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Sekulic S, Lemajic-Komazec S, Sokolovac I, Topalidou A, Gouni O, Petkovic B, Martac L, Kekovic G, Redzek-Mudrinic T, Capo I. Inner Ear Malformations in Congenital Deafness Are Not Associated with Increased Risk of Breech Presentation. Fetal Pediatr Pathol 2021; 40:674-684. [PMID: 32159401 DOI: 10.1080/15513815.2020.1737993] [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] [Indexed: 10/24/2022]
Abstract
BackgroundThere is speculation that an immature vestibular system may be associated with breech presentation at delivery. Our aim was to determine whether syndromes with congenital inner ear malformations were accompanied by a higher frequency of breech presentation/malpresentations than in the general population (2%-3%). Methods: A review was conducted for published literature using PubMed/MEDLINE (1936-2016), to determine frequency of breech presentation and transverse lie in cases with congenital deafness (Michel aplasia, Wildervanck syndrome, Mondini-Alexander dysplasia, Waardenburg syndrome, CHARGE syndrome, Large vestibular aqueductal syndrome, Pendred syndrome, Oculo-aurico-vertebral spectrum, Jervel and Lange-Nielsen syndrome, Usher syndrome, and Scheibe dysplasia) and vestibular nerve aplasia. Results: Identified were total of 122 cases. The frequency of breech presentation was 1.64%, and of transverse lie 1.64%, giving a total of 3.28% malpresentations. Conclusion: The results of the study suggest that congenital malformations of the vestibular apparatus are not associated with the increased risk of breech presentation at delivery.
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Affiliation(s)
- Slobodan Sekulic
- Department of Neurology, Clinical Center of Vojvodina, Novi Sad, Serbia.,Medical Faculty Novi Sad, University of Novi Sad, Serbia
| | - Slobodanka Lemajic-Komazec
- Medical Faculty Novi Sad, University of Novi Sad, Serbia.,Department of Otorhinolaryngology, Clinical Center of Vojvodina, Novi Sad, Serbia
| | - Ivana Sokolovac
- Medical Faculty Novi Sad, University of Novi Sad, Serbia.,Department of Otorhinolaryngology, Clinical Center of Vojvodina, Novi Sad, Serbia
| | - Anastasia Topalidou
- School of Community Health and Midwifery, Faculty of Health and Wellbeing, University of Central Lancashire, Research in Childbirth and Health Unit, Preston, United Kingdom of Great Britain and Northern Ireland
| | - Olga Gouni
- National and Kapodistrian University of Athens, Athens, Greece
| | - Branka Petkovic
- Department of Neurophysiology, Institute for Biological Research Sinisa Stankovic, Belgrade, Serbia
| | - Ljiljana Martac
- Department of Neurophysiology, Institute for Biological Research Sinisa Stankovic, Belgrade, Serbia
| | - Goran Kekovic
- Department of Electrical and Computer Engineering, Faculty of Maritime, Academic study, Belgrade, Serbia
| | - Tatjana Redzek-Mudrinic
- Department of Neuropediatrics, Child and Youth Health Care Institute of Vojvodina, Novi Sad, Serbia
| | - Ivan Capo
- Medical Faculty Novi Sad, University of Novi Sad, Serbia
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Soh LM, Druce M, Grossman AB, Differ AM, Rajput L, Bitner-Glindzicz M, Korbonits M. Evaluation of genotype-phenotype relationships in patients referred for endocrine assessment in suspected Pendred syndrome. Eur J Endocrinol 2015; 172:217-26. [PMID: 25394566 DOI: 10.1530/eje-14-0679] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
DESIGN Patients with Pendred syndrome have genotypic and phenotypic variability, leading to challenges in definitive diagnosis. Deaf children with enlarged vestibular aqueducts are often subjected to repeated investigations when tests for mutations in SLC26A4 are abnormal. This study provides genotype and phenotype information from patients with suspected Pendred syndrome referred to a single clinical endocrinology unit. METHODS A retrospective analysis of 50 patients with suspected Pendred syndrome to investigate the correlation between genetic, perchlorate discharge test (PDT) and endocrine status. RESULTS Eight patients with monoallelic SLC26A4 mutations had normal PDT. Of the 33 patients with biallelic mutations, ten of 12 patients with >30% discharge developed hypothyroidism. In our cohort, c.626G>T and c.3-2A>G result in milder clinical presentations with lower median perchlorate discharge of 9.3% (interquartile range 4-15%) compared with 40% (interquartile range 21-60%) for the remaining mutations. Eight novel mutations were detected. All patients with PDT <30% remained euthyroid to date, although the majority are still under the age of 30. There was a significant correlation between PDT and goitre size (R=0.61, P=0.0009) and the age of onset of hypothyroidism (R=-0.62, P=0.0297). In our population, the hazard of becoming hypothyroid increased by 7% per percentage point increase in PDT (P<0.001). CONCLUSION There is a correlation between SLC26A4 genotype and thyroid phenotype. If results hold true for larger patient numbers and longer follow-up, then for patients with monoallelic mutations, PDT could be unnecessary. Patients with biallelic mutations and PDT discharge >30% have a high risk of developing goitre and hypothyroidism, and should have lifelong monitoring.
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Affiliation(s)
- Lip Min Soh
- Department of EndocrinologyBarts and the London School of Medicine and Dentistry, William Harvey Research Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UKOxford Centre for DiabetesEndocrinology and Metabolism, University of Oxford, Oxford, UKNorth East Thames Regional Genetics Service LaboratoryDepartment of Audiovestibular MedicineGreat Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UKClinical and Molecular Genetics UnitUCL Institute of Child Health, London WC1N 1EH, UKClinical Genetics UnitGreat Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK
| | - Maralyn Druce
- Department of EndocrinologyBarts and the London School of Medicine and Dentistry, William Harvey Research Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UKOxford Centre for DiabetesEndocrinology and Metabolism, University of Oxford, Oxford, UKNorth East Thames Regional Genetics Service LaboratoryDepartment of Audiovestibular MedicineGreat Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UKClinical and Molecular Genetics UnitUCL Institute of Child Health, London WC1N 1EH, UKClinical Genetics UnitGreat Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK
| | - Ashley B Grossman
- Department of EndocrinologyBarts and the London School of Medicine and Dentistry, William Harvey Research Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UKOxford Centre for DiabetesEndocrinology and Metabolism, University of Oxford, Oxford, UKNorth East Thames Regional Genetics Service LaboratoryDepartment of Audiovestibular MedicineGreat Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UKClinical and Molecular Genetics UnitUCL Institute of Child Health, London WC1N 1EH, UKClinical Genetics UnitGreat Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK Department of EndocrinologyBarts and the London School of Medicine and Dentistry, William Harvey Research Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UKOxford Centre for DiabetesEndocrinology and Metabolism, University of Oxford, Oxford, UKNorth East Thames Regional Genetics Service LaboratoryDepartment of Audiovestibular MedicineGreat Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UKClinical and Molecular Genetics UnitUCL Institute of Child Health, London WC1N 1EH, UKClinical Genetics UnitGreat Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK
| | - Ann-Marie Differ
- Department of EndocrinologyBarts and the London School of Medicine and Dentistry, William Harvey Research Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UKOxford Centre for DiabetesEndocrinology and Metabolism, University of Oxford, Oxford, UKNorth East Thames Regional Genetics Service LaboratoryDepartment of Audiovestibular MedicineGreat Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UKClinical and Molecular Genetics UnitUCL Institute of Child Health, London WC1N 1EH, UKClinical Genetics UnitGreat Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK
| | - Liala Rajput
- Department of EndocrinologyBarts and the London School of Medicine and Dentistry, William Harvey Research Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UKOxford Centre for DiabetesEndocrinology and Metabolism, University of Oxford, Oxford, UKNorth East Thames Regional Genetics Service LaboratoryDepartment of Audiovestibular MedicineGreat Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UKClinical and Molecular Genetics UnitUCL Institute of Child Health, London WC1N 1EH, UKClinical Genetics UnitGreat Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK
| | - Maria Bitner-Glindzicz
- Department of EndocrinologyBarts and the London School of Medicine and Dentistry, William Harvey Research Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UKOxford Centre for DiabetesEndocrinology and Metabolism, University of Oxford, Oxford, UKNorth East Thames Regional Genetics Service LaboratoryDepartment of Audiovestibular MedicineGreat Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UKClinical and Molecular Genetics UnitUCL Institute of Child Health, London WC1N 1EH, UKClinical Genetics UnitGreat Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK Department of EndocrinologyBarts and the London School of Medicine and Dentistry, William Harvey Research Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UKOxford Centre for DiabetesEndocrinology and Metabolism, University of Oxford, Oxford, UKNorth East Thames Regional Genetics Service LaboratoryDepartment of Audiovestibular MedicineGreat Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UKClinical and Molecular Genetics UnitUCL Institute of Child Health, London WC1N 1EH, UKClinical Genetics UnitGreat Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK
| | - Márta Korbonits
- Department of EndocrinologyBarts and the London School of Medicine and Dentistry, William Harvey Research Institute, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UKOxford Centre for DiabetesEndocrinology and Metabolism, University of Oxford, Oxford, UKNorth East Thames Regional Genetics Service LaboratoryDepartment of Audiovestibular MedicineGreat Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UKClinical and Molecular Genetics UnitUCL Institute of Child Health, London WC1N 1EH, UKClinical Genetics UnitGreat Ormond Street Hospital for Children NHS Foundation Trust, London WC1N 3JH, UK
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Chen K, Wang X, Sun L, Jiang H. Screening of SLC26A4, FOXI1, KCNJ10, and GJB2 in bilateral deafness patients with inner ear malformation. Otolaryngol Head Neck Surg 2012; 146:972-8. [PMID: 22412181 DOI: 10.1177/0194599812439670] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
OBJECTIVE Bilateral nonsyndromic sensorineural hearing loss associated with inner ear malformation is closely related to genetics. SLC26A4 is considered to be the major involved gene. Recently, FOXI1 and KCNJ10 mutations have been linked to enlarged vestibular aqueducts and GJB2 mutations linked to temporal bone malformation. The authors aimed to investigate the mutation spectrums of these genes in Chinese patients with bilateral hearing impairment associated with inner ear malformation. STUDY DESIGN Cross-sectional study. SETTING Affiliated hospital of the university. SUBJECTS AND METHODS The authors analyzed the GJB2, SLC26A4, FOXI1, and KCNJ10 gene sequences in 43 patients presenting with bilateral hearing impairment associated with inner ear malformation using pyrosequencing and direct DNA sequencing. RESULTS In total, 74.4% (32/43) of patients carried at least 1 of 14 pathogenic SLC26A4 mutations, including 6 novel mutations and 4 polymorphisms. Patients with enlarged vestibular aqueducts had a higher rate of SLC26A4 mutation than Mondini dysplasia patients. No FOXI1 or KCNJ10 potential pathogenic mutation was present, and GJB2 biallelic pathogenic mutations were uncommon (2.3%; 1/43). No significant correlation was observed between the genotype and phenotype of SLC26A4 mutations. CONCLUSION SLC26A4 accounts for 74.4% of inner ear malformations in our cohort, whereas FOXI1, KCNJ10, and GJB2 mutations are not common. Other possible genes or external factors may contribute to this multibranch abnormality.
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Affiliation(s)
- Kaitian Chen
- Department of Otorhinolaryngology, the First Affiliated Hospital, Sun Yat-Sen University and Institute of Otorhinolaryngology, Sun Yat-sen University, Guangzhou, PR China
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