhou University, No. 40 Daxuebei Road, Zhengzhou, 450052, China
| | - Wei Lu
- Department of Otorhinolaryngology, The First Affiliated Hospital of Zhengzhou University, No. 1 Jian-She Road, Zhengzhou, 450052, China
| | - Sadaf Naz
- School of Biological Sciences, University of the Punjab, Quaid-e-Azam Campus, Lahore, 54590, Pakistan
| | - Hamid Galehdari
- Department of Biology, Faculty of Science, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Artur A Indzhykulian
- Mass Eye and Ear, Eaton Peabody Laboratories, Boston, MA, USA.
- Department of Otolaryngology Head and Neck Surgery, Harvard Medical School, 25 Shattuck Street, Boston, MA, 02115, USA.
| | - A Eliot Shearer
- Department of Otolaryngology and Communication Enhancement, Boston Children's Hospital, 300 Longwood Avenue, BCH-3129, Boston, MA, 02115, USA.
- Department of Otolaryngology Head and Neck Surgery, Harvard Medical School, 25 Shattuck Street, Boston, MA, 02115, USA.
| | - Barbara Vona
- Institute of Human Genetics, University Medical Center Göttingen, 37073, Göttingen, Germany.
- Institute for Auditory Neuroscience and InnerEarLab, University Medical Center Göttingen, 37075, Göttingen, Germany.
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19
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Liu X, Shi L, Li E, Jia S. Associations of hearing loss and structural changes in specific cortical regions: a Mendelian randomization study. Cereb Cortex 2024; 34:bhae084. [PMID: 38494888 DOI: 10.1093/cercor/bhae084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2023] [Revised: 02/13/2024] [Accepted: 02/15/2024] [Indexed: 03/19/2024] Open
Abstract
INTRODUCTION Previous studies have suggested a correlation between hearing loss (HL) and cortical alterations, but the specific brain regions that may be affected are unknown. METHODS Genome-wide association study (GWAS) data for 3 subtypes of HL phenotypes, sensorineural hearing loss (SNHL), conductive hearing loss, and mixed hearing loss, were selected as exposures, and GWAS data for brain structure-related traits were selected as outcomes. The inverse variance weighted method was used as the main estimation method. RESULTS Negative associations were identified between genetically predicted SNHL and brain morphometric indicators (cortical surface area, cortical thickness, or volume of subcortical structures) in specific brain regions, including the bankssts (β = -0.006 mm, P = 0.016), entorhinal cortex (β = -4.856 mm2, P = 0.029), and hippocampus (β = -24.819 cm3, P = 0.045), as well as in brain regions functionally associated with visual perception, including the pericalcarine (β = -10.009 cm3, P = 0.013). CONCLUSION Adaptive changes and functional remodeling of brain structures occur in patients with genetically predicted HL. Brain regions functionally associated with auditory perception, visual perception, and memory function are the main brain regions vulnerable in HL.
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Affiliation(s)
- Xiaoduo Liu
- Department of Neurology & Innovation Center for Neurological Disorders, Xuanwu Hospital, Capital Medical University, National Center for Neurological Disorders, 45 Changchun Street, Xicheng District, Beijing, 100053, China
| | - Lubo Shi
- Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, National Clinical Research Center for Digestive Diseases, Beijing Digestive Disease Center, 95 Yong'an Road, Xicheng District, Beijing, 100050, China
| | - Enze Li
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, National Clinical Research Center for Cardiovascular Diseases, 2 Anzhen Road, Chaoyang District, Beijing, 100029, China
| | - Shuo Jia
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, National Clinical Research Center for Cardiovascular Diseases, 2 Anzhen Road, Chaoyang District, Beijing, 100029, China
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Miller MJ, Lindsey JW, Pakravan M, Charoenkijkajorn C, Samant R, Milea D, Lee AG. Progressive Optic Neuropathy in Cerebellar Ataxia, Areflexia, Optic Atrophy, and Sensorineural Hearing Loss Syndrome: The Importance of Targeted Gene Testing. J Neuroophthalmol 2024; 44:e23-e25. [PMID: 36190967 DOI: 10.1097/wno.0000000000001727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Matthew J Miller
- Baylor College of Medicine (MJM), Houston, Texas; Department of Neurology (JWL, RS), University of Texas-Houston, Houston, Texas; Department of Ophthalmology (MP, CC, AGL), Blanton Eye Institute, Houston Methodist Hospital, Houston, Texas; Department of Ophthalmology (AGL), University of Texas Medical Branch, Galveston, Texas; University of Texas MD Anderson Cancer Center (AGL), Houston, Texas; Texas A and M College of Medicine (AGL), Bryan, Texas; Department of Ophthalmology (AGL), The University of Iowa Hospitals and Clinics, Iowa City, Iowa; Singapore National Eye Center (DM), Singapore Eye Research Institute, Duke-NUS Medical School, Singapore; and Departments of Ophthalmology (AGL), Neurology, and Neurosurgery, Weill Cornell Medicine, New York, New York
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21
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Koleilat A, Poling GL, Schimmenti LA, Hasadsri L. The Importance of Mitochondrial Disease Testing in Young Adults With New Onset Sensorineural Hearing Loss. Ear Hear 2024; 45:517-521. [PMID: 37930162 DOI: 10.1097/aud.0000000000001442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2023]
Abstract
OBJECTIVES Sensorineural hearing loss (SNHL) occurs commonly as part of mitochondriopathies and varies in severity and onset. In this study, we characterized hearing with specific consideration for hearing loss as a potential early indicator of mitochondrial disease (MD). We hypothesize that genetic testing at the earliest detection of SNHL may lead to an earlier MD diagnosis. DESIGN We reviewed the clinical and audiometric data of 49 patients undergoing genetic testing for MD. RESULTS One-third of individuals with molecularly confirmed MD presented with SNHL. On average, patients had hearing loss at least 10 years before genetic testing. The collective audiometric profile includes mild to moderate SNHL at lower frequencies and moderate SNHL at 2 kHz and higher frequencies. CONCLUSIONS This study suggests that screening for SNHL could be an early indicator of MD. We propose that the audiometric profile for those with a MD diagnosis may have clinical triage utility.
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Affiliation(s)
- Alaa Koleilat
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
| | - Gayla L Poling
- Division of Audiology, Department of Otolaryngology-Head and Neck Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Lisa A Schimmenti
- Department of Clinical Genomics, Mayo Clinic, Rochester, Minnesota, USA
| | - Linda Hasadsri
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, Minnesota, USA
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22
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Brooks D, Burke E, Lee S, Eble TN, O'Leary M, Osei-Owusu I, Rehm HL, Dhar SU, Emrick L, Bick D, Nehrebecky M, Macnamara E, Casas-Alba D, Armstrong J, Prat C, Martínez-Monseny AF, Palau F, Liu P, Adams D, Lalani S, Rosenfeld JA, Burrage LC. Heterozygous MAP3K20 variants cause ectodermal dysplasia, craniosynostosis, sensorineural hearing loss, and limb anomalies. Hum Genet 2024; 143:279-291. [PMID: 38451290 DOI: 10.1007/s00439-024-02657-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Accepted: 02/13/2024] [Indexed: 03/08/2024]
Abstract
Biallelic pathogenic variants in MAP3K20, which encodes a mitogen-activated protein kinase, are a rare cause of split-hand foot malformation (SHFM), hearing loss, and nail abnormalities or congenital myopathy. However, heterozygous variants in this gene have not been definitively associated with a phenotype. Here, we describe the phenotypic spectrum associated with heterozygous de novo variants in the linker region between the kinase domain and leucine zipper domain of MAP3K20. We report five individuals with diverse clinical features, including craniosynostosis, limb anomalies, sensorineural hearing loss, and ectodermal dysplasia-like phenotypes who have heterozygous de novo variants in this specific region of the gene. These individuals exhibit both shared and unique clinical manifestations, highlighting the complexity and variability of the disorder. We propose that the involvement of MAP3K20 in endothelial-mesenchymal transition provides a plausible etiology of these features. Together, these findings characterize a disorder that both expands the phenotypic spectrum associated with MAP3K20 and highlights the need for further studies on its role in early human development.
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Affiliation(s)
- Daniel Brooks
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Elizabeth Burke
- NIH Undiagnosed Diseases Program, Common Fund, Office of the Director, NIH and National Human Genome Research Institute, NIH, Bethesda, MD, USA
| | - Sukyeong Lee
- Verna and Marrs McLean Department of Biochemistry and Molecular Pharmacology, Baylor College of Medicine, Houston, TX, USA
- Advanced Technology Core for Macromolecular X-Ray Crystallography, Baylor College of Medicine, Houston, TX, USA
| | - Tanya N Eble
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Melanie O'Leary
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Ikeoluwa Osei-Owusu
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Heidi L Rehm
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Center for Genomic Medicine, Massachusetts General Hospital, Boston, MA, USA
| | - Shweta U Dhar
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Lisa Emrick
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA
- Department of Pediatrics, Section of Neurology and Developmental Neuroscience, Baylor College of Medicine, Houston, TX, USA
- Texas Children's Hospital, Houston, TX, USA
| | - David Bick
- Hudson Alpha Institute for Biotechnology, Huntsville, AL, USA
| | - Michelle Nehrebecky
- NIH Undiagnosed Diseases Program, Common Fund, Office of the Director, NIH and National Human Genome Research Institute, NIH, Bethesda, MD, USA
| | - Ellen Macnamara
- NIH Undiagnosed Diseases Program, Common Fund, Office of the Director, NIH and National Human Genome Research Institute, NIH, Bethesda, MD, USA
| | - Dídac Casas-Alba
- Department of Genetic Medicine, Pediatric Institute of Rare Diseases (IPER), CIBER on Rare Diseases (CIBERER), Hospital Sant Joan de DéuEsplugues de Llobregat, 08950, Barcelona, Spain
| | - Judith Armstrong
- Department of Genetic Medicine, Pediatric Institute of Rare Diseases (IPER), CIBER on Rare Diseases (CIBERER), Hospital Sant Joan de DéuEsplugues de Llobregat, 08950, Barcelona, Spain
| | - Carolina Prat
- Department of Dermatology, Hospital Sant Joan de Deu, Esplugues de Llobregat, 08950, Barcelona, Spain
| | - Antonio F Martínez-Monseny
- Department of Genetic Medicine, Pediatric Institute of Rare Diseases (IPER), CIBER on Rare Diseases (CIBERER), Hospital Sant Joan de DéuEsplugues de Llobregat, 08950, Barcelona, Spain
| | - Francesc Palau
- Department of Genetic Medicine, Pediatric Institute of Rare Diseases (IPER), CIBER on Rare Diseases (CIBERER), Hospital Sant Joan de DéuEsplugues de Llobregat, 08950, Barcelona, Spain
- Division of Pediatrics, University of Barcelona School of Medicine and Health Sciences, Barcelona, Spain
| | - Pengfei Liu
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA
- Baylor Genetics, Houston, TX, USA
| | - David Adams
- NIH Undiagnosed Diseases Program, Common Fund, Office of the Director, NIH and National Human Genome Research Institute, NIH, Bethesda, MD, USA
| | - Seema Lalani
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA
- Texas Children's Hospital, Houston, TX, USA
| | - Jill A Rosenfeld
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA.
| | - Lindsay C Burrage
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA.
- Texas Children's Hospital, Houston, TX, USA.
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23
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Gu X, Jiang K, Chen R, Chen Z, Wu X, Xiang H, Huang X, Nan B. Identification of common stria vascularis cellular alteration in sensorineural hearing loss based on ScRNA-seq. BMC Genomics 2024; 25:213. [PMID: 38413848 PMCID: PMC10897997 DOI: 10.1186/s12864-024-10122-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 02/14/2024] [Indexed: 02/29/2024] Open
Abstract
BACKGROUND The stria vascularis (SV), located in the lateral wall of the cochlea, maintains cochlear fluid homeostasis and mechanoelectrical transduction (MET) activity required for sound wave conduction. The pathogenesis of a number of human inheritable deafness syndromes, age related hearing loss, drug-induced ototoxicity and noise-induced hearing loss results from the morphological changes and functional impairments in the development of the SV. In this study, we investigate the implications of intercellular communication within the SV in the pathogenesis of sensorineural hearing loss (SNHL). We aim to identify commonly regulated signaling pathways using publicly available single-cell transcriptomic sequencing (scRNA-seq) datasets. METHODS We analyzed scRNA-seq data, which was derived from studying the cochlear SV in mice with SNHL compared to normal adult mice. After quality control and filtering, we obtained the major cellular components of the mouse cochlear SV and integrated the data. Using Seurat's FindAllMarkers and FindMarkers packages, we searched for novel conservative genes and differential genes. We employed KEGG and GSEA to identify molecular pathways that are commonly altered among different types of SNHL. We utilized pySCENIC to discover new specific regulatory factors in SV subpopulation cells. With the help of CellChat, we identified changes in subpopulation cells showing similar trends across different SNHL types and their alterations in intercellular communication pathways. RESULTS Through the analysis of the integrated data, we discovered new conserved genes to SV specific cells and identified common downregulated pathways in three types of SNHL. The enriched genes for these pathways showing similar trends are primarily associated with the Electron Transport Chain, related to mitochondrial energy metabolism. Using the CellChat package, we further found that there are shared pathways in the incoming signaling of specific intermediate cells in SNHL, and these pathways have common upstream regulatory transcription factor of Nfe2l2. Combining the results from pySCENIC and CellChat, we predicted the transcription factor Nfe2l2 as an upstream regulatory factor for multiple shared cellular pathways in IC. Additionally, it serves as an upstream factor for several genes within the Electron Transport Chain. CONCLUSION Our bioinformatics analysis has revealed that downregulation of the mitochondrial electron transport chain have been observed in various conditions of SNHL. E2f1, Esrrb, Runx1, Yy1, and Gata2 could serve as novel important common TFs regulating the electron transport chain. Adm has emerged as a potential new marker gene for intermediate cells, while Itgb5 and Tesc show promise as potential new marker genes for marginal cells in the SV. These findings offer a new perspective on SV lesions in SNHL and provide additional theoretical evidence for the same drug treatment and prevention of different pathologies of SNHL.
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Affiliation(s)
- Xi Gu
- Department of Otorhinolaryngology, Head and Neck Surgery, the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Fujian Institute of Otolaryngology, the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Department of Otorhinolaryngology, Head and Neck Surgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Kanglun Jiang
- Department of Otorhinolaryngology-Head and Neck Surgery, Zhongshan Hospital, Fudan University, Fenglin Road 180, Xuhui District, Shanghai, 200030, People's Republic of China
| | - Ruru Chen
- Department of Otorhinolaryngology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Zhifeng Chen
- Department of Otorhinolaryngology, Head and Neck Surgery, the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Fujian Institute of Otolaryngology, the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
- Department of Otorhinolaryngology, Head and Neck Surgery, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou, China
| | - Xianmin Wu
- Department of Otolaryngology-Head and Neck Surgery, the First Affiliated Hospital of Wenzhou Medical University, Wenzhou, China
| | - Haijie Xiang
- Department of Otorhinolaryngology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xinsheng Huang
- Department of Otorhinolaryngology-Head and Neck Surgery, Zhongshan Hospital, Fudan University, Fenglin Road 180, Xuhui District, Shanghai, 200030, People's Republic of China.
| | - Benyu Nan
- Department of Otorhinolaryngology, the Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.
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24
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Lei P, Zhu Q, Dong W. Investigation of a novel TBC1D24 variation causing autosomal dominant non-syndromic hearing loss. Sci Rep 2024; 14:4734. [PMID: 38413761 PMCID: PMC10899226 DOI: 10.1038/s41598-024-55435-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 02/23/2024] [Indexed: 02/29/2024] Open
Abstract
Hearing loss is considered one of the most common sensory neurological defects, with approximately 60% of cases attributed to genetic factors. Human pathogenic variants in the TBC1D24 gene are associated with various clinical phenotypes, including dominant nonsyndromic hearing loss DFNA65, characterized by progressive hearing loss after the development of language. This study provides an in-depth analysis of the causative gene and mutations in a family with hereditary deafness. We recruited a three-generation family with autosomal dominant nonsyndromic hearing loss (ADNSHL) and conducted detailed medical histories and relevant examinations. Next-generation sequencing (NGS) was used to identify genetic variants in the proband, which were then validated using Sanger sequencing. Multiple computational software tools were employed to predict the impact of the variant on the function and structure of the TBC1D24 protein. A series of bioinformatics tools were applied to determine the conservation characteristics of the sequence, establish a three-dimensional structural model, and investigate changes in molecular dynamics. A detailed genotype and phenotype analysis were carried out. The family exhibited autosomal dominant, progressive, postlingual, and nonsyndromic sensorineural hearing loss. A novel heterozygous variant, c.1459C>T (p.His487Tyr), in the TBC1D24 gene was identified and confirmed to be associated with the hearing loss phenotype in this family. Conservation analysis revealed high conservation of the amino acid affected by this variant across different species. The mutant protein showed alterations in thermodynamic stability, elasticity, and conformational dynamics. Molecular dynamics simulations indicated changes in RMSD, RMSF, Rg, and SASA of the mutant structure. We computed the onset age of non-syndromic hearing loss associated with mutations in the TBC1D24 gene and identified variations in the hearing progression time and annual threshold deterioration across different frequencies. The identification of a new variant associated with rare autosomal dominant nonsyndromic hereditary hearing loss in this family broadens the range of mutations in the TBC1D24 gene. This variant has the potential to influence the interaction between the TLDc domain and TBC domain, thereby affecting the protein's biological function.
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Affiliation(s)
- Peiliang Lei
- Department of Otolaryngology Head & Neck Surgery, The Second Hospital of Hebei Medical University, Heping West Road No. 215, Shijiazhuang, 050000, Hebei, China
- Department of Otolaryngology Head & Neck Surgery, The Third Hospital of Shijiazhuang, Tiyu South Street No.15, Shijiazhuang, 050011, Hebei, China
| | - Qingwen Zhu
- Department of Otolaryngology Head & Neck Surgery, The Second Hospital of Hebei Medical University, Heping West Road No. 215, Shijiazhuang, 050000, Hebei, China.
| | - Wenrong Dong
- Department of Otolaryngology Head & Neck Surgery, The Third Hospital of Shijiazhuang, Tiyu South Street No.15, Shijiazhuang, 050011, Hebei, China
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25
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Wang Y, Liu H, Nie X, Lu N, Yan S, Wang X, Zhao Y. L-shaped association of triglyceride glucose index and sensorineural hearing loss: results from a cross-sectional study and Mendelian randomization analysis. Front Endocrinol (Lausanne) 2024; 15:1339731. [PMID: 38464969 PMCID: PMC10921358 DOI: 10.3389/fendo.2024.1339731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 02/05/2024] [Indexed: 03/12/2024] Open
Abstract
Background The association between the sensorineural hearing loss (SNHL) and triglyceride-glucose (TyG) index remains inadequately understood. This investigation seeks to elucidate the connection between the TyG index and SNHL. Methods In this cross-sectional study, we utilized datasets sourced from the National Health and Nutrition Examination Survey (NHANES). A comprehensive analysis was conducted on 1,851 participants aged 20 to 69, utilizing complete audiometry data from the NHANES database spanning from 2007 to 2018. All enrolled participants had accessible hearing data, and the average thresholds were measured and calculated as both low-frequency pure-tone average and high-frequency pure-tone average. Sensorineural hearing loss (SNHL) was defined as an average pure tone of 20 dB or higher in at least one better ear. Our analysis involved the application of multivariate linear regression models to examine the linear relationship between the TyG index and SNHL. To delineate any non-linear associations, we utilized fitted smoothing curves and conducted threshold effect analysis. Furthermore, we conducted a two-sample Mendelian randomization (MR) study, leveraging genetic data from genome-wide association studies (GWAS) on circulating lipids, blood glucose, and SNHL. The primary analytical method for the MR study was the application of the inverse-variance-weighted (IVW) approach. Results In our multivariate linear regression analysis, a substantial positive correlation emerged between the TyG index and SNHL [2.10 (1.80-2.44), p < 0.0001]. Furthermore, using a two-segment linear regression model, we found an L-shaped relationship between TyG index, fasting blood glucose and SNHL with an inflection point of 9.07 and 94 mg/dL, respectively. Specifically, TyG index [3.60, (1.42-9.14)] and blood glucose [1.01, (1.00-1.01)] concentration higher than the threshold values was positively associated with SNHL risk. Genetically determined triglyceride levels demonstrated a causal impact on SNHL (OR = 1.092, p = 8.006 × 10-4). In addition, blood glucose was found to have a protective effect on SNHL (OR = 0.886, p = 1.012 × 10-2). Conclusions An L-shaped association was identified among the TyG index, fasting blood glucose, and SNHL in the American population. TyG index of more than 9.07 and blood glucose of more than 94 mg/dL were significantly and positively associated with SNHL risk, respectively.
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Affiliation(s)
- Yixuan Wang
- Department of Otolaryngology Head and Neck Surgery, Shaanxi Provincial People’s Hospital, Xi’an, China
- Yan’an University, Yan’an, China
| | - Hui Liu
- Department of Otolaryngology Head and Neck Surgery, Shaanxi Provincial People’s Hospital, Xi’an, China
| | - Xinlin Nie
- Department of Orthopedic Center, the First Hospital of Jilin University, Changchun, China
| | - Na Lu
- Department of Otolaryngology Head and Neck Surgery, Shaanxi Provincial People’s Hospital, Xi’an, China
- Yan’an University, Yan’an, China
| | - Sheng Yan
- Department of Otolaryngology Head and Neck Surgery, Shaanxi Provincial People’s Hospital, Xi’an, China
- Yan’an University, Yan’an, China
| | - Xin Wang
- Department of Otolaryngology Head and Neck Surgery, Shaanxi Provincial People’s Hospital, Xi’an, China
| | - Yuxiang Zhao
- Department of Otolaryngology Head and Neck Surgery, Shaanxi Provincial People’s Hospital, Xi’an, China
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Papadopoulos T, Gaignard P, Schiff M, Rio M, Karall D, Legendre A, Verloes A, Ruaud L. New description of an MRPS2 homozygous patient: Further features to help expend the phenotype. Eur J Med Genet 2024; 67:104889. [PMID: 38029925 DOI: 10.1016/j.ejmg.2023.104889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 09/04/2023] [Accepted: 10/29/2023] [Indexed: 12/01/2023]
Abstract
Mutated mito-ribosomal protein S2 (MRPS2) was already described in only three subjects, two with sensorineural hearing impairment, mild developmental delay, hypoglycemia, lactic acidemia and combined oxidative phosphorylation system deficiency and another, recently, presenting with a less severe phenotype. In order to expand the phenotype, we describe a new MRPS2 homozygous subject who shows particular features which have not yet been reported: initial microcephaly, joint hypermobility and autistic features.
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Affiliation(s)
- Thalia Papadopoulos
- APHP.Nord, Robert-Debré University Hospital, Department of Genetics, F-75019, Paris, France
| | - Pauline Gaignard
- Laboratoire de Biochimie Site Bicêtre, Faculté de Pharmacie, Hôpitaux Universitaires Paris-Saclay, Centre de référence des Maladies Mitochondriales, Filière Filnemus, France; Laboratoire de biologie médicale multisites Seqoia - FMG2025, Paris, France
| | - Manuel Schiff
- Necker Hospital, APHP, Reference Center for Inborn Error of Metabolism and Filière G2M, Pediatrics Department, University of Paris, Paris, France; Inserm UMR_S1163, Institut Imagine, Paris, France
| | - Marlène Rio
- Departments of Pediatrics, Neurology and Genetics, Hopital Necker Enfants-Malades, 75015, Paris, France
| | - Daniela Karall
- Clinic for Pediatrics, Inherited Metabolic Disorders, Medical University of Innsbruck, 6020, Innsbruck, Austria
| | - Adrien Legendre
- Laboratoire de biologie médicale multisites Seqoia - FMG2025, Paris, France
| | - Alain Verloes
- APHP.Nord, Robert-Debré University Hospital, Department of Genetics, F-75019, Paris, France; INSERM UMR 1141, Neurodiderot, University of Paris, F-75019, Paris, France
| | - Lyse Ruaud
- APHP.Nord, Robert-Debré University Hospital, Department of Genetics, F-75019, Paris, France; INSERM UMR 1141, Neurodiderot, University of Paris, F-75019, Paris, France.
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German RJ, Vuocolo B, Vossaert L, Owen N, Lewis RA, Saba L, Wangler MF, Nagamani S. Novel hemizygous single-nucleotide duplication in RPGR in a patient with retinal dystrophy and sensorineural hearing loss. Mol Genet Genomic Med 2024; 12:e2404. [PMID: 38404254 PMCID: PMC10895382 DOI: 10.1002/mgg3.2404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 02/02/2024] [Accepted: 02/06/2024] [Indexed: 02/27/2024] Open
Abstract
BACKGROUND The RPGR gene has been associated with X-linked cone-rod dystrophy. This report describes a variant in RPGR detected with exome sequencing (ES). Genes like RPGR have not always been included in panel-based testing and thus genome-wide tests such as ES may be required for accurate diagnosis. METHODS The Texome Project is studying the impact of ES in medically underserved patients who are in need of genomic testing to guide diagnosis and medical management. The hypothesis is that ES could uncover diagnoses not made by standard medical care. RESULTS A 58-year-old male presented with retinitis pigmentosa, sensorineural hearing loss, and a family history of retinal diseases. A previous targeted gene panel for retinal disorders had not identified a molecular cause. ES through the Texome Project identified a novel, hemizygous variant in RPGR (NM_000328.3: c.1302dup, p.L435Sfs*18) that explained the ocular phenotype. CONCLUSIONS Continued genetics evaluation can help to end diagnostic odysseys of patients. Careful consideration of genes represented when utilizing gene panels is crucial to ensure an accurate diagnosis. Medically underserved populations are less likely to receive comprehensive genetic testing in their diagnostic workup. Our report is an example of the medical impact of genomic medicine implementation.
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Affiliation(s)
- Ryan J. German
- Department of Molecular and Human GeneticsBaylor College of MedicineHoustonTexasUSA
- Jan and Dan Duncan Neurological Research InstituteTexas Children's HospitalHoustonTexasUSA
| | - Blake Vuocolo
- Department of Molecular and Human GeneticsBaylor College of MedicineHoustonTexasUSA
- Jan and Dan Duncan Neurological Research InstituteTexas Children's HospitalHoustonTexasUSA
| | - Liesbeth Vossaert
- Department of Molecular and Human GeneticsBaylor College of MedicineHoustonTexasUSA
- Baylor Genetics LaboratoriesHoustonTexasUSA
| | - Nichole Owen
- Department of Molecular and Human GeneticsBaylor College of MedicineHoustonTexasUSA
- Baylor Genetics LaboratoriesHoustonTexasUSA
| | - Richard A. Lewis
- Department of Molecular and Human GeneticsBaylor College of MedicineHoustonTexasUSA
- Department of MedicineBaylor College of MedicineHoustonTexasUSA
- Department of OphthalmologyBaylor College of MedicineHoustonTexasUSA
| | - Lisa Saba
- Department of PathologyTexas Children's HospitalHoustonTexasUSA
| | | | - Michael F. Wangler
- Department of Molecular and Human GeneticsBaylor College of MedicineHoustonTexasUSA
- Jan and Dan Duncan Neurological Research InstituteTexas Children's HospitalHoustonTexasUSA
- Texas Children's HospitalHoustonTexasUSA
| | - Sandesh Nagamani
- Department of Molecular and Human GeneticsBaylor College of MedicineHoustonTexasUSA
- Department of MedicineBaylor College of MedicineHoustonTexasUSA
- Texas Children's HospitalHoustonTexasUSA
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Verdoodt D, van Wijk E, Broekman S, Venselaar H, Aben F, Sels L, De Backer E, Gommeren H, Szewczyk K, Van Camp G, Ponsaerts P, Van Rompaey V, de Vrieze E. Rational design of a genomically humanized mouse model for dominantly inherited hearing loss, DFNA9. Hear Res 2024; 442:108947. [PMID: 38218018 DOI: 10.1016/j.heares.2023.108947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 12/04/2023] [Accepted: 12/30/2023] [Indexed: 01/15/2024]
Abstract
DFNA9 is a dominantly inherited form of adult-onset progressive hearing impairment caused by mutations in the COCH gene. COCH encodes cochlin, a crucial extracellular matrix protein. We established a genomically humanized mouse model for the Dutch/Belgian c.151C>T founder mutation in COCH. Considering upcoming sequence-specific genetic therapies, we exchanged the genomic murine Coch exons 3-6 for the corresponding human sequence. Introducing human-specific genetic information into mouse exons can be risky. To mitigate unforeseen consequences on cochlin function resulting from the introduction of the human COCH protein-coding sequence, we converted all human-specific amino acids to mouse equivalents. We furthermore optimized the recognition of the human COCH exons by the murine splicing machinery during pre-mRNA splicing. Subsequent observations in mouse embryonic stem cells revealed correct splicing of the hybrid Coch transcript. The inner ear of the established humanized Coch mice displays correctly-spliced wild-type and mutant humanized Coch alleles. For a comprehensive study of auditory function, mice were crossbred with C57BL/6 Cdh23753A>G mice to remove the Cdh23ahl allele from the genetic background of the mice. At 9 months, all humanized Coch genotypes showed hearing thresholds comparable to wild-type C57BL/6 Cdh23753A>G mice. This indicates that both the introduction of human wildtype COCH, and correction of Cdh23ahl in the humanized Coch lines was successful. Overall, our approach proved beneficial in eliminating potential adverse events of genomic humanization of mouse genes, and provides us with a model in which sequence-specific therapies directed against the human mutant COCH alle can be investigated. With the hearing and balance defects anticipated to occur late in the second year of life, a long-term follow-up study is ongoing to fully characterize the humanized Coch mouse model.
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Affiliation(s)
- Dorien Verdoodt
- Department of Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium; Laboratory of Experimental Hematology, Vaccine and Infectious Disease Institute (Vaxinfectio), University of Antwerp, Antwerp, Belgium
| | - Erwin van Wijk
- Department of Otorhinolaryngology, Hearing and Genes, Radboud University Medical Center, Nijmegen, GA 6525, the Netherlands
| | - Sanne Broekman
- Department of Otorhinolaryngology, Hearing and Genes, Radboud University Medical Center, Nijmegen, GA 6525, the Netherlands
| | - Hanka Venselaar
- Department of Medical BioSciences, Radboud University Medical Center, Nijmegen, GA 6525, the Netherlands
| | - Fien Aben
- Department of Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium; Department of Otorhinolaryngology, Hearing and Genes, Radboud University Medical Center, Nijmegen, GA 6525, the Netherlands
| | - Lize Sels
- Department of Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
| | - Evi De Backer
- Department of Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium; Department of Otorhinolaryngology and Head & Neck Surgery, Antwerp University Hospital, Antwerp, Belgium
| | - Hanne Gommeren
- Department of Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
| | - Krystyna Szewczyk
- Department of Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
| | - Guy Van Camp
- Center for Medical Genetics, University of Antwerp, Antwerp 2000, Belgium
| | - Peter Ponsaerts
- Laboratory of Experimental Hematology, Vaccine and Infectious Disease Institute (Vaxinfectio), University of Antwerp, Antwerp, Belgium
| | - Vincent Van Rompaey
- Department of Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium; Department of Otorhinolaryngology and Head & Neck Surgery, Antwerp University Hospital, Antwerp, Belgium
| | - Erik de Vrieze
- Department of Otorhinolaryngology, Hearing and Genes, Radboud University Medical Center, Nijmegen, GA 6525, the Netherlands.
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Yu K, Liu X, Yang B. The correlation between deafness progression and SLC26A4 mutations in enlarged vestibular aqueduct patients. Eur Arch Otorhinolaryngol 2024; 281:649-654. [PMID: 37477685 DOI: 10.1007/s00405-023-08123-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 07/04/2023] [Indexed: 07/22/2023]
Abstract
BACKGROUND The relationship between the hearing phenotype and the SLC26A4 mutation in enlarged vestibular aqueduct cases has not been fully elucidated. OBJECTIVES To detect SLC26A4 mutation in a group of cases with enlarged vestibular aqueduct who received cochlear implantation and to analyze the correlation between the SLC26A4 genotype and the progression of deafness. MATERIALS AND METHODS Twenty-nine enlarged vestibular aqueduct patients were selected. Using the Sanger sequence to analyze SLC26A4 gene mutations. The 29 cases were divided into group A (carrying the c.919-2A > G mutation) and group B (not carrying the c.919-2A > G mutation). The difference in the duration of deafness was analyzed between the two groups. RESULTS The detection rate of the c.1174A > T mutation in the postlingual deafness group was 37.5%, higher than that in the prelingual deafness group (0%). The difference in the duration of deafness between groups A and B was not statistically significant by the Mann-Whitney U test (p > 0.05). CONCLUSIONS The correlation between the SLC26A4 genotype and the duration of deafness in cases with enlarged vestibular aqueduct is not yet clear. However, the c.1174A > T mutation may be linked to delayed hearing loss and the progression of deafness may be relatively slow in some cases of c.919-2A > G mutation.
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Affiliation(s)
- Kejia Yu
- The Fourth Affiliated Hospital, International Institutes of Medicine, Zhejiang University School of Medicine, Yiwu, China
| | - Xiao Liu
- Department of Otorhinolaryngology, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Beibei Yang
- Department of Otorhinolaryngology, Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
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Udagawa T, Takahashi E, Tatsumi N, Mutai H, Saijo H, Kondo Y, Atkinson PJ, Matsunaga T, Yoshikawa M, Kojima H, Okabe M, Cheng AG. Loss of Pax3 causes reduction of melanocytes in the developing mouse cochlea. Sci Rep 2024; 14:2210. [PMID: 38278860 PMCID: PMC10817906 DOI: 10.1038/s41598-024-52629-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Accepted: 01/22/2024] [Indexed: 01/28/2024] Open
Abstract
Cochlear melanocytes are intermediate cells in the stria vascularis that generate endocochlear potentials required for auditory function. Human PAX3 mutations cause Waardenburg syndrome and abnormalities of skin and retinal melanocytes, manifested as congenital hearing loss (~ 70%) and hypopigmentation of skin, hair and eyes. However, the underlying mechanism of hearing loss remains unclear. Cochlear melanocytes in the stria vascularis originated from Pax3-traced melanoblasts and Plp1-traced Schwann cell precursors, both of which derive from neural crest cells. Here, using a Pax3-Cre knock-in mouse that allows lineage tracing of Pax3-expressing cells and disruption of Pax3, we found that Pax3 deficiency causes foreshortened cochlea, malformed vestibular apparatus, and neural tube defects. Lineage tracing and in situ hybridization show that Pax3+ derivatives contribute to S100+, Kir4.1+ and Dct+ melanocytes (intermediate cells) in the developing stria vascularis, all of which are significantly diminished in Pax3 mutant animals. Taken together, these results suggest that Pax3 is required for the development of neural crest cell-derived cochlear melanocytes, whose absence may contribute to congenital hearing loss of Waardenburg syndrome in humans.
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Affiliation(s)
- Tomokatsu Udagawa
- Department of Otorhinolaryngology, The Jikei University School of Medicine, 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo, 105-8461, Japan.
- Department of Anatomy, The Jikei University School of Medicine, Tokyo, Japan.
- Department of Otorhinolaryngology, Toho University School of Medicine, Tokyo, Japan.
| | - Erisa Takahashi
- Department of Otorhinolaryngology, The Jikei University School of Medicine, 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo, 105-8461, Japan
- Department of Anatomy, The Jikei University School of Medicine, Tokyo, Japan
| | - Norifumi Tatsumi
- Department of Anatomy, The Jikei University School of Medicine, Tokyo, Japan
| | - Hideki Mutai
- Division Hearing and Balance Research, National Institute of Sensory Organs, NHO Tokyo Medical Center, Tokyo, Japan
| | - Hiroki Saijo
- Department of Anatomy, The Jikei University School of Medicine, Tokyo, Japan
| | - Yuko Kondo
- Department of Otorhinolaryngology, The Jikei University School of Medicine, 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Patrick J Atkinson
- Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA, 94305, USA
| | - Tatsuo Matsunaga
- Division Hearing and Balance Research, National Institute of Sensory Organs, NHO Tokyo Medical Center, Tokyo, Japan
| | - Mamoru Yoshikawa
- Department of Otorhinolaryngology, Toho University School of Medicine, Tokyo, Japan
| | - Hiromi Kojima
- Department of Otorhinolaryngology, The Jikei University School of Medicine, 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - Masataka Okabe
- Department of Anatomy, The Jikei University School of Medicine, Tokyo, Japan
| | - Alan G Cheng
- Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, CA, 94305, USA
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Zhang L, Yang JY, Wang QQ, Gao X, Wang GJ, Han MY, Kang DY, Han DY, Huang SS, Yuan YY. MPZL2-a common autosomal recessive deafness gene related to moderate sensorineural hearing loss in the Chinese population. BMC Med Genomics 2024; 17:32. [PMID: 38254107 PMCID: PMC10804618 DOI: 10.1186/s12920-023-01786-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2023] [Accepted: 12/19/2023] [Indexed: 01/24/2024] Open
Abstract
BACKGROUND Mutations in MPZL2, the characteristic genetic etiology of autosomal recessive deafness loci 111 (DFNB111), cause non-syndromic and moderate sensorineural hearing loss. METHODS In this study, we analyzed the phenotype and genotype of eight pedigrees consisting of 10 hearing loss patients with bi-allelic pathogenic or likely pathogenic variants in MPZL2. These patients were identified from a 3272 Chinese patient cohort who underwent genetic testing. RESULTS Apart from symmetrical and moderate sensorineural hearing loss, the MPZL2-related phenotype was characterized by progressive hearing loss with variation in the onset age (congenital defect to onset at the young adult stage). We determined that in the Chinese population, the genetic load of MPZL2 defects was 0.24% (8/3272) in patients diagnosed with hearing loss and 7.02% (8/114) in patients diagnosed with hereditary moderate sensorineural hearing loss caused by STRC, OTOA, OTOG, OTOGL, TECTA, MPZL2 and others. Three known MPZL2 variants (c.220C > T (p.Gln74*), c.68delC (p.Pro23Leufs*2), c.463delG (p.Ala155Leufs*10)) and a novel start loss variant (c.3G > T (p.Met1?)) were identified. MPZL2 c.220C > T was identified as the hotspot variant in the Chinese population and even in East Asia compared with c.72delA (p.Ile24Metfs*22) in European and West Asia through allele frequency. CONCLUSIONS We concluded that apart from moderate HL, progressive HL is another character of MPZL2-related HL. No specified variant was verified for the progression of HL, the penetrance and expressivity cannot be determined yet. A novel MPZL2 variant at the start codon was identified, enriching the variant spectrum of MPZL2. The hotspot variants of MPZL2 vary in different ethnicities. This study provides valuable data for the diagnosis, prognosis evaluation and genetic counseling of patients with moderate sensorineural hearing loss related to MPZL2.
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Affiliation(s)
- Lang Zhang
- College of Otolaryngology Head and Neck Surgery, National Clinical Research Center for Otolaryngologic Diseases, Sixth Medical Center of the PLA General Hospital, Chinese PLA Medical School, 6# Fucheng Road, Beijing, 100048, China
- State Key Lab of Hearing Science, Ministry of Education, Beijing, China
- Beijing Key Lab of Hearing Impairment Prevention and Treatment, Beijing, China
| | - Jin-Yuan Yang
- College of Otolaryngology Head and Neck Surgery, National Clinical Research Center for Otolaryngologic Diseases, Sixth Medical Center of the PLA General Hospital, Chinese PLA Medical School, 6# Fucheng Road, Beijing, 100048, China
- State Key Lab of Hearing Science, Ministry of Education, Beijing, China
- Beijing Key Lab of Hearing Impairment Prevention and Treatment, Beijing, China
| | - Qiu-Quan Wang
- College of Otolaryngology Head and Neck Surgery, National Clinical Research Center for Otolaryngologic Diseases, Sixth Medical Center of the PLA General Hospital, Chinese PLA Medical School, 6# Fucheng Road, Beijing, 100048, China
- State Key Lab of Hearing Science, Ministry of Education, Beijing, China
- Beijing Key Lab of Hearing Impairment Prevention and Treatment, Beijing, China
| | - Xue Gao
- Department of Otolaryngology, PLA Rocket Force Characteristic Medical Center, 16# XinWai Da Jie, 100088, Beijing, China
| | - Guo-Jian Wang
- College of Otolaryngology Head and Neck Surgery, National Clinical Research Center for Otolaryngologic Diseases, Sixth Medical Center of the PLA General Hospital, Chinese PLA Medical School, 6# Fucheng Road, Beijing, 100048, China
- State Key Lab of Hearing Science, Ministry of Education, Beijing, China
- Beijing Key Lab of Hearing Impairment Prevention and Treatment, Beijing, China
| | - Ming-Yu Han
- College of Otolaryngology Head and Neck Surgery, National Clinical Research Center for Otolaryngologic Diseases, Sixth Medical Center of the PLA General Hospital, Chinese PLA Medical School, 6# Fucheng Road, Beijing, 100048, China
- State Key Lab of Hearing Science, Ministry of Education, Beijing, China
- Beijing Key Lab of Hearing Impairment Prevention and Treatment, Beijing, China
| | - Dong-Yang Kang
- College of Otolaryngology Head and Neck Surgery, National Clinical Research Center for Otolaryngologic Diseases, Sixth Medical Center of the PLA General Hospital, Chinese PLA Medical School, 6# Fucheng Road, Beijing, 100048, China
- State Key Lab of Hearing Science, Ministry of Education, Beijing, China
- Beijing Key Lab of Hearing Impairment Prevention and Treatment, Beijing, China
| | - Dong-Yi Han
- College of Otolaryngology Head and Neck Surgery, National Clinical Research Center for Otolaryngologic Diseases, Sixth Medical Center of the PLA General Hospital, Chinese PLA Medical School, 6# Fucheng Road, Beijing, 100048, China.
- State Key Lab of Hearing Science, Ministry of Education, Beijing, China.
- Beijing Key Lab of Hearing Impairment Prevention and Treatment, Beijing, China.
| | - Sha-Sha Huang
- College of Otolaryngology Head and Neck Surgery, National Clinical Research Center for Otolaryngologic Diseases, Sixth Medical Center of the PLA General Hospital, Chinese PLA Medical School, 6# Fucheng Road, Beijing, 100048, China.
- State Key Lab of Hearing Science, Ministry of Education, Beijing, China.
- Beijing Key Lab of Hearing Impairment Prevention and Treatment, Beijing, China.
| | - Yong-Yi Yuan
- College of Otolaryngology Head and Neck Surgery, National Clinical Research Center for Otolaryngologic Diseases, Sixth Medical Center of the PLA General Hospital, Chinese PLA Medical School, 6# Fucheng Road, Beijing, 100048, China.
- State Key Lab of Hearing Science, Ministry of Education, Beijing, China.
- Beijing Key Lab of Hearing Impairment Prevention and Treatment, Beijing, China.
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Finsterer J. Letter to the Editor: Depending on the Disease Stage and Modifying Factors, mtDNA-Associated Hearing Loss Can Occur With Many mtDNA Mutations. J Korean Med Sci 2024; 39:e41. [PMID: 38258368 PMCID: PMC10803210 DOI: 10.3346/jkms.2024.39.e41] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Accepted: 01/09/2024] [Indexed: 01/24/2024] Open
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Zheng K, Lin S, Gao J, Chen S, Su J, Liu Z, Duan S. Novel compound heterozygous MYO15A splicing variants in autosomal recessive non-syndromic hearing loss. BMC Med Genomics 2024; 17:4. [PMID: 38167320 PMCID: PMC10763153 DOI: 10.1186/s12920-023-01777-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2023] [Accepted: 12/13/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND Hereditary hearing loss is a highly heterogeneous disorder. This study aimed to identify the genetic cause of a Chinese family with autosomal recessive non-syndromic sensorineural hearing loss (ARNSHL). METHODS Clinical information and peripheral blood samples were collected from the proband and its parents. Two-step high-throughput next-generation sequencing on the Ion Torrent platform was applied to detect variants as follows. First, long-range PCR was performed to amplify all the regions of the GJB2, GJB3, SLC26A4, and MT-RNR1 genes, followed by next-generation sequencing. If no candidate pathogenetic variants were found, the targeted exon sequencing with AmpliSeq technology was employed to examine another 64 deafness-associated genes. Sanger sequencing was used to identify variants and the lineage co-segregation. The splicing of the MYO15A gene was assessed by in silico bioinformatics prediction and minigene assays. RESULTS Two candidate MYO15A gene (OMIM, #602,666) heterozygous splicing variants, NG_011634.2 (NM_016239.3): c.6177 + 1G > T and c.9690 + 1G > A, were identified in the proband, and these two variants were both annotated as pathogenic according to the American College of Medical Genetics and Genomics (ACMG) guidelines. Further bioinformatic analysis predicted that the c.6177 + 1G > T variant might cause exon skipping and that the c.9690 + 1G > A variant might activate a cryptic splicing donor site in the downstream intronic region. An in vitro minigene assay confirmed the above predictions. CONCLUSIONS We identified a compound heterozygous splicing variant in the MYO15A gene in a Han Chinese family with ARNSHL. Our results broaden the spectrum of MYO15A variants, potentially benefiting the early diagnosis, prevention, and treatment of the disease.
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Affiliation(s)
- Kaifeng Zheng
- Laboratory of Molecular Medicine, Institute of Maternal and Child Medicine, Affiliated Shenzhen Maternity & Child Healthcare Hospital, Southern Medical University, Shenzhen, China
| | - Sheng Lin
- Shenzhen Health Development Research and Data Management Center, Shenzhen, China
| | - Jian Gao
- Laboratory of Molecular Medicine, Institute of Maternal and Child Medicine, Affiliated Shenzhen Maternity & Child Healthcare Hospital, Southern Medical University, Shenzhen, China
| | - Shiguo Chen
- Laboratory of Molecular Medicine, Institute of Maternal and Child Medicine, Affiliated Shenzhen Maternity & Child Healthcare Hospital, Southern Medical University, Shenzhen, China
| | - Jindi Su
- Laboratory of Molecular Medicine, Institute of Maternal and Child Medicine, Affiliated Shenzhen Maternity & Child Healthcare Hospital, Southern Medical University, Shenzhen, China
| | - Zhiqiang Liu
- Shenzhen Health Development Research and Data Management Center, Shenzhen, China
| | - Shan Duan
- Laboratory of Molecular Medicine, Institute of Maternal and Child Medicine, Affiliated Shenzhen Maternity & Child Healthcare Hospital, Southern Medical University, Shenzhen, China.
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Luo Y, Wu K, Zhang X, Wang H, Wang Q. Genetic correction of induced pluripotent stem cells from a DFNA36 patient results in morphologic and functional recovery of derived hair cell-like cells. Stem Cell Res Ther 2024; 15:4. [PMID: 38167128 PMCID: PMC10763492 DOI: 10.1186/s13287-023-03617-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 12/18/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND TMC1 is one of the most common deafness genes causing DFNA36. Patient-derived human induced pluripotent stem cells (iPSCs) provide an opportunity to modelling diseases. TMC1 p.M418K mutation in human is orthologous to Beethoven mice. Here, we investigated the differentiation, morphology and electrophysiological properties of hair cell-like cells (HC-like cells) derived from DFNA36 patient. METHODS Inner ear HC-like cells were induced from iPSCs derived from DFNA36 (TMC1 p.M418K) patient (M+/-), normal control (M+/+) and genetic corrected iPSCs (M+/C). Immunofluorescence, scanning electron microscopy and whole-cell patch-clamp were used to study the mechanism and influence of TMC1 p.M418K mutation. RESULTS In this study we successfully generated HC-like cells from iPSCs with three different genotypes. HC-like cells from M+/- showed defected morphology of microvilli and physiological properties compared to M+/+. HC-like cells from M+/C showed recovery in morphology of microvilli and physiological properties. CONCLUSIONS Our results indicate that TMC1 p.M418K mutation didn't influence inner ear hair cell differentiation but the morphology of microvilli and electrophysiological properties and gene correction induced recovery. CRISPR/Cas9 gene therapy is feasible in human patient with TMC1 p.M418K mutation.
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Affiliation(s)
- Yi Luo
- Department of Audiology and Vestibular Medicine, Senior Department of Otolaryngology, Head and Neck Surgery, Chinese PLA Institute of Otolaryngology, the Sixth Medical Center of PLA General Hospital, 6 Fucheng Road, Beijing, 100048, China
- National Clinical Research Center for Otolaryngologic Diseases, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China
- Chinese PLA Medical School, 28 Fuxing Road, Beijing, 100853, China
| | - Kaiwen Wu
- Department of Audiology and Vestibular Medicine, Senior Department of Otolaryngology, Head and Neck Surgery, Chinese PLA Institute of Otolaryngology, the Sixth Medical Center of PLA General Hospital, 6 Fucheng Road, Beijing, 100048, China
- National Clinical Research Center for Otolaryngologic Diseases, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China
| | - Xiaolong Zhang
- Department of Audiology and Vestibular Medicine, Senior Department of Otolaryngology, Head and Neck Surgery, Chinese PLA Institute of Otolaryngology, the Sixth Medical Center of PLA General Hospital, 6 Fucheng Road, Beijing, 100048, China
- National Clinical Research Center for Otolaryngologic Diseases, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China
| | - Hongyang Wang
- Department of Audiology and Vestibular Medicine, Senior Department of Otolaryngology, Head and Neck Surgery, Chinese PLA Institute of Otolaryngology, the Sixth Medical Center of PLA General Hospital, 6 Fucheng Road, Beijing, 100048, China.
- National Clinical Research Center for Otolaryngologic Diseases, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China.
| | - Qiuju Wang
- Department of Audiology and Vestibular Medicine, Senior Department of Otolaryngology, Head and Neck Surgery, Chinese PLA Institute of Otolaryngology, the Sixth Medical Center of PLA General Hospital, 6 Fucheng Road, Beijing, 100048, China.
- National Clinical Research Center for Otolaryngologic Diseases, Chinese PLA General Hospital, 28 Fuxing Road, Beijing, 100853, China.
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Moyaert J, Gilles A, Mertens G, Lammers MJW, Gommeren H, Janssens de Varebeke S, Fransen E, Verhaert N, Denys S, van de Berg R, Pennings R, Vanderveken O, Van Rompaey V. Interaural and sex differences in the natural evolution of hearing levels in pre-symptomatic and symptomatic carriers of the p.Pro51Ser variant in the COCH gene. Sci Rep 2024; 14:184. [PMID: 38167558 PMCID: PMC10762206 DOI: 10.1038/s41598-023-50583-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Accepted: 12/21/2023] [Indexed: 01/05/2024] Open
Abstract
Hearing impairment constitutes a significant health problem in developed countries. If hearing loss is slowly progressive, the first signs may not be noticed in time, or remain untreated until the moment the auditory dysfunction becomes more apparent. The present study will focus on DFNA9, an autosomal dominant disorder caused by pathogenic variants in the COCH gene. Although several cross-sectional studies on this topic have been conducted, a crucial need for longitudinal research has been reported by many authors. Longitudinal trajectories of individual hearing thresholds were established as function of age and superimposed lowess curves were generated for 101 female and male carriers of the p.Pro51Ser variant. The average number of times patients have been tested was 2.49 years with a minimum of 1 year and a maximum of 4 years. In addition, interaural and sex differences were studied, as they could modify the natural evolution of the hearing function. The current study demonstrates that, both in female carriers and male carriers, the first signs of hearing decline, i.e. hearing thresholds of 20 dB HL, become apparent as early as the 3rd decade in the highest frequencies. In addition, a rapid progression of SNHL occurs between 40 and 50 years of age. Differences between male and female carriers in the progression of hearing loss are most obvious between the age of 50 and 65 years. Furthermore, interaural discrepancies also manifest from the age of 50 years onwards. High-quality prospective data on the long-term natural evolution of hearing levels offer the opportunity to identify different disease stages in each cochlea and different types of evolution. This will provide more insights in the window of opportunity for future therapeutic intervention trials.
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Affiliation(s)
- Julie Moyaert
- Department of Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium.
- Department of Otorhinolaryngology and Head and Neck Surgery, Antwerp University Hospital, Edegem, Belgium.
| | - Annick Gilles
- Department of Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
- Department of Otorhinolaryngology and Head and Neck Surgery, Antwerp University Hospital, Edegem, Belgium
| | - Griet Mertens
- Department of Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
- Department of Otorhinolaryngology and Head and Neck Surgery, Antwerp University Hospital, Edegem, Belgium
| | - Marc J W Lammers
- Department of Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
- Department of Otorhinolaryngology and Head and Neck Surgery, Antwerp University Hospital, Edegem, Belgium
| | - Hanne Gommeren
- Department of Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
- Department of Otorhinolaryngology and Head and Neck Surgery, Antwerp University Hospital, Edegem, Belgium
| | | | - Erik Fransen
- Centre of Medical Genetics, University of Antwerp, Antwerp, Belgium
| | - Nicolas Verhaert
- Department of Neurosciences, Research Group Experimental Otorhinolaryngology (ExpORL), KU Leuven, Leuven, Belgium
- Department of Otorhinolaryngology and Head and Neck Surgery, University Hospitals of Leuven, Leuven, Belgium
| | - Sam Denys
- Department of Neurosciences, Research Group Experimental Otorhinolaryngology (ExpORL), KU Leuven, Leuven, Belgium
- Department of Otorhinolaryngology and Head and Neck Surgery, University Hospitals of Leuven, Leuven, Belgium
| | - Raymond van de Berg
- Division of Balance Disorders, Department of Otorhinolaryngology and Head and Neck Surgery, Faculty of Health Medicine and Life Sciences, Maastricht University Medical Center, Maastricht, The Netherlands
| | - Ronald Pennings
- Department of Otorhinolaryngology and Head and Neck Surgery, Radboud UMC, Nijmegen, The Netherlands
| | - Olivier Vanderveken
- Department of Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
- Department of Otorhinolaryngology and Head and Neck Surgery, Antwerp University Hospital, Edegem, Belgium
| | - Vincent Van Rompaey
- Department of Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium
- Department of Otorhinolaryngology and Head and Neck Surgery, Antwerp University Hospital, Edegem, Belgium
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Wang L, Liu G, Ma D, Zeng H, Wang Y, Luo C, Zhang J, Xu Z. Next-generation sequencing for genetic testing of hearing loss populations. Clin Chim Acta 2024; 552:117693. [PMID: 38056549 DOI: 10.1016/j.cca.2023.117693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 12/03/2023] [Accepted: 12/03/2023] [Indexed: 12/08/2023]
Abstract
BACKGROUND AND AIMS Hearing loss is a common sensorineural disease with genetic heterogeneity. More than 140 genes are known to cause hereditary hearing loss. We aim to uncover the etiologies of hearing loss and provide patients with reasonable reproductive choices. MATERIALS AND METHODS Total 825 participants were recruited, including 74 individuals, 47 couples, and 219 families, to identify the molecular etiologies of hearing loss using next-generation sequencing (NGS). Novel mutations were verified with a minigene splicing assay and the construction of three-dimensional protein models. RESULTS A positive molecular diagnosis was obtained for 244 patients, a rate of 63.05 %. Total 470 mutations were identified in 18 causative genes in positive patients. The most common genes mutated were GJB2 and SLC26A4. 47 novel mutations were identified. Further analysis predicted that two splicing mutations would cause abnormal mRNA splicing and three missense mutations would affect the protein structure. The results of prenatal diagnosis showed that the genotypes of 15 fetuses were the same as the probands. CONCLUSION Our findings expand the mutation spectrum of hearing loss and highlight the importance of genetic diagnosis and prenatal diagnosis to allow accurate and personalized guidance for those at high risk of deafness.
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Affiliation(s)
- Lulu Wang
- Department of Prenatal Diagnosis, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing 210004, Jiangsu, China
| | - Gang Liu
- Department of Prenatal Diagnosis, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing 210004, Jiangsu, China
| | - Dingyuan Ma
- Department of Prenatal Diagnosis, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing 210004, Jiangsu, China
| | - Huasha Zeng
- Department of Prenatal Diagnosis, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing 210004, Jiangsu, China
| | - Yuguo Wang
- Department of Prenatal Diagnosis, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing 210004, Jiangsu, China
| | - Chunyu Luo
- Department of Prenatal Diagnosis, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing 210004, Jiangsu, China
| | - Jingjing Zhang
- Department of Prenatal Diagnosis, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing 210004, Jiangsu, China.
| | - Zhengfeng Xu
- Department of Prenatal Diagnosis, Women's Hospital of Nanjing Medical University, Nanjing Maternity and Child Health Care Hospital, Nanjing 210004, Jiangsu, China.
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Wang Q, He L. [Genetic counseling for hearing loss today]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2024; 38:1-7. [PMID: 38297842 DOI: 10.13201/j.issn.2096-7993.2024.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Indexed: 02/02/2024]
Abstract
Genetic counseling for hearing loss today originated from decoding the genetic code of hereditary hearing loss, which serves as an effective strategy for preventing hearing loss and constitutes a crucial component of the diagnostic and therapeutic framework. This paper described the main principles and contents of genetic counseling for hearing loss, the key points of counseling across various genetic models and its application in tertiary prevention strategies targeting hearing impairment. The prospects of an AI-assisted genetic counseling decision system and the envisions of genetic counseling in preventing hereditary hearing loss were introduced. Genetic counseling for hearing loss today embodies the hallmark of a new era, which is inseparable from the advancements in science and technology, and will undoubtedly contribute to precise gene intervention!
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Affiliation(s)
- Qiuju Wang
- Department of Audiology and Vestibular Medicine,Senior Department of Otolaryngology Head and Neck Surgery,the Sixth Medical Center of PLA General Hospital,Beijing,100853,China
| | - Lin He
- Bio-X Institutes,Shanghai Jiao Tong University
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Gao Y, Li F, Luo R, Chen G, Li D, Wang D, Wang Q. [Clinical features of CAPOS syndrome caused by maternal ATP1A3 gene variation: a case report]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2024; 38:73-76. [PMID: 38297853 DOI: 10.13201/j.issn.2096-7993.2024.01.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Indexed: 02/02/2024]
Abstract
CAPOS syndrome is an autosomal dominant neurological disorder caused by mutations in the ATP1A3 gene. Initial symptoms, often fever-induced, include recurrent acute ataxic encephalopathy in childhood, featuring cerebellar ataxia, optic atrophy, areflflexia, sensorineural hearing loss, and in some cases, pes cavus. This report details a case of CAPOS syndrome resulting from a maternal ATP1A3 gene mutation. Both the child and her mother exhibited symptoms post-febrile induction,including severe sensorineural hearing loss in both ears, ataxia, areflexia, and decreased vision. Additionally, the patient's mother presented with pes cavus. Genetic testing revealed a c. 2452G>A(Glu818Lys) heterozygous mutation in theATP1A3 gene in the patient . This article aims to enhance clinicians' understanding of CAPOS syndrome, emphasizing the case's clinical characteristics, diagnostic process, treatment, and its correlation with genotypeic findings.
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Affiliation(s)
- Yun Gao
- Department of Audiology and Vestibular Medicine,Senior Department of Otolaryngology Head and Neck Surgery,the Sixth Medical Center of Chinese PLA General Hospital,National Clinical Research Center for Otolaryngologic Diseases,Beijing,100048,China
| | - Fengjiao Li
- Department of Otolaryngology Head and Neck Surgery,the Second People's Hospital of Jiaozuo City,the First Affiliated Hospital of Henan Polytechnic University
| | - Rong Luo
- Department of Otolaryngology Head and Neck Surgery,Sichuan Tianfu New Area People's Hospital
| | - Guohui Chen
- Department of Audiology and Vestibular Medicine,Senior Department of Otolaryngology Head and Neck Surgery,the Sixth Medical Center of Chinese PLA General Hospital,National Clinical Research Center for Otolaryngologic Diseases,Beijing,100048,China
| | - Danyang Li
- Department of Audiology and Vestibular Medicine,Senior Department of Otolaryngology Head and Neck Surgery,the Sixth Medical Center of Chinese PLA General Hospital,National Clinical Research Center for Otolaryngologic Diseases,Beijing,100048,China
| | - Dayong Wang
- Department of Audiology and Vestibular Medicine,Senior Department of Otolaryngology Head and Neck Surgery,the Sixth Medical Center of Chinese PLA General Hospital,National Clinical Research Center for Otolaryngologic Diseases,Beijing,100048,China
| | - Qiuju Wang
- Department of Audiology and Vestibular Medicine,Senior Department of Otolaryngology Head and Neck Surgery,the Sixth Medical Center of Chinese PLA General Hospital,National Clinical Research Center for Otolaryngologic Diseases,Beijing,100048,China
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Al Sudani ZM, Khosravi T, Oladnabi M. Hearing Loss Among Families with 2 and More Affected Members in Golestan Province, Iran: A Cross-Sectional Study of 320 Families. J Int Adv Otol 2024; 20:44-49. [PMID: 38454288 PMCID: PMC10895870 DOI: 10.5152/iao.2024.231214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 07/20/2023] [Indexed: 03/09/2024] Open
Abstract
BACKGROUND Our study centers on various aspects of families who have 2 or more members with hearing loss (HL) and are living in Golestan province in Iran. We aimed to identify those families with the highest probability of hereditary HL and also to examine the impact of consanguinity among them. METHODS The families included in the study underwent a comprehensive screening process that involved their prenatal and postnatal histories as well as family medical histories. Additionally, each patient received a thorough clinical ear examination. The evaluation also took into account factors such as patterns of inheritance, consanguinity, a 3-generation pedigree, and physical examination. Following this initial assessment, patients were referred for a complete hearing evaluation, which included pure-tone audiometry, speech recognition threshold, otoacoustic emission, and auditory brainstem response tests. RESULTS We identified a total of 8553 individuals living in Golestan province who are hearing impaired. Among those, our records indicate that 320 families had at least 2 affected members. The rate of consanguinity marriage in non-syndromic families was 64.43%. Also, a significant number (88.12%, or n=282) of the families exhibited hereditary HL, among which a substantial proportion (89.72%, or n=253) presented with nonsyndromic forms of HL. Furthermore, bilateral, stable, and prelingual HL were the most frequently observed types, and a majority of the patients were diagnosed with sensorineural and profound HL. CONCLUSION This study revealed a correlation between consanguinity and the incidence of familial HL, with more probability of bilateral, prelingual, sensorineural, and profound forms.
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Affiliation(s)
- Zainab M. Al Sudani
- Student Research Committee, Golestan University of Medical Sciences, Gorgan, Iran
| | - Teymoor Khosravi
- Student Research Committee, Golestan University of Medical Sciences, Gorgan, Iran
| | - Morteza Oladnabi
- Gorgan Congenital Malformations Research Center, Golestan University of Medical Sciences, Gorgan, Iran
- Ischemic Disorders Research Center, Golestan University of Medical Sciences, Gorgan, Iran
- Department of Medical Genetics, Golestan University of Medical Sciences, School of Advanced Technologies in Medicine, Gorgan, Iran
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Xiong Y, Chen M, Wang H, Chen L, Huang H, Xu L. Mutation analysis of GJB2, SLC26A4, GJB3 and mtDNA12SrRNA genes in 251 non-syndromic hearing loss patients in Fujian, China. Int J Pediatr Otorhinolaryngol 2024; 176:111777. [PMID: 38029595 DOI: 10.1016/j.ijporl.2023.111777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 10/23/2023] [Accepted: 11/03/2023] [Indexed: 12/01/2023]
Abstract
OBJECTIVES The molecular etiology of non-syndromic hearing loss (NSHL) in Southeastern China (Fujian) has not been precisely identified. our study selected patients with NSHL and analyzed their causative genes, which helped to improve the accuracy of the diagnosis of hereditary hearing loss (HHL) and its treatment. METHODS 251 unrelated patients who attended the otolaryngology clinic of Fujian Maternal and Child Health Hospital with hearing loss were enrolled to our study. All patients had genetic tests and listening tests, of which 251 were diagnosed with NSHL. In addition, we used whole-exome sequencing (WES) in a patient who has a significant family history of HHL but negative for gene chip testing, as well as in his family members. RESULT Among of 251 patients, Nucleotide changes were found in 63 cases (25.09%), including 34 located in GJB2(13.5%, including 235delC and 299_300delAT), 13 located in SLC26A4(5.18%, including c.919-2G > A and 2168 A > G), 1 located in GJB3(0.4%,538C > T) and 16 located in mtDNA12SrRNA (6.37%,1555 A > G). In addition, we discuss the process of identifying novel PLS1 mutations from 251 patients. CONCLUSION Our results demonstrate the conventional deafness gene mutation in 251 NSHL patients in Fujian, China. Compared with the other area of China, we have a lower detection rate, but GJB2 235delC remains the most common mutation in Fujian. In addition, we discuss the process of discovering novel mutation locus for deafness, which provides an understanding for deafness diagnosis and genetic testing.
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Affiliation(s)
- Yikang Xiong
- The Frist Department of Clinical Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, 350122, Fujian Province, China
| | - Meihuan Chen
- Medical Genetic Diagnosis and Therapy Center of Fujian Maternity and Child Health Hospital College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fujian Provincial Key Laboratory of Prenatal Diagnosis and Birth Defect, Fuzhou, 350001, Fujian Province, China
| | - Haiwei Wang
- Medical Genetic Diagnosis and Therapy Center of Fujian Maternity and Child Health Hospital College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fujian Provincial Key Laboratory of Prenatal Diagnosis and Birth Defect, Fuzhou, 350001, Fujian Province, China
| | - Lingji Chen
- Medical Genetic Diagnosis and Therapy Center of Fujian Maternity and Child Health Hospital College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fujian Provincial Key Laboratory of Prenatal Diagnosis and Birth Defect, Fuzhou, 350001, Fujian Province, China
| | - Hailong Huang
- Medical Genetic Diagnosis and Therapy Center of Fujian Maternity and Child Health Hospital College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fujian Provincial Key Laboratory of Prenatal Diagnosis and Birth Defect, Fuzhou, 350001, Fujian Province, China.
| | - Liangpu Xu
- The Frist Department of Clinical Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, 350122, Fujian Province, China; Medical Genetic Diagnosis and Therapy Center of Fujian Maternity and Child Health Hospital College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fujian Provincial Key Laboratory of Prenatal Diagnosis and Birth Defect, Fuzhou, 350001, Fujian Province, China.
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Wang R, Zhuang BX, Guo W, Li J, Lin C, Yang S. Study of the factors related to air-bone gap in enlarged vestibular aqueduct. Acta Otolaryngol 2024; 144:39-43. [PMID: 38289678 DOI: 10.1080/00016489.2024.2308014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 01/14/2024] [Indexed: 02/01/2024]
Abstract
BACKGROUND Over half of patients with enlarged vestibular aqueducts (EVA) will have an air-bonr gap (ABG), however, current research on audiology has focused on the influencing factors of air-conducted. OBJECTIVE To retrospectively analyse the influencing factors and clinical manifestations of the bone-conduction threshold and ABG in patients with EVA. MATERIALS AND METHODS We included 286 patients with EVA; among them, 126 had full SLC26A4 gene sequence results. We performed a descriptive analysis of the bone-conduction threshold and explored the effect of age. Finally, we analyzed the relationship of ABG and SLC26A4 genes with the degree of vestibular aqueduct (VA) enlargement. RESULTS Among 555 ears, 312 (57.8%) ears had ABG; approximately 94% of the patients' bone-conduction hearing is almost completely lost at frequencies of 2 and 4 kHz. There was no linear correlation between age and bone-conduction threshold (p > 0.05). ABG did not significantly differ according to the degree of VA enlargement and number of SLC26A4 allele mutations (p > 0.05). CONCLUSIONS AND SIGNIFICANCE Among patients with EVA, ABG is mainly produced at low frequencies and is not significantly correlated with age, size of the VA opening or SLC26A4 genes, which could be attributed to the biomechanical effects.
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Affiliation(s)
- Rong Wang
- The First Affiliated Hospital of Fujian Medical University, Fuzhou, PR China
- Department of Otolaryngology-Head and Neck Surgery, the Sixth Medical Center of PLA General Hospital, Beijing, PR China
- National Key Laboratory of Hearing and Balance Science, Beijing, PR China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing, PR China
- Beijing Key Lab of Hearing Impairment Prevention and Treatment, Beijing, PR China
| | - Bo-Xiang Zhuang
- Department of Otolaryngology-Head and Neck Surgery, the Sixth Medical Center of PLA General Hospital, Beijing, PR China
- National Key Laboratory of Hearing and Balance Science, Beijing, PR China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing, PR China
- Beijing Key Lab of Hearing Impairment Prevention and Treatment, Beijing, PR China
| | - Weiwei Guo
- Department of Otolaryngology-Head and Neck Surgery, the Sixth Medical Center of PLA General Hospital, Beijing, PR China
- National Key Laboratory of Hearing and Balance Science, Beijing, PR China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing, PR China
| | - Jianan Li
- Department of Otolaryngology-Head and Neck Surgery, the Sixth Medical Center of PLA General Hospital, Beijing, PR China
- National Key Laboratory of Hearing and Balance Science, Beijing, PR China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing, PR China
- Beijing Key Lab of Hearing Impairment Prevention and Treatment, Beijing, PR China
| | - Chang Lin
- The First Affiliated Hospital of Fujian Medical University, Fuzhou, PR China
| | - Shiming Yang
- Department of Otolaryngology-Head and Neck Surgery, the Sixth Medical Center of PLA General Hospital, Beijing, PR China
- National Key Laboratory of Hearing and Balance Science, Beijing, PR China
- National Clinical Research Center for Otolaryngologic Diseases, Beijing, PR China
- Beijing Key Lab of Hearing Impairment Prevention and Treatment, Beijing, PR China
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Cheng J, Li T, Tan Q, Fu J, Zhang L, Yang L, Zhou B, Yang L, Fu S, Linehan AG, Fu J. Novel, pathogenic insertion variant of GSDME associates with autosomal dominant hearing loss in a large Chinese pedigree. J Cell Mol Med 2024; 28:e18004. [PMID: 37864300 PMCID: PMC10805510 DOI: 10.1111/jcmm.18004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 09/15/2023] [Accepted: 10/10/2023] [Indexed: 10/22/2023] Open
Abstract
Nonsyndromic hearing loss (NSHL) is a genetically diverse, highly heterogeneous condition characterised by deafness, and Gasdermin E (GSDME) variants have been identified as directly inducing autosomal dominant NSHL. While many NSHL cases associated with GSDME involve the skipping of exon 8, there is another, less understood pathogenic insertion variant specifically found in Chinese pedigrees that causes deafness, known as autosomal dominant 5 (DFNA5) hearing loss. In this study, we recruited a large Chinese pedigree, conducted whole-exome and Sanger sequencing to serve as a comprehensive clinical examination, and extracted genomic DNA samples for co-segregation analysis of the members. Conservation and expression analyses for GSDME were also conducted. Our clinical examinations revealed an autosomal dominant phenotype of hearing loss in the family. Genetic analysis identified a novel insertion variant in GSDME exon 8 (GSDME: NM_004403.3: c.1113_1114insGGGGTGCAGCTTACAGGGTGGGTGT: p. P372fs*36). This variant is segregated with the deafness phenotype of this pedigree. The GSDME gene was highly conserved in the different species we analysed, and its mRNA expression was ubiquitously low in different human tissues. In conclusion, we have successfully identified a novel pathogenic insertion variant of GSDME in a Chinese pedigree that causes deafness, shedding light on the genetic basis of hearing loss within this specific family. Our findings expand the spectrum of known variants associated with GSDME-related deafness and may further support both the underlying gain-of-function mechanism and functional associations of GSDME hearing loss variants.
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Affiliation(s)
- Jingliang Cheng
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical MedicineSouthwest Medical UniversityLuzhouChina
| | - Ting Li
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical MedicineSouthwest Medical UniversityLuzhouChina
| | - Qi Tan
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical MedicineSouthwest Medical UniversityLuzhouChina
| | - Jiewen Fu
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical MedicineSouthwest Medical UniversityLuzhouChina
| | - Lianmei Zhang
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical MedicineSouthwest Medical UniversityLuzhouChina
- Department of PathologyThe Affiliated Huai'an No. 1 People's Hospital of Nanjing Medical UniversityHuai'anChina
| | - Luquan Yang
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical MedicineSouthwest Medical UniversityLuzhouChina
| | - Baixu Zhou
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical MedicineSouthwest Medical UniversityLuzhouChina
- Department of Gynecology and ObstetricsGuangdong Women and Children HospitalGuangzhouChina
| | - Lisha Yang
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical MedicineSouthwest Medical UniversityLuzhouChina
- Department of ObstetricsThe Affiliated Hospital of Southwest Medical UniversityLuzhouChina
| | - Shangyi Fu
- Department of Molecular and Human GeneticsHuman Genome Sequencing Center, Baylor College of MedicineHoustonTexasUSA
| | | | - Junjiang Fu
- Key Laboratory of Epigenetics and Oncology, The Research Center for Preclinical MedicineSouthwest Medical UniversityLuzhouChina
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Lin Y, Xu J, Yang T. [Genetic and phenotypic analysis of MYO15A rare variants associated with autosomal recessive hearing loss]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2024; 38:38-43. [PMID: 38297847 DOI: 10.13201/j.issn.2096-7993.2024.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/13/2023] [Indexed: 02/02/2024]
Abstract
Objective:To analyze the phenotype and genotype characteristics of autosomal recessive hearing loss caused by MYO15A gene variants, and to provide genetic diagnosis and genetic counseling for patients and their families. Methods:Identification of MYO15A gene variants by next generation sequencing in two sporadic cases of hearing loss at Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine. The sequence variants were verified by Sanger sequencing.The pathogenicity of these variants was determined according to the American College of Medical Genetics and Genomics(ACMG) variant classification guidelines, in conjuction with clinical data. Results:The probands of the two families have bilateral,severe or complete hearing loss.Four variants of MYO15A were identified, including one pathogenic variant that has been reported, two likely pathogenic variants,and one splicing variant of uncertain significance. Patient I carries c. 3524dupA(p. Ser1176Valfs*14), a reported pathogenic variant, and a splicing variant c. 10082+3G>A of uncertain significance according to the ACMG guidelines. Patient I was treated with bilateral hearing aids with satisfactory effect, demonstrated average hearing thresholds of 37.5 dB in the right ear and 33.75 dB in the left ear. Patient Ⅱ carries c. 7441_7442del(p. Leu2481Glufs*86) and c. 10250_10252del(p. Ser3417del),a pair of as likely pathogenic variants according to the ACMG guidelines. Patient Ⅱ, who underwent right cochlear implantation eight years ago, achieved scores of 9 on the Categorical Auditory Performance-Ⅱ(CAP-Ⅱ) and 5 on the Speech Intelligibility Rating(SIR). Conclusion:This study's discovery of the rare c. 7441_7442del variant and the splicing variant c. 10082+3G>A in the MYO15A gene is closely associated with autosomal recessive hearing loss, expanding the MYO15A variant spectrum. Additionally, the pathogenicity assessment of the splicing variant facilitates classification of splicing variations.
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Affiliation(s)
- Yun Lin
- Department of Otolaryngology-Head and Neck Surgery,Shanghai Ninth People's Hospital,Shanghai Jiao Tong University School of Medicine,Shanghai,200125,China
- Ear Institute,Shanghai Jiao Tong University School of Medicine
- Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases
| | - Jun Xu
- Department of Otolaryngology-Head and Neck Surgery,Shanghai Ninth People's Hospital,Shanghai Jiao Tong University School of Medicine,Shanghai,200125,China
- Ear Institute,Shanghai Jiao Tong University School of Medicine
- Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases
| | - Tao Yang
- Department of Otolaryngology-Head and Neck Surgery,Shanghai Ninth People's Hospital,Shanghai Jiao Tong University School of Medicine,Shanghai,200125,China
- Ear Institute,Shanghai Jiao Tong University School of Medicine
- Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases
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Qi J, Zhang L, Tan F, Zhang Y, Zhou Y, Zhang Z, Wang H, Yu C, Jiang L, Liu J, Chen T, Wu L, Zhang S, Sun S, Sun S, Lu L, Wang Q, Chai R. Preclinical Efficacy And Safety Evaluation of AAV-OTOF in DFNB9 Mouse Model And Nonhuman Primate. Adv Sci (Weinh) 2024; 11:e2306201. [PMID: 38014592 PMCID: PMC10797419 DOI: 10.1002/advs.202306201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 10/08/2023] [Indexed: 11/29/2023]
Abstract
OTOF mutations are the principal causes of auditory neuropathy. There are reports on Otof-related gene therapy in mice, but there is no preclinical research on the drug evaluations. Here, Anc80L65 and the mouse hair cell-specific Myo15 promoter (mMyo15) are used to selectively and effectively deliver human OTOF to hair cells in mice and nonhuman primates to evaluate the efficacy and safety of OTOF gene therapy drugs. A new dual-AAV-OTOF-hybrid strategy to transfer full-length OTOF is generated, which can stably restore hearing in adult OTOFp.Q939*/Q939* mice with profound deafness, with the longest duration being at least 150 days, and the best therapeutic effect without difference in hearing from wild-type mice. An AAV microinjection method into the cochlea of cynomolgus monkeys without hearing impairment is further established and found the OTOF can be safely and effectively driven by the mMyo15 promoter in hair cells. In addition, the therapeutic dose of AAV drugs has no impact on normal hearing and does not cause significant systemic toxicity both in mouse and nonhuman primates. In summary, this study develops a potential gene therapy strategy for DFNB9 patients in the clinic and provides complete, standardized, and systematic research data for clinical research and application.
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Affiliation(s)
- Jieyu Qi
- State Key Laboratory of Digital Medical Engineering, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, School of Medicine, Advanced Institute for Life and Health, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
- Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, 226001, China
- School of Life Science, Beijing Institute of Technology, Beijing, 100081, China
| | - Liyan Zhang
- State Key Laboratory of Digital Medical Engineering, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, School of Medicine, Advanced Institute for Life and Health, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - Fangzhi Tan
- State Key Laboratory of Digital Medical Engineering, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, School of Medicine, Advanced Institute for Life and Health, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - Yang Zhang
- Department of Neurology, Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China
| | - Yinyi Zhou
- State Key Laboratory of Digital Medical Engineering, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, School of Medicine, Advanced Institute for Life and Health, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - Ziyu Zhang
- State Key Laboratory of Digital Medical Engineering, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, School of Medicine, Advanced Institute for Life and Health, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - Hongyang Wang
- Senior Department of Otolaryngology-Head & Neck Surgery, the Sixth Medical Center of Chinese PLA General Hospital, Beijing, 100048, China
| | - Chaorong Yu
- Otovia Therapeutics Inc., Suzhou, 215101, China
| | - Lulu Jiang
- Otovia Therapeutics Inc., Suzhou, 215101, China
| | | | - Tian Chen
- State Key Laboratory of Digital Medical Engineering, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, School of Medicine, Advanced Institute for Life and Health, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
| | - Lianqiu Wu
- Otovia Therapeutics Inc., Suzhou, 215101, China
| | | | - Sijie Sun
- Otovia Therapeutics Inc., Suzhou, 215101, China
- Fosun Health Capital, Shanghai, 200233, China
| | - Shan Sun
- ENT Institute and Otorhinolaryngology, Department of Affiliated Eye and ENT Hospital, Key Laboratory of Hearing Medicine of NHFPC, Fudan University, Shanghai, 200031, China
| | - Ling Lu
- Department of Otolaryngology-Head and Neck Surgery, Jiangsu Provincial Key Medical Discipline (Laboratory), Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing, 210008, China
| | - Qiuju Wang
- Senior Department of Otolaryngology-Head & Neck Surgery, the Sixth Medical Center of Chinese PLA General Hospital, Beijing, 100048, China
| | - Renjie Chai
- State Key Laboratory of Digital Medical Engineering, Department of Otolaryngology Head and Neck Surgery, Zhongda Hospital, School of Life Sciences and Technology, School of Medicine, Advanced Institute for Life and Health, Jiangsu Province High-Tech Key Laboratory for Bio-Medical Research, Southeast University, Nanjing, 210096, China
- Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, 226001, China
- School of Life Science, Beijing Institute of Technology, Beijing, 100081, China
- Department of Otolaryngology-Head and Neck Surgery, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, 610054, China
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Caiazza M, Budillon A, Monda E, Aruta G, Esposito A, Del Vecchio Blanco F, Piluso G, Nigro V, Scarano G, Limongelli G. An atypical Aymé-Gripp phenotype detected by exome sequencing. Am J Med Genet A 2024; 194:70-76. [PMID: 37712597 DOI: 10.1002/ajmg.a.63406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/27/2023] [Accepted: 09/01/2023] [Indexed: 09/16/2023]
Abstract
Aymé-Gripp Syndrome (AGS) is an ultra-rare syndrome characterized by peculiar facial traits combined with early bilateral cataracts, sensorineural hearing loss, and variable neurodevelopmental abnormalities. Only a few cases carrying a pathogenic variant in MAF have been described to date. A significant effort is then required to expand the genotypic and phenotypic spectrum of this condition. In this paper, we report the peculiar case of a 6-year-old girl carrying a de novo missense pathogenic variant in MAF, being the first case reported to show a milder phenotype with no cataracts and deafness displayed. Furthermore, we performed a systematic review of previously published cases, focusing on clinical manifestation and genotype.
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Affiliation(s)
- Martina Caiazza
- Inherited and Rare Cardiovascular Diseases Unit, Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", Monaldi Hospital, Naples, Italy
| | - Alberto Budillon
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Emanuele Monda
- Inherited and Rare Cardiovascular Diseases Unit, Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", Monaldi Hospital, Naples, Italy
| | - Giustina Aruta
- Inherited and Rare Cardiovascular Diseases Unit, Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", Monaldi Hospital, Naples, Italy
| | - Augusto Esposito
- Inherited and Rare Cardiovascular Diseases Unit, Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", Monaldi Hospital, Naples, Italy
| | | | - Giulio Piluso
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Vincenzo Nigro
- Department of Precision Medicine, University of Campania "Luigi Vanvitelli", Naples, Italy
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Italy
| | - Gioacchino Scarano
- Inherited and Rare Cardiovascular Diseases Unit, Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", Monaldi Hospital, Naples, Italy
- U.O.S.D. Genetica Medica, A.O.R.N. San Pio, Benevento, Italy
| | - Giuseppe Limongelli
- Inherited and Rare Cardiovascular Diseases Unit, Department of Translational Medical Sciences, University of Campania "Luigi Vanvitelli", Monaldi Hospital, Naples, Italy
- Institute of Cardiovascular Science, University College London and St. Bartholomew's Hospital, London, UK
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Zhou R, Guan J, Wang Q. [Genetic characteristic analysis of slight-to-moderate sensorineural hearing loss in children]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2024; 38:18-22. [PMID: 38297844 DOI: 10.13201/j.issn.2096-7993.2024.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Indexed: 02/02/2024]
Abstract
Objective:To analyze genetic factors and phenotype characteristics in pediatric population with slight-to-moderate sensorineural hearing loss. Methods:Children with slight-to-moderate sensorineural hearing loss of and their parents, enrolled from the Chinese Deafness Genome Project, were studied. Hearing levels were assessed using pure tone audiometry, behavioral audiometry, auditory steady state response(ASSR), auditory brainstem response(ABR) thresholds, and deformed partial otoacoustic emission(DPOAE). Classification of hearing loss is according to the 2022 American College of Medical Genetics and Genomics(ACMG) Clinical Practice Guidelines for Hearing Loss. Whole exome sequencing(WES) and deafness gene Panel testing were performed on peripheral venous blood from probands and validations were performed on their parents by Sanger sequencing. Results:All 134 patients had childhood onset, exhibiting bilateral symmetrical slight-to-moderate sensorineural hearing loss, as indicated by audiological examinations. Of the 134 patients, 29(21.6%) had a family history of hearing loss, and the rest were sporadic patients. Genetic causative genes were identified in 66(49.3%) patients. A total of 11 causative genes were detected, of which GJB2 was causative in 34 cases(51.5%), STRC in 10 cases(15.1%), MPZL2 gene in six cases(9.1%), and USH2A in five cases(7.6%).The most common gene detected in slight-to-moderate hearing loss was GJB2, with c. 109G>A homozygous mutation found in 16 cases(47.1%) and c. 109G>A compound heterozygous mutation in 9 cases(26.5%). Conclusion:This study provides a crucial genetic theory reference for early screening and detection of mild to moderate hearing loss in children, highlighting the predominance of recessive inheritance and the significance of gene like GJB2, STRC, MPZL2, USH2A.
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Affiliation(s)
- Rui Zhou
- Department of Audiology and Vestibular Medicine,College of Otolaryngology Head and Neck Surgery,Chinese PLA General Hospital
- National Clinical Research Center for Otolaryngologic Diseases
| | - Jing Guan
- Department of Audiology and Vestibular Medicine,College of Otolaryngology Head and Neck Surgery,Chinese PLA General Hospital
- National Clinical Research Center for Otolaryngologic Diseases
| | - Qiuju Wang
- Department of Audiology and Vestibular Medicine,College of Otolaryngology Head and Neck Surgery,Chinese PLA General Hospital
- National Clinical Research Center for Otolaryngologic Diseases
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Shahid M, Ahmed M, Avula S, Dasgupta S. Cochleovestibular Phenotype in a Rare Genetic MED13L Mutation. J Int Adv Otol 2024; 20:85-88. [PMID: 38454295 PMCID: PMC10895866 DOI: 10.5152/iao.2024.231284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Accepted: 09/08/2023] [Indexed: 03/09/2024] Open
Abstract
The gene MED13 participates in transcription. The MED13L gene is a paralog of MED13 that is involved in developmental gene expression. Mutations in the gene have been shown to result in a heterogenous phenotype affecting several physiological systems. Hearing loss has been reported very rarely, and vestibular weakness has never been reported in the condition. In this report, we present a mutation of MED13L in c.1162A > T (p.Arg388Ter), where we detail and describe a cochleovestibular phenotype with objective vestibulometry for the first time. The child showed bilateral sloping sensorineural hearing loss, a bilateral vestibular weakness, and an inner ear vestibular structural abnormality on imaging. Early intervention with hearing aids and vestibular rehabilitation led to a favorable outcome in terms of speech, communication, and balance. We emphasize the importance of comprehensive audiovestibular assessment in children diagnosed with MED13L mutations for effective management of these children.
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Affiliation(s)
- Mariam Shahid
- University of Liverpool, Faculty of Medical and Health Sciences, School of Medicine, UK
| | - Mohamed Ahmed
- Department of Audiology and Audiovestibular Medicine, Alder Hey Children’s Hospital NHS Foundation Trust, Liverpool, UK
| | - Shivaram Avula
- University of Liverpool, Faculty of Medical and Health Sciences, School of Medicine, UK
- Department of Radiology, Alder Hey Children’s Hospital NHS Foundation Trust, Liverpool, UK
| | - Soumit Dasgupta
- University of Liverpool, Faculty of Medical and Health Sciences, School of Medicine, UK
- Department of Audiology and Audiovestibular Medicine, Alder Hey Children’s Hospital NHS Foundation Trust, Liverpool, UK
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48
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Chen F, Zhang Q, Zhang Q, Wang Q. [Research progress on hereditary endocrine and metabolic diseases associated with sensorineural hearing loss]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2024; 38:63-69. [PMID: 38297851 DOI: 10.13201/j.issn.2096-7993.2024.01.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Indexed: 02/02/2024]
Abstract
Hereditary endocrine and metabolic diseases , caused by genetic factors, exhibit complex and diverse symptoms, including the possibility of concurrent sensorineural deafness. Currently, there is a limited clinical understanding of hereditary endocrine and metabolic diseases that manifest with deafness, the pathogenesis remains unclear,and there is a lack of effective diagnostic and treatment methods. This article summarizes the research progress of hereditary endocrine and metabolic diseases complicated with deafness from the pathogenesis, clinical phenotype, diagnosis and treatment. Understanding the current research progress and integrating genetic analysis into clinical practice are crucial for accurate diagnosis and treatment, evaluating clinical efficacy, and providing effective genetic counseling for these diseases.
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Affiliation(s)
- Fang Chen
- Traditional Chinese Medicine Endocrinology Department of the 985th Hospital of the Joint Logistics Support Force of the People's Liberation Army,Taiyuan,030001,China
| | - Qinying Zhang
- Traditional Chinese Medicine Endocrinology Department of the 985th Hospital of the Joint Logistics Support Force of the People's Liberation Army,Taiyuan,030001,China
| | - Qiujing Zhang
- Department of Audiology and Vestibular Medicine,Institute of Otolaryngology,Senior Department of Otolaryngology Head and Neck Surgery,the First Medical Center of Chinese PLA General Hospital,National Clinical Research Center for Otolaryngologic Diseases
| | - Qiuju Wang
- Department of Audiology and Vestibular Medicine,Institute of Otolaryngology,Senior Department of Otolaryngology Head and Neck Surgery,the First Medical Center of Chinese PLA General Hospital,National Clinical Research Center for Otolaryngologic Diseases
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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50
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Fehrmann MLA, Huinck WJ, Thijssen MEG, Haer-Wigman L, Yntema HG, Rotteveel LJC, Widdershoven JCC, Goderie T, van Dooren MF, Hoefsloot EH, van der Schroeff MP, Mylanus EAM, Lanting CP, Pennings RJE. Stable long-term outcomes after cochlear implantation in subjects with TMPRSS3 associated hearing loss: a retrospective multicentre study. J Otolaryngol Head Neck Surg 2023; 52:82. [PMID: 38102706 PMCID: PMC10724910 DOI: 10.1186/s40463-023-00680-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 11/06/2023] [Indexed: 12/17/2023] Open
Abstract
BACKGROUND The spiral ganglion hypothesis suggests that pathogenic variants in genes preferentially expressed in the spiral ganglion nerves (SGN), may lead to poor cochlear implant (CI) performance. It was long thought that TMPRSS3 was particularly expressed in the SGNs. However, this is not in line with recent reviews evaluating CI performance in subjects with TMPRSS3-associated sensorineural hearing loss (SNHL) reporting overall beneficial outcomes. These outcomes are, however, based on variable follow-up times of, in general, 1 year or less. Therefore, we aimed to 1. evaluate long-term outcomes after CI implantation of speech recognition in quiet in subjects with TMPRSS3-associated SNHL, and 2. test the spiral ganglion hypothesis using the TMPRSS3-group. METHODS This retrospective, multicentre study evaluated long-term CI performance in a Dutch population with TMPRSS3-associated SNHL. The phoneme scores at 70 dB with CI in the TMPRSS3-group were compared to a control group of fully genotyped cochlear implant users with post-lingual SNHL without genes affecting the SGN, or severe anatomical inner ear malformations. CI-recipients with a phoneme score ≤ 70% at least 1-year post-implantation were considered poor performers and were evaluated in more detail. RESULTS The TMPRSS3 group consisted of 29 subjects (N = 33 ears), and the control group of 62 subjects (N = 67 ears). For the TMPRSS3-group, we found an average phoneme score of 89% after 5 years, which remained stable up to 10 years post-implantation. At both 5 and 10-year follow-up, no difference was found in speech recognition in quiet between both groups (p = 0.830 and p = 0.987, respectively). Despite these overall adequate CI outcomes, six CI recipients had a phoneme score of ≤ 70% and were considered poor performers. The latter was observed in subjects with residual hearing post-implantation or older age at implantation. CONCLUSION Subjects with TMPRSS3-associated SNHL have adequate and stable long-term outcomes after cochlear implantation, equal to the performance of genotyped patient with affected genes not expressed in the SGN. These findings are not in line with the spiral ganglion hypothesis. However, more recent studies showed that TMPRSS3 is mainly expressed in the hair cells with only limited SGN expression. Therefore, we cannot confirm nor refute the spiral ganglion hypothesis.
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Affiliation(s)
- M L A Fehrmann
- Department of Otorhinolaryngology, Radboudumc, Nijmegen, The Netherlands
| | - W J Huinck
- Department of Otorhinolaryngology, Radboudumc, Nijmegen, The Netherlands
| | - M E G Thijssen
- Department of Otorhinolaryngology, Radboudumc, Nijmegen, The Netherlands
| | - L Haer-Wigman
- Department of Clinical Genetics, Radboudumc, Nijmegen, The Netherlands
| | - H G Yntema
- Department of Clinical Genetics, Radboudumc, Nijmegen, The Netherlands
| | - L J C Rotteveel
- Department of Otorhinolaryngology, Leiden UMC, Leiden, The Netherlands
| | - J C C Widdershoven
- Department of Otorhinolaryngology, Maastricht UMC, Maastricht, The Netherlands
| | - T Goderie
- Department of Otorhinolaryngology-Head and Neck Surgery, Ear and Hearing, Amsterdam UMC, Amsterdam, The Netherlands
| | - M F van Dooren
- Department of Clinical Genetics, Erasmus MC, Rotterdam, The Netherlands
| | - E H Hoefsloot
- Department of Clinical Genetics, Erasmus MC, Rotterdam, The Netherlands
| | | | - E A M Mylanus
- Department of Otorhinolaryngology, Radboudumc, Nijmegen, The Netherlands
| | - C P Lanting
- Department of Otorhinolaryngology, Radboudumc, Nijmegen, The Netherlands
| | - R J E Pennings
- Department of Otorhinolaryngology, Radboudumc, Nijmegen, The Netherlands.
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