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Danilchenko VY, Zytsar MV, Maslova EA, Orishchenko KE, Posukh OL. Insight into the Natural History of Pathogenic Variant c.919-2A>G in the SLC26A4 Gene Involved in Hearing Loss: The Evidence for Its Common Origin in Southern Siberia (Russia). Genes (Basel) 2023; 14:genes14040928. [PMID: 37107686 PMCID: PMC10137394 DOI: 10.3390/genes14040928] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2023] [Revised: 04/10/2023] [Accepted: 04/12/2023] [Indexed: 04/29/2023] Open
Abstract
Pathogenic variants in the SLC26A4 gene leading to nonsyndromic recessive deafness (DFNB4), or Pendred syndrome, are some of the most common causes of hearing loss worldwide. Earlier, we found a high proportion of SLC26A4-related hearing loss with prevailing pathogenic variant c.919-2A>G (69.3% among all mutated SLC26A4 alleles that have been identified) in Tuvinian patients belonging to the indigenous Turkic-speaking Siberian people living in the Tyva Republic (Southern Siberia, Russia), which implies a founder effect in the accumulation of c.919-2A>G in Tuvinians. To evaluate a possible common origin of c.919-2A>G, we genotyped polymorphic STR and SNP markers, intragenic and flanking SLC26A4, in patients homozygous for c.919-2A>G and in healthy controls. The common STR and SNP haplotypes carrying c.919-2A>G were revealed, which convincingly indicates the origin of c.919-2A>G from a single ancestor, supporting a crucial role of the founder effect in the c.919-2A>G prevalence in Tuvinians. Comparison analysis with previously published data revealed the identity of the small SNP haplotype (~4.5 kb) in Tuvinian and Han Chinese carriers of c.919-2A>G, which suggests their common origin from founder chromosomes. We assume that c.919-2A>G could have originated in the geographically close territories of China or Tuva and subsequently spread to other regions of Asia. In addition, the time intervals of the c.919-2A>G occurrence in Tuvinians were roughly estimated.
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Affiliation(s)
- Valeriia Yu Danilchenko
- Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia
- Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Marina V Zytsar
- Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia
| | - Ekaterina A Maslova
- Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia
- Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Konstantin E Orishchenko
- Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia
- Novosibirsk State University, 630090 Novosibirsk, Russia
| | - Olga L Posukh
- Federal Research Center Institute of Cytology and Genetics, Siberian Branch of the Russian Academy of Sciences, 630090 Novosibirsk, Russia
- Novosibirsk State University, 630090 Novosibirsk, Russia
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Tawalbeh M, Aburizeg D, Abu Alragheb BO, Alaqrabawi WS, Dardas Z, Srour L, Altarayra BH, Zayed AA, El Omari Z, Azab B. SLC26A4 Phenotypic Variability Influences Intra- and Inter-Familial Diagnosis and Management. Genes (Basel) 2022; 13:genes13122192. [PMID: 36553459 PMCID: PMC9778369 DOI: 10.3390/genes13122192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2022] [Revised: 11/01/2022] [Accepted: 11/17/2022] [Indexed: 11/25/2022] Open
Abstract
SLC26A4 is one of the most common genes causing autosomal recessive non-syndromic sensorineural hearing loss (SNHL). It has been reported to cause Pendred Syndrome (PDS) and DFNB4 which is deafness with enlarged vestibular aqueduct (EVA). However, mutated SLC26A4 is not conclusive for having either DFNB4 or PDS. Three unrelated Jordanian families consisting of eight affected individuals with congenital bilateral hearing loss (HL) participated in this study. Whole-exome and Sanger sequencing were performed to investigate the underlying molecular etiology of HL. Further clinical investigations, including laboratory blood workup for the thyroid gland, CT scan for the temporal bone, and thyroid ultrasound were performed. Three disease-causing variants were identified in SLC26A4 in the three families, two of which were novel. Two families had a novel pathogenic homozygous splice-site accepter variant (c.165-1G>C), while the third family had compound heterozygous pathogenic variants (c.1446G>A; p.Trp482* and c.304G>A; p.Gly102Arg). Our approach helped in redirecting the diagnosis of several affected members of three different families from non-syndromic HL to syndromic HL. Two of the affected individuals had typical PDS, one had DFNB4, while the rest had atypical PDS. Our work emphasized the intra- and inter-familial variability of SLC26A4-related phenotypes. In addition, we highlighted the variable phenotypic impact of SLC26A4 on tailoring a personalized healthcare management.
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Affiliation(s)
- Mohamed Tawalbeh
- Department of Special Surgery, Jordan University Hospital, Amman 11942, Jordan
- Correspondence: (M.T.); (B.A.)
| | - Dunia Aburizeg
- Department of Pathology and Microbiology and Forensic Medicine, School of Medicine, The University of Jordan, Amman 11942, Jordan
| | - Bayan O. Abu Alragheb
- Department of Pathology and Microbiology and Forensic Medicine, School of Medicine, The University of Jordan, Amman 11942, Jordan
| | - Wala Sami Alaqrabawi
- Hearing and Speech Department, School of Rehabilitation Sciences, The University of Jordan, Amman 11942, Jordan
- Audiology Department, Faculty of Medical Sciences, Hacettepe University, Ankara 06100, Turkey
| | - Zain Dardas
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Luma Srour
- Department of Pathology and Microbiology and Forensic Medicine, School of Medicine, The University of Jordan, Amman 11942, Jordan
| | | | - Ayman A. Zayed
- Division of Endocrinology, Diabetes & Metabolism, Department of Internal Medicine, Jordan University Hospital, Amman 11942, Jordan
| | - Zaid El Omari
- Otolaryngology, Head and Neck Surgery Department, Jordanian Royal Medical Services, Amman 11855, Jordan
| | - Bilal Azab
- Department of Pathology and Microbiology and Forensic Medicine, School of Medicine, The University of Jordan, Amman 11942, Jordan
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, NY 10032, USA
- Correspondence: (M.T.); (B.A.)
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Azadegan-Dehkordi F, Koohiyan M, Hoseini M. An update on autosomal recessive hearing loss and loci involved in it. INDIAN JOURNAL OF OTOLOGY 2022. [DOI: 10.4103/indianjotol.indianjotol_115_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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4
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Koohiyan M, Hashemzadeh-Chaleshtori M, Tabatabaiefar MA. Molecular diagnosis of SLC26A4-related hereditary hearing loss in a group of patients from two provinces of Iran. Intractable Rare Dis Res 2021; 10:23-30. [PMID: 33614372 PMCID: PMC7882080 DOI: 10.5582/irdr.2020.03090] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
The SLC26A4 gene has been described as the second gene involved in most cases of autosomal recessive non-syndromic hearing loss (ARNSHL), after GJB2. Over 500 different SLC26A4 mutations have been reported, with each ethnic population having its own distinctive mutations. Here, we aimed to determine the frequency and mutation profile of the SLC26A4 gene from two different provinces (center and west) of Iran. This study included 50 nuclear families with two or more siblings segregating presumed ARNSHL. All affected tested negative for mutations in GJB2 at the DFNB1 locus and were therefore screened for autozygosity by descent using short tandem repeat polymorphisms (STRPs) of DFNB4. Sanger sequencing was performed to screen the 20 exons of the SLC26A4 gene for the families linked to this locus. In silico analyses were also performed using available software tools. Four out of 25 (16%) and 3 of 25 (12%) studied families of Isfahan and Hamedan provinces, respectively. were linked to DFNB4. Sanger sequencing led to the identification of six different mutations, one of which (c.919-2A>G) was recurrent and accounted for 31% of all mutant alleles. One out of 7 (14.3%) families with mutations were confirmed to be Pendred syndrome (PS). The SLC26A4 mutations have a high carrying rate in ARNSHL Iranian patients. The identification of a disease causing mutation can be used to establish a genotypic diagnosis and provide important information to the patients and their families.
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Affiliation(s)
- Mahbobeh Koohiyan
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
- Cancer Research Center, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Morteza Hashemzadeh-Chaleshtori
- Cellular and Molecular Research Center, Basic Health Research Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Mohammad Amin Tabatabaiefar
- Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Isfahan, Iran
- Pediatric Inherited Diseases Research Center, Research Institute for Primordial Prevention of Noncommunicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran
- Address correspondence to:Mohammad Amin Tabatabaiefar, Department of Genetics and Molecular Biology, School of Medicine, Isfahan University of Medical Sciences, Hezarjarib St., Isfahan 81746-7346, Iran. E-mail:
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Hashemzadeh-Chaleshtori M, Azadegan-Dehkordi F, Ashrafi K, Mobini G, Yazdanpanahi N, Shirzad M, Farrokhi E. Detection of two pathogenesis previously unreported myosin xva pathogenic variants in two large Iranian pedigrees with autosomal recessive nonsyndromic hearing loss. INDIAN JOURNAL OF OTOLOGY 2021. [DOI: 10.4103/indianjotol.indianjotol_73_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Improving the Management of Patients with Hearing Loss by the Implementation of an NGS Panel in Clinical Practice. Genes (Basel) 2020; 11:genes11121467. [PMID: 33297549 PMCID: PMC7762334 DOI: 10.3390/genes11121467] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 12/02/2020] [Accepted: 12/03/2020] [Indexed: 12/15/2022] Open
Abstract
A cohort of 128 patients from 118 families diagnosed with non-syndromic or syndromic hearing loss (HL) underwent an exhaustive clinical evaluation. Molecular analysis was performed using targeted next-generation sequencing (NGS) with a custom panel that included 59 genes associated with non-syndromic HL or syndromic HL. Variants were prioritized according to the minimum allele frequency and classified according to the American College of Medical Genetics and Genomics guidelines. Variant(s) responsible for the disease were detected in a 40% of families including autosomal recessive (AR), autosomal dominant (AD) and X-linked patterns of inheritance. We identified pathogenic or likely pathogenic variants in 26 different genes, 15 with AR inheritance pattern, 9 with AD and 2 that are X-linked. Fourteen of the found variants are novel. This study highlights the clinical utility of targeted NGS for sensorineural hearing loss. The optimal panel for HL must be designed according to the spectrum of the most represented genes in a given population and the laboratory capabilities considering the pressure on healthcare.
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Kınoğlu K, Orhan KS, Kara H, Öztürk O, Polat B, Aydoğan H, Çelik M, Ceviz AB, Güldiken Y. Investigation of DFNB4 SLC26A4 mutation in patients with enlarged vestibular aquaduct. Int J Pediatr Otorhinolaryngol 2020; 138:110379. [PMID: 33152970 DOI: 10.1016/j.ijporl.2020.110379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 08/02/2020] [Accepted: 09/09/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVES Mutations of the SLC26A4 gene causing enlarged vestibular aqueduct (EVA) syndrome have not yet been fully elucidated. The study aimed to investigate SLC26A4 mutations in patients with EVA syndrome in the Turkish population. Identifying these mutations may play an essential role in determining the prognosis, follow-up, and management options of these patients. METHODS Whole exome sequencing and/or Sanger sequencing of SLC26A4 in 22 patients with sensorineural hearing loss associated with isolated EVA without inner ear anomalies, and 22 controls were performed. RESULTS Twenty-two patients and 22 control subjects were included in the study. The onset of hearing loss was pre-lingual in 15 patients, and post-lingual in 7. The mean (standard deviation) vestibular aqueduct width of the patients was 3.23 mm (1.28). Twenty SLC26A4 variants, 15 of them unique, were identified in 22 patients. Among them, seven variants were heterozygous, and 13 were homozygous. The variants p.E37X (c.109G > T), p.Y27H (c.79T > C), p.C706Y (c.2117G > A) have not been previously reported. CONCLUSION The detection of rare and previously unreported mutations in our study showed that studies with a larger number of patients with EVA might reveal more role of the SLC26A4 gene. Besides, to understand the etiopathogenesis of the disease, other related genes also should be investigated.
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Affiliation(s)
- Kubilay Kınoğlu
- Istanbul University, Aziz Sancar Institute of Experimental Medicine, Turkey
| | - Kadir Serkan Orhan
- Istanbul University, Istanbul Faculty of Medicine, Department of Otorhinolaryngology
| | - Hakan Kara
- Istanbul University, Istanbul Faculty of Medicine, Department of Otorhinolaryngology.
| | - Oğuz Öztürk
- Istanbul University, Aziz Sancar Institute of Experimental Medicine, Turkey
| | - Beldan Polat
- Istanbul University, Istanbul Faculty of Medicine, Department of Otorhinolaryngology
| | - Hülya Aydoğan
- Istanbul University, Aziz Sancar Institute of Experimental Medicine, Turkey
| | - Mehmet Çelik
- Istanbul University, Istanbul Faculty of Medicine, Department of Otorhinolaryngology
| | - Ayşe Begüm Ceviz
- Istanbul University, Aziz Sancar Institute of Experimental Medicine, Turkey
| | - Yahya Güldiken
- Istanbul University, Istanbul Faculty of Medicine, Department of Otorhinolaryngology
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Budde BS, Aly MA, Mohamed MR, Breß A, Altmüller J, Motameny S, Kawalia A, Thiele H, Konrad K, Becker C, Toliat MR, Nürnberg G, Sayed EAF, Mohamed ES, Pfister M, Nürnberg P. Comprehensive molecular analysis of 61 Egyptian families with hereditary nonsyndromic hearing loss. Clin Genet 2020; 98:32-42. [DOI: 10.1111/cge.13754] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 03/24/2020] [Accepted: 04/06/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Birgit S. Budde
- Cologne Center for Genomics University of Cologne Cologne Germany
| | - Maha Abdelgaber Aly
- Cologne Center for Genomics University of Cologne Cologne Germany
- Audiology Unit, Department of Otolaryngology, Faculty of Medicine Assiut University Egypt
| | - Mostafa R. Mohamed
- Audiology Unit, Department of Otolaryngology, Faculty of Medicine Assiut University Egypt
| | - Andreas Breß
- Department of Otolaryngology University of Tübingen Tübingen Germany
| | - Janine Altmüller
- Cologne Center for Genomics University of Cologne Cologne Germany
| | - Susanne Motameny
- Cologne Center for Genomics University of Cologne Cologne Germany
| | - Amit Kawalia
- Cologne Center for Genomics University of Cologne Cologne Germany
| | - Holger Thiele
- Cologne Center for Genomics University of Cologne Cologne Germany
| | - Kathryn Konrad
- Cologne Center for Genomics University of Cologne Cologne Germany
| | - Christian Becker
- Cologne Center for Genomics University of Cologne Cologne Germany
| | | | - Gudrun Nürnberg
- Cologne Center for Genomics University of Cologne Cologne Germany
| | | | - Enass Sayed Mohamed
- Audiology Unit, Department of Otolaryngology, Faculty of Medicine Assiut University Egypt
| | - Markus Pfister
- Department of Otolaryngology University of Tübingen Tübingen Germany
- HNO Sarnen GmbH & Swisstinnitus AG Sarnen Switzerland
| | - Peter Nürnberg
- Cologne Center for Genomics University of Cologne Cologne Germany
- Center for Molecular Medicine Cologne University of Cologne Cologne Germany
- ATLAS Biolabs GmbH Berlin Germany
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Koohiyan M. Next generation sequencing and genetics of hereditary hearing loss in the iranian population: New insights from a systematic review. Int J Pediatr Otorhinolaryngol 2020; 129:109756. [PMID: 31704577 DOI: 10.1016/j.ijporl.2019.109756] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 10/25/2019] [Accepted: 10/26/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Hereditary hearing loss (HL) as a common disorder is genetically heterogeneous, which poses a challenge for clinical and molecular diagnosis. Next-generation sequencing (NGS) technologies have proven to be the best solution for mutational screening, even though it is not always conclusive. Here, we have reviewed the results of previously published data on HL mutations identified with NGS, as well as the efficiency of this technology in detecting HL in Iran. METHODS A systematic literature review of the PubMed, Google Scholar, Web of Science, and Science Direct databases were conducted for articles published before May 2019. The primary data of these studies, including the number of samples, mutation frequency and so on were extracted. RESULTS Seventy-five articles were reviewed, and 10 met our inclusion criteria. Totally 432 unrelated families were included and analyzed for the type and prevalence of the gene mutations and pathogenic variants were discovered in 34 non-syndromic HL (NSHL) genes. Altogether 237 different genetic mutations were detected. However, p. Gln1576Stop in PCDH15 was the most common mutation accounting for 1% of the populations studied. NGS platforms have yielded only a 47.1% molecular diagnosis rate for NSHL etiologies in the Iranian population, which is significantly lower than that identified in the other part of the Middle East. CONCLUSION The results showed that NGS platforms can greatly assist and enhance HL diagnosis and improve molecular diagnostic outcome. However, researchers were unable to provide 53% of their Iranian cohort with a molecular diagnosis for their HL. It seems that many rare genes are responsible for the majority of HL in the Iranian cohort. Future explorative investigations utilizing NGS technologies, such as WES, into the Iranian population are warranted.
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Affiliation(s)
- Mahbobeh Koohiyan
- Cancer Research Center, Shahrekord University of Medical Sciences, Shahrekord, Iran.
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10
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Zeinali S, Davoudi-Dehaghani E, Mahdieh N, Shirkavand A, Bagherian H, DabbaghBagheri S. SLC26A4 pathogenic variants as a third cause of hearing loss: Role of three exons in DFNB4 deafness in Iran. INDIAN JOURNAL OF OTOLOGY 2019. [DOI: 10.4103/indianjotol.indianjotol_36_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Richard EM, Santos-Cortez RLP, Faridi R, Rehman AU, Lee K, Shahzad M, Acharya A, Khan AA, Imtiaz A, Chakchouk I, Takla C, Abbe I, Rafeeq M, Liaqat K, Chaudhry T, Bamshad MJ, Schrauwen I, Khan SN, Morell RJ, Zafar S, Ansar M, Ahmed ZM, Ahmad W, Riazuddin S, Friedman TB, Leal SM, Riazuddin S. Global genetic insight contributed by consanguineous Pakistani families segregating hearing loss. Hum Mutat 2019; 40:53-72. [PMID: 30303587 PMCID: PMC6296877 DOI: 10.1002/humu.23666] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Revised: 10/04/2018] [Accepted: 10/07/2018] [Indexed: 12/14/2022]
Abstract
Consanguineous Pakistani pedigrees segregating deafness have contributed decisively to the discovery of 31 of the 68 genes associated with nonsyndromic autosomal recessive hearing loss (HL) worldwide. In this study, we utilized genome-wide genotyping, Sanger and exome sequencing to identify 163 DNA variants in 41 previously reported HL genes segregating in 321 Pakistani families. Of these, 70 (42.9%) variants identified in 29 genes are novel. As expected from genetic studies of disorders segregating in consanguineous families, the majority of affected individuals (94.4%) are homozygous for HL-associated variants, with the other variants being compound heterozygotes. The five most common HL genes in the Pakistani population are SLC26A4, MYO7A, GJB2, CIB2 and HGF, respectively. Our study provides a profile of the genetic etiology of HL in Pakistani families, which will allow for the development of more efficient genetic diagnostic tools, aid in accurate genetic counseling, and guide application of future gene-based therapies. These findings are also valuable in interpreting pathogenicity of variants that are potentially associated with HL in individuals of all ancestries. The Pakistani population, and its infrastructure for studying human genetics, will continue to be valuable to gene discovery for HL and other inherited disorders.
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Affiliation(s)
- Elodie M. Richard
- Department of Otorhinolaryngology Head & Neck Surgery, School of Medicine, University of Maryland, Baltimore, MD, 21201, USA
| | - Regie LP. Santos-Cortez
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Rabia Faridi
- Laboratory of Molecular Genetics, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD, 20892, USA
- National Center for Excellence in Molecular Biology, University of the Punjab, Lahore 53700, Pakistan
| | - Atteeq U. Rehman
- Laboratory of Molecular Genetics, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Kwanghyuk Lee
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Mohsin Shahzad
- Department of Otorhinolaryngology Head & Neck Surgery, School of Medicine, University of Maryland, Baltimore, MD, 21201, USA
- Shaheed Zulfiqar Ali Bhutto Medical University, Pakistan Institute of Medical Sciences, Islamabad, 44000, Pakistan
| | - Anushree Acharya
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Asma A. Khan
- National Center for Excellence in Molecular Biology, University of the Punjab, Lahore 53700, Pakistan
| | - Ayesha Imtiaz
- Laboratory of Molecular Genetics, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Imen Chakchouk
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Christina Takla
- Laboratory of Molecular Genetics, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Izoduwa Abbe
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Maria Rafeeq
- National Center for Excellence in Molecular Biology, University of the Punjab, Lahore 53700, Pakistan
| | - Khurram Liaqat
- Department of Biotechnology, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Taimur Chaudhry
- Laboratory of Molecular Genetics, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Michael J. Bamshad
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, USA
| | | | - Isabelle Schrauwen
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Shaheen N. Khan
- National Center for Excellence in Molecular Biology, University of the Punjab, Lahore 53700, Pakistan
| | - Robert J. Morell
- The Genomics and Computational Biology Core, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD, 20892
| | - Saba Zafar
- Institute of Molecular Biology and Biotechnology, Bahauddin Zakariya University, Multan, 59300, Pakistan
| | - Muhammad Ansar
- Department of Biotechnology, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Zubair M. Ahmed
- Department of Otorhinolaryngology Head & Neck Surgery, School of Medicine, University of Maryland, Baltimore, MD, 21201, USA
| | - Wasim Ahmad
- Department of Biotechnology, Faculty of Biological Sciences, Quaid-i-Azam University, Islamabad, 45320, Pakistan
| | - Sheik Riazuddin
- Shaheed Zulfiqar Ali Bhutto Medical University, Pakistan Institute of Medical Sciences, Islamabad, 44000, Pakistan
- Allama Iqbal Medical College, University of Health Sciences, Lahore, 54500, Pakistan
| | - Thomas B. Friedman
- Laboratory of Molecular Genetics, National Institute on Deafness and Other Communication Disorders, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Suzanne M. Leal
- Center for Statistical Genetics, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, 77030, USA
| | - Saima Riazuddin
- Department of Otorhinolaryngology Head & Neck Surgery, School of Medicine, University of Maryland, Baltimore, MD, 21201, USA
- Shaheed Zulfiqar Ali Bhutto Medical University, Pakistan Institute of Medical Sciences, Islamabad, 44000, Pakistan
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Azadegan‐Dehkordi F, Ahmadi R, Koohiyan M, Hashemzadeh‐Chaleshtori M. Update of spectrum c.35delG and c.‐23+1G>A mutations on the
GJB2
gene in individuals with autosomal recessive nonsyndromic hearing loss. Ann Hum Genet 2018; 83:1-10. [DOI: 10.1111/ahg.12284] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 08/01/2018] [Accepted: 08/06/2018] [Indexed: 12/31/2022]
Affiliation(s)
- Fatemeh Azadegan‐Dehkordi
- Cellular and Molecular Research Center, Basic Health Sciences Institute Shahrekord University of Medical Sciences Shahrekord Iran
| | - Reza Ahmadi
- Clinical Biochemistry Research Center, Basic Health Sciences Institute Shahrekord University of Medical Sciences Shahrekord Iran
| | - Mahbobeh Koohiyan
- Medical Plants Research Center, Basic Health Sciences Institute Shahrekord University of Medical Sciences Shahrekord Iran
| | - Morteza Hashemzadeh‐Chaleshtori
- Cellular and Molecular Research Center, Basic Health Sciences Institute Shahrekord University of Medical Sciences Shahrekord Iran
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Ghasemnejad T, Shekari Khaniani M, Zarei F, Farbodnia M, Mansoori Derakhshan S. An update of common autosomal recessive non-syndromic hearing loss genes in Iranian population. Int J Pediatr Otorhinolaryngol 2017; 97:113-126. [PMID: 28483220 DOI: 10.1016/j.ijporl.2017.04.007] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Revised: 04/03/2017] [Accepted: 04/04/2017] [Indexed: 11/16/2022]
Abstract
Autosomal-recessive genes are responsible for about 80% of the hereditary non-syndromic hearing loss (NSHL) cases. In Iran, due to consanguineous marriages, NSHL is the second most frequent disability after intellectual disability, occurring one in 16 individuals. Enormous heterogeneity in the genetic pathology of hearing loss causes a major challenge in identification of responsible genes. In Iran, GJB2 is responsible for the most cases of pre-lingual and non-syndromic hearing loss (with frequency of 16.7%) which followed by other genes with lower frequency. Although several studies have indicated that a large proportion of both syndromic and non-syndromic hearing loss in Iranian populations are caused by defects in just a few genes, new detection strategies such as NGS (Next-generation sequencing) have increased the spectrum of responsible mutations. However, by applying this technique in Iran patients screening, the role of lots of novel related genes have been reported. In this review, we aim to describe function of these genes and their contribution to non-syndromic genetic hearing loss in Iranian population and we classify the genes by their functions.
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Affiliation(s)
- Tohid Ghasemnejad
- Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Medical Genetic, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | | | - Fatemeh Zarei
- Department of Stem Cells and Developmental Biology at Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Mina Farbodnia
- Department of Cellular and Molecular Biology, Faculty of Sciences, Saba University, Urmia, Iran
| | - Sima Mansoori Derakhshan
- Neurosciences Research Center, Tabriz University of Medical Sciences, Tabriz, Iran; Department of Medical Genetic, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran.
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14
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Beheshtian M, Babanejad M, Azaiez H, Bazazzadegan N, Kolbe D, Sloan-Heggen C, Arzhangi S, Booth K, Mohseni M, Frees K, Azizi MH, Daneshi A, Farhadi M, Kahrizi K, Smith RJ, Najmabadi H. Heterogeneity of Hereditary Hearing Loss in Iran: a Comprehensive Review. ARCHIVES OF IRANIAN MEDICINE 2017; 19:720-728. [PMID: 27743438 DOI: 0161910/aim.0010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A significant contribution to the causes of hereditary hearing impairment comes from genetic factors. More than 120 genes and 160 loci have been identified to be involved in hearing impairment. Given that consanguine populations are more vulnerable to most inherited diseases, such as hereditary hearing loss (HHL), the genetic picture of HHL among the Iranian population, which consists of at least eight ethnic subgroups with a high rate of intermarriage, is expected to be highly heterogeneous. Using an electronic literature review through various databases such as PubMed, MEDLINE, and Scopus, we review the current picture of HHL in Iran. In this review, we present more than 39 deafness genes reported to cause non-syndromic HHL in Iran, of which the most prevalent causative genes include GJB2, SLC26A4, MYO15A, and MYO7A. In addition, we highlight some of the more common genetic causes of syndromic HHL in Iran. These results are of importance for further investigation and elucidation of the molecular basis of HHL in Iran and also for developing a national diagnostic tool tailored to the Iranian context enabling early and efficient diagnosis of hereditary hearing impairment.
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Affiliation(s)
- Maryam Beheshtian
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Mojgan Babanejad
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Hela Azaiez
- Department of Otolaryngology, University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA
| | - Niloofar Bazazzadegan
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Diana Kolbe
- Department of Otolaryngology, University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA
| | - Christina Sloan-Heggen
- Department of Otolaryngology, University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA
| | - Sanaz Arzhangi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Kevin Booth
- Department of Otolaryngology, University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA
| | - Marzieh Mohseni
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Kathy Frees
- Department of Otolaryngology, University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA
| | | | - Ahmad Daneshi
- Head and Neck Surgery Department and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Mohammad Farhadi
- Head and Neck Surgery Department and Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Kimia Kahrizi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
| | - Richard Jh Smith
- Department of Otolaryngology, University of Iowa Hospitals and Clinics, Iowa City, Iowa, USA
| | - Hossein Najmabadi
- Genetics Research Center, University of Social Welfare and Rehabilitation Sciences, Tehran, Iran
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15
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Genetic Effects on Sensorineural Hearing Loss and Evidence-based Treatment for Sensorineural Hearing Loss. ACTA ACUST UNITED AC 2016; 30:179-88. [PMID: 26564418 DOI: 10.1016/s1001-9294(15)30044-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In this article, the mechanism of inheritance behind inherited hearing loss and genetic susceptibility in noise-induced hearing loss are reviewed. Conventional treatments for sensorineural hearing loss (SNHL), i.e. hearing aid and cochlear implant, are effective for some cases, but not without limitations. For example, they provide little benefit for patients of profound SNHL or neural hearing loss, especially when the hearing loss is in poor dynamic range and with low frequency resolution. We emphasize the most recent evidence-based treatment in this field, which includes gene therapy and allotransplantation of stem cells. Their promising results have shown that they might be options of treatment for profound SNHL and neural hearing loss. Although some treatments are still at the experimental stage, it is helpful to be aware of the novel therapies and endeavour to explore the feasibility of their clinical application.
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