1
|
Rajput K, Akhtar U, Pagarkar W, Rajput S, Walder C, D'Arco F, Cochrane L, Nash R, Bitner-Glindzicz M, Omar R. Etiology of Childhood Profound Sensorineural Hearing Loss: The Role of Hearing Loss Gene Panel Testing. Otolaryngol Head Neck Surg 2024. [PMID: 38822754 DOI: 10.1002/ohn.838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 04/22/2024] [Accepted: 05/12/2024] [Indexed: 06/03/2024]
Abstract
OBJECTIVE Establishing the cause of hearing loss (HL) is important and rewarding, though not without its challenges. While our ability to identify the etiology for HL has improved with advances in scientific knowledge, a significant proportion of cases remain of unknown etiology. Recent protocol changes within the NHS Genomic Medicine Service support the utilization of the HL gene panel test, rather than individual gene tests. In light of these changes, determining the yield of these more extensive panel tests is important in informing future practice. STUDY DESIGN Retrospective study. SETTING The Cochlear Implant (CI) Department at Great Ormond Street Hospital (GOSH). METHODS Four hundred seventy-six children with profound HL were identified from a database of referrals to the GOSH CI Department. Data on etiology of HL including genetic diagnosis was collected from hospital notes on an electronic patient records system and hospital genetics database. RESULTS We identified a positive result in 163/476 (34%) cases through the gene panel test, representing an additional 19% yield to current level 1 investigations. Genetic HL, including both syndromic (including those not covered by the HL gene panel) and nonsyndromic (209/476, 44%) was the most common etiology in our cohort. Perinatal, intrauterine, ototoxicity, meningitis, and encephalitis categories altogether comprised 97/476 (20%) cases. CONCLUSION Gene panel testing provides significant additional yield over current level 1 investigations which include GJB2 testing only. This has far-reaching implications for how we optimize investigations into HL in children and counsel families, and for future early interventions.
Collapse
Affiliation(s)
- Kaukab Rajput
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - Umar Akhtar
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - Waheeda Pagarkar
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - Sarah Rajput
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - Claire Walder
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - Felice D'Arco
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - Lesley Cochrane
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - Robert Nash
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | | | - Rohani Omar
- Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
- University College London Hospitals NHS Foundation Trust, Royal National ENT and Eastman Dental Hospitals, London, UK
| |
Collapse
|
2
|
Neal SJ, Rajasekaran A, Jusić N, Taylor L, Read M, Alfandari D, Pignoni F, Moody SA. Using Xenopus to discover new candidate genes involved in BOR and other congenital hearing loss syndromes. JOURNAL OF EXPERIMENTAL ZOOLOGY. PART B, MOLECULAR AND DEVELOPMENTAL EVOLUTION 2024; 342:212-240. [PMID: 37830236 PMCID: PMC11014897 DOI: 10.1002/jez.b.23222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 08/15/2023] [Accepted: 09/14/2023] [Indexed: 10/14/2023]
Abstract
Hearing in infants is essential for brain development, acquisition of verbal language skills, and development of social interactions. Therefore, it is important to diagnose hearing loss soon after birth so that interventions can be provided as early as possible. Most newborns in the United States are screened for hearing deficits and commercially available next-generation sequencing hearing loss panels often can identify the causative gene, which may also identify congenital defects in other organs. One of the most prevalent autosomal dominant congenital hearing loss syndromes is branchio-oto-renal syndrome (BOR), which also presents with defects in craniofacial structures and the kidney. Currently, mutations in three genes, SIX1, SIX5, and EYA1, are known to be causative in about half of the BOR patients that have been tested. To uncover new candidate genes that could be added to congenital hearing loss genetic screens, we have combined the power of Drosophila mutants and protein biochemical assays with the embryological advantages of Xenopus, a key aquatic animal model with a high level of genomic similarity to human, to identify potential Six1 transcriptional targets and interacting proteins that play a role during otic development. We review our transcriptomic, yeast 2-hybrid, and proteomic approaches that have revealed a large number of new candidates. We also discuss how we have begun to identify how Six1 and co-factors interact to direct developmental events necessary for normal otic development.
Collapse
Affiliation(s)
- Scott J. Neal
- Department of Neuroscience and Physiology, Upstate Medical University, Syracuse, NY, USA
| | - Anindita Rajasekaran
- Department of Neuroscience and Physiology, Upstate Medical University, Syracuse, NY, USA
| | - Nisveta Jusić
- Department of Neuroscience and Physiology, Upstate Medical University, Syracuse, NY, USA
| | - Louis Taylor
- Department of Veterinary and Animal Sciences, University of Massachusetts Amherst, Amherst, MA, USA
| | - Mai Read
- Department of Veterinary and Animal Sciences, University of Massachusetts Amherst, Amherst, MA, USA
| | - Dominique Alfandari
- Department of Veterinary and Animal Sciences, University of Massachusetts Amherst, Amherst, MA, USA
| | - Francesca Pignoni
- Department of Neuroscience and Physiology, Upstate Medical University, Syracuse, NY, USA
| | - Sally A. Moody
- Department of Anatomy and Cell Biology, George Washington University, School of Medicine and Health Sciences, Washington, DC, USA
| |
Collapse
|
3
|
Brigande JV. Otoferlin gene therapy restores hearing in deaf children. Mol Ther 2024; 32:859-860. [PMID: 38522426 PMCID: PMC11163207 DOI: 10.1016/j.ymthe.2024.03.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2024] [Revised: 03/08/2024] [Accepted: 03/08/2024] [Indexed: 03/26/2024] Open
Affiliation(s)
- John V Brigande
- Oregon Hearing Research Center and Oregon National Primate Research Center, Oregon Health & Science University, Portland, OR, USA.
| |
Collapse
|
4
|
Kun L, Jiexiang H, Hua L, Junlin H, Yijun R, Lixian Z, Mingqiao C. Genetic screening of 15 hearing loss variants in 77,647 neonates with clinical follow-up. Mol Genet Genomic Med 2024; 12:e2324. [PMID: 38037722 PMCID: PMC10767602 DOI: 10.1002/mgg3.2324] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 11/03/2023] [Accepted: 11/10/2023] [Indexed: 12/02/2023] Open
Abstract
BACKGROUND To analyze the genotype distribution and frequency of hearing loss genes in newborn population and evaluate the clinical value of genetic screening policy in China. METHODS Genetic screening for hearing loss was offered to 84,029 neonates between March 2019 and December 2021, of whom 77,647 newborns accepted the screening program with one-year follow-up. The genotyping of 15 hot spot variants in GJB2, GJB3, SLC26A4, and MT-RNR1 was performed on microarray platform. RESULTS A total of 3.05% (2369/77,647) newborns carried at least one genetic hearing loss-associated variant, indicated for early preventive management. The carrier frequency of GJB2 gene was the highest, at 1.48% (1147/77,647), followed by SLC26A4 gene at 1.07% (831/77,647), and GJB3 gene at 0.23% (181/77,647). GJB2 c.235delC variant and SLC26A4 IVS7-2A>G variant were the most common allelic variants with allele frequency of 0.6304% (979/155,294) and 0.3992% (620/155,294), respectively. 10 children are identified as homozygous or compound heterozygous for pathogenic variants (4 in GJB2, 6 in SLC26A4), and 7 of these infants had passed the hearing screening. Following up of the genetically screened newborns revealed that genetic screening detected more hearing-impaired infants than hearing screening alone. Genetic screening helped identify the infants who had passed the initial hearing screening, and reduced time for diagnosis and intervention of hearing aid. In addition, we identified 234 newborns (0.30%, 234/77,647) susceptible to preventable aminoglycoside antibiotic ototoxicity undetectable by hearing screening. CONCLUSION We performed the largest-scale neonatal carrier screening for hearing loss genes in Southeast China. Our results indicated that genetic screening is an important complementation to conventional hearing screening. Our practice and experience may facilitate the application and development of neonatal genetic screening policy in mainland China.
Collapse
Affiliation(s)
- Lin Kun
- Prenatal Diagnosis Center, The Affiliated Hospital of Putian UniversityPutian UniversityPutianChina
- Newborn Screening CenterPutian Maternity and Child Health Care HospitalPutianChina
| | - Huang Jiexiang
- Prenatal Diagnosis Center, The Affiliated Hospital of Putian UniversityPutian UniversityPutianChina
| | - Lin Hua
- Prenatal Diagnosis Center, The Affiliated Hospital of Putian UniversityPutian UniversityPutianChina
| | - Han Junlin
- Department of PediatricsPutian Maternity and Child Health Care HospitalPutianChina
| | - Ruan Yijun
- Department of PediatricsPutian Maternity and Child Health Care HospitalPutianChina
| | - Zhang Lixian
- Newborn Screening CenterPutian Maternity and Child Health Care HospitalPutianChina
| | - Chen Mingqiao
- Prenatal Diagnosis Center, The Affiliated Hospital of Putian UniversityPutian UniversityPutianChina
- Newborn Screening CenterPutian Maternity and Child Health Care HospitalPutianChina
- Department of PediatricsPutian Maternity and Child Health Care HospitalPutianChina
| |
Collapse
|
5
|
Roncareggi S, Girardi K, Fioredda F, Pedace L, Arcuri L, Badolato R, Bonanomi S, Borlenghi E, Cirillo E, Coliva T, Consonni F, Conti F, Farruggia P, Gambineri E, Guerra F, Locatelli F, Mancuso G, Marzollo A, Masetti R, Micalizzi C, Onofrillo D, Piccini M, Pignata C, Raddi MG, Santini V, Vendemini F, Biondi A, Saettini F. A Nationwide Study of GATA2 Deficiency in Italy Reveals Novel Symptoms and Genotype-phenotype Association. J Clin Immunol 2023; 43:2192-2207. [PMID: 37837580 DOI: 10.1007/s10875-023-01583-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 09/10/2023] [Indexed: 10/16/2023]
Abstract
GATA2 deficiency is a rare disorder encompassing a broadly variable phenotype and its clinical picture is continuously evolving. Since it was first described in 2011, up to 500 patients have been reported. Here, we describe a cohort of 31 Italian patients (26 families) with molecular diagnosis of GATA2 deficiency. Patients were recruited contacting all the Italian Association of Pediatric Hematology and Oncology (AIEOP) centers, the Hematology Department in their institution and Italian societies involved in the field of vascular anomalies, otorhinolaryngology, dermatology, infectious and respiratory diseases. Median age at the time of first manifestation, molecular diagnosis and last follow-up visit was 12.5 (age-range, 2-52 years), 18 (age-range, 7-64 years) and 22 years (age-range, 3-64), respectively. Infections (39%), hematological malignancies (23%) and undefined cytopenia (16%) were the most frequent symptoms at the onset of the disease. The majority of patients (55%) underwent hematopoietic stem cell transplantation. During the follow-up rarer manifestations emerged. The clinical penetrance was highly variable, with the coexistence of severely affected pediatric patients and asymptomatic adults in the same pedigree. Two individuals remained asymptomatic at the last follow-up visit. Our study highlights new (pilonidal cyst/sacrococcygeal fistula, cholangiocarcinoma and gastric adenocarcinoma) phenotypes and show that lymphedema may be associated with null/regulatory mutations. Countrywide studies providing long prospective follow-up are essential to unveil the exact burden of rarer manifestations and the natural history in GATA2 deficiency.
Collapse
Affiliation(s)
- Samuele Roncareggi
- Fondazione IRCCS San Gerardo Dei Tintori, Monza, Italy
- Dipartimento Di Medicina E Chirurgia, Università Degli Studi Milano-Bicocca, Monza, Italy
| | - Katia Girardi
- Department of Pediatric Onco-Haematology and Cell and Gene Therapy, Ospedale Pediatrico Bambino Gesù, IRCCS, Rome, Italy
| | | | - Lucia Pedace
- Department of Pediatric Onco-Haematology and Cell and Gene Therapy, Ospedale Pediatrico Bambino Gesù, IRCCS, Rome, Italy
| | - Luca Arcuri
- U.O.C. Ematologia, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Raffaele Badolato
- Paediatrics Clinic and Institute for Molecular Medicine A. Nocivelli, Department of Clinical and Experimental Sciences, ASST- Spedali Civili of Brescia, University of Brescia, Brescia, Italy
| | | | - Erika Borlenghi
- U.O.C. Ematologia, ASST Spedali Civili Di Brescia, Brescia, Italy
| | - Emilia Cirillo
- Department of Translational Medical Sciences, Section of Pediatrics, Federico II University, Naples, Italy
| | | | - Filippo Consonni
- Department of Health Sciences, University of Florence, Florence, Italy
- Centre of Excellence, Division of Pediatric Oncology/Hematology, Meyer Children's Hospital IRCCS, Florence, Italy
| | - Francesca Conti
- Pediatric Unit, IRCCS Azienda Ospedaliero-Universitaria Di Bologna, Bologna, Italy
| | - Piero Farruggia
- Pediatric Hematology and Oncology Unit, Pediatric Department, ARNAS Civico, Di Cristina and Benfratelli Hospitals, Palermo, Italy
| | - Eleonora Gambineri
- Centre of Excellence, Division of Pediatric Oncology/Hematology, Meyer Children's Hospital IRCCS, Florence, Italy
- Department of Neurosciences, Psychology, Drug Research and Child Health (NEUROFARBA), University of Florence, Florence, Italy
| | - Fabiola Guerra
- Fondazione IRCCS San Gerardo Dei Tintori, Monza, Italy
- Dipartimento Di Medicina E Chirurgia, Università Degli Studi Milano-Bicocca, Monza, Italy
| | - Franco Locatelli
- Department of Pediatric Onco-Haematology and Cell and Gene Therapy, Ospedale Pediatrico Bambino Gesù, IRCCS, Rome, Italy
| | - Gaia Mancuso
- Unit of Immunology, Rheumatology, Allergy and Rare Diseases (UnIRAR), IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Antonio Marzollo
- Pediatric Hematology, Oncology and Stem Cell Transplant Division, Padua University Hospital, Via Giustiniani 3, 35128, Padua, Italy
| | - Riccardo Masetti
- Pediatric Oncology and Hematology Unit, IRCCS Azienda Ospedaliero Universitaria Di Bologna, Pediatric Hematology-Oncology Unit, Department of Medical and Surgical Sciences DIMEC, University of Bologna, Bologna, Italy
| | - Concetta Micalizzi
- U.O.S.D. Centro Trapianto Di Midollo Osseo, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Daniela Onofrillo
- UOSD Oncoematologia Pediatrica, Ospedale Civile Santo Spirito, Pescara, Italia
| | - Matteo Piccini
- Ematologia, DMSC, AOU Careggi, Università Di Firenze, Florence, Italy
| | - Claudio Pignata
- Department of Translational Medical Sciences, Section of Pediatrics, Federico II University, Naples, Italy
| | | | - Valeria Santini
- Ematologia, DMSC, AOU Careggi, Università Di Firenze, Florence, Italy
| | | | - Andrea Biondi
- Fondazione IRCCS San Gerardo Dei Tintori, Monza, Italy
- Dipartimento Di Medicina E Chirurgia, Università Degli Studi Milano-Bicocca, Monza, Italy
- Centro Tettamanti, Fondazione IRCCS San Gerardo Dei Tintori, Via Cadore, Monza, Italy
| | - Francesco Saettini
- Centro Tettamanti, Fondazione IRCCS San Gerardo Dei Tintori, Via Cadore, Monza, Italy.
| |
Collapse
|
6
|
Störbeck C, Young A, Moodley S, Ismail S. Audiological profile of deaf and hard-of-hearing children under six years old in the "HI HOPES cohort" in South Africa (2006-2011). Int J Audiol 2023; 62:845-852. [PMID: 35917406 DOI: 10.1080/14992027.2022.2101551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 06/17/2022] [Accepted: 07/10/2022] [Indexed: 11/05/2022]
Abstract
BACKGROUND This study concerns deaf children under six years in the South African HI HOPES Cohort. OBJECTIVE To examine their audiological profile, aetiological risk factors for infant hearing loss as well as the relationship between identification, amplification and socio-economic influences. DESIGN Using a cohort design, secondary data analysis of a pre-existing dataset demonstrated adequate representation of South African demographic characteristics. STUDY SAMPLE A total of 532 deaf and hard-of-hearing infants enrolled in the HI HOPES early intervention programme in three provinces (2006-2011). RESULTS The median age of identification of children with bilateral hearing loss (n = 502) was 24.0 months (IQR = 12-36 months). Infants with aetiological risk factors were identified later than those without risk factors, and the latest age of identification (28.5 months) was for those with three aetiological risk factors (n = 42). The median age of amplification was 32 months with 102 children eligible for amplification at 31.1 months still unamplified. Early identification did not imply early amplification, and the more economically advantaged a Province the smaller the gap between ages of identification and amplification. CONCLUSIONS In a field with little population-level evidence, the size, and representativeness of this dataset makes a significant contribution to our understanding of infant hearing loss in South Africa.
Collapse
Affiliation(s)
- Claudine Störbeck
- Centre for Deaf Studies, University of the Witwatersrand, Johannesburg, South Africa
| | - Alys Young
- Social Research with Deaf People (SORD), School of Health Sciences, University of Manchester, Manchester, UK
| | - Selvarani Moodley
- Centre for Deaf Studies, University of the Witwatersrand, Johannesburg, South Africa
| | - Safiyyah Ismail
- Centre for Deaf Studies, University of the Witwatersrand, Johannesburg, South Africa
| |
Collapse
|
7
|
Moon PK, Qian ZJ, Stevenson DA, Chang KW. Single Versus Multigene Testing for Hereditary Hearing Loss: Use and Costs in a Commercially Insured Cohort. Otolaryngol Head Neck Surg 2023; 168:1472-1476. [PMID: 36939467 DOI: 10.1002/ohn.204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 10/20/2022] [Accepted: 10/31/2022] [Indexed: 01/23/2023]
Abstract
OBJECTIVE The objectives of this study were to describe trends in single-gene GJB2/6 (connexin 26/30) and multigene hearing loss panel (HLP) testing for hereditary hearing loss using real-world evidence. STUDY DESIGN Retrospective study using insurance claims data. SETTING Optum Data Mart database from 2015 to 2020. METHODS Rates of overall and hearing-specific genetic testing and costs to insurers and patients were reported. Linear regression models were used to assess the proportion of single-gene GJB2/6 testing over time. Additional linear regression models were used to assess changes in costs over time. RESULTS From 2015 to 2020, 91,986 children received genetic testing for any indication, of which 601 (0.65%) received hearing-specific tests. The proportion of single-gene GJB2/6 testing remained similar over time (mean difference [MD]: -1.3% per year; 95% confidence interval [CI]: -4.3%, 1.7%), while multigene HLP use increased over time (MD: 4.0% per year; 95% CI: 0.4%, 7.5%). The median charge for single-gene GJB2/6 testing remained constant during the study period (MD: -$34; 95% CI: -$86, $18), while the median charge for multigene HLP decreased during the study period (MD: -$145 per year; 95% CI: -$278, -$12). CONCLUSION Compared to molecular testing for GJB2/6, HLPs are becoming more common for hereditary hearing loss. The comprehensiveness of HLP and decreasing costs provide justification for its more widespread adoption moving forward.
Collapse
Affiliation(s)
- Peter K Moon
- Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - Z Jason Qian
- Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, California, USA
| | - David A Stevenson
- Department of Pediatrics-Medical Genetics, Stanford University School of Medicine, California, USA
| | - Kay W Chang
- Department of Otolaryngology-Head and Neck Surgery, Stanford University School of Medicine, Stanford, California, USA
| |
Collapse
|
8
|
Wu E, Ni J, Zhu Z, Xu H, Ci J, Tao L, Xie T. Association of sleep duration and noise exposure with hearing loss among Chinese and American adults: two cross-sectional studies. BMJ Open 2022; 12:e062535. [PMID: 36127089 PMCID: PMC9490609 DOI: 10.1136/bmjopen-2022-062535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
OBJECTIVES To examine the associations of sleep duration (SPD) and noise exposure with hearing loss (HL) among Chinese and American adults. DESIGN Two cross-sectional studies. SETTING The National Health and Nutrition Examination Survey (2011-2012), and Zhejiang Chinese participants between 1 January 2018 and 1 November 2021. PARTICIPANTS 3322 adults from the USA and 4452 adults from Zhejiang, China. MAIN OUTCOME MEASURES HL was defined as a pure-tone average >20 dB in the better ear at low frequency (500, 1000 and 2000 Hz), speech frequency (500, 1000, 2000 and 4000 Hz) or high frequency (3000, 4000, 6000 and 8000 Hz). Binary logistic regression analysis quantified the associations between SPD, noise exposure (at work or off-work) and HL. RESULTS SPD ≥8 hours/night had an OR of 0.71 (95% CI 0.59 to 0.84) for high-frequency HL vs. an SPD of 6-8 hours/night among the Chinese participants but had an OR of 1.28 (95% CI 1.03 to 1.58) among American participants. Noise exposure (both at work and off-work) was associated with poorer low-frequency (OR 1.58, 1.43; p<0.05), speech-frequency (OR 1.63, 1.29; p<0.05) and high-frequency (OR 1.37, 1.23; p<0.05) hearing among the Chinese participants; and it was associated with worse high-frequency hearing (OR 1.43, 1.66; p<0.05) among the American participants. The negative relationship between SPD ≥8 hours/night and HL was mainly observed in the Chinese participants with noise exposure (OR <1, p<0.05), and SPD ≥8 hours/night associated with poorer HF hearing was only identified in the American participants without noise exposure (OR >1, p<0.05). CONCLUSIONS Noise exposure was associated with poorer hearing. SPD ≥8 hours/night was negatively associated with HL in the Chinese participants especially when exposed to noise. SPD ≥8 hours/night was related to poorer high-frequency hearing in the American participants when they had no noise exposure.
Collapse
Affiliation(s)
- E Wu
- School of Pharmacy, Hangzhou Normal University, Hangzhou, Zhejiang, China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines; Engineering Laboratory of Development and Application of Traditional Chinese Medicines; Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Juntao Ni
- Women's Hospital School of Medicine Zhejiang University, Hangzhou, Zhejiang, China
| | - Zhaohui Zhu
- School of Pharmacy, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Hongquan Xu
- School of Pharmacy, Hangzhou Normal University, Hangzhou, Zhejiang, China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines; Engineering Laboratory of Development and Application of Traditional Chinese Medicines; Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Jun Ci
- Department of Otorhinolaryngology, Affiliated Hangzhou Chest Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China
| | - Lin Tao
- School of Pharmacy, Hangzhou Normal University, Hangzhou, Zhejiang, China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines; Engineering Laboratory of Development and Application of Traditional Chinese Medicines; Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, Zhejiang, China
| | - Tian Xie
- School of Pharmacy, Hangzhou Normal University, Hangzhou, Zhejiang, China
- Key Laboratory of Elemene Class Anti-Cancer Chinese Medicines; Engineering Laboratory of Development and Application of Traditional Chinese Medicines; Collaborative Innovation Center of Traditional Chinese Medicines of Zhejiang Province, Hangzhou Normal University, Hangzhou, Zhejiang, China
| |
Collapse
|
9
|
Abstract
Congenital sensorineural hearing loss is highly prevalent in our population, with a wide variety of causes. The key to clinical management is early detection and intervention, to promote language and cognitive development. With expanding genetic knowledge about congenital sensorineural hearing loss, the indiscriminate approach in workup is no longer recommended. Comprehensive genetic evaluation and cytomegalovirus testing are key to identify the underlying cause of the hearing loss. Treatment and prognosis depend on age of hearing loss onset and detection; management plans will typically include audiology consultation, speech therapy, and various hearing amplification devices and technologies when applicable.
Collapse
Affiliation(s)
- Samantha Shave
- Department of Otolaryngology-Head & Neck Surgery, Division of Pediatric Otolaryngology, Rutgers Robert Wood Johnson Medical School, 10 Plum Street, 8th Floor, New Brunswick, NJ 08901, USA
| | - Christina Botti
- Department of Pediatrics, Division of Medical Genetics, Rutgers Robert Wood Johnson Medical School, 10 Plum Street, 8th Floor, New Brunswick, NJ 08901, USA
| | - Kelvin Kwong
- Department of Otolaryngology-Head & Neck Surgery, Division of Pediatric Otolaryngology, Rutgers Robert Wood Johnson Medical School, 10 Plum Street, 8th Floor, New Brunswick, NJ 08901, USA.
| |
Collapse
|
10
|
Morell M, Rojas L, Haulena M, Busse B, Siebert U, Shadwick RE, Raverty SA. Selective Inner Hair Cell Loss in a Neonate Harbor Seal (Phoca vitulina). Animals (Basel) 2022; 12:ani12020180. [PMID: 35049802 PMCID: PMC8772928 DOI: 10.3390/ani12020180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/06/2022] [Accepted: 01/07/2022] [Indexed: 01/19/2023] Open
Abstract
Simple Summary Congenital hearing loss (i.e., hearing impairment present at birth) is recognized in humans and other terrestrial species, but there is a lack of information on congenital malformations and associated hearing loss in pinnipeds (seals, sea lions, and walruses). Baseline knowledge on marine mammal inner ear malformations is essential to differentiate between congenital and acquired abnormalities, which may be caused by infectious agents, age, or anthropogenic interactions, such as noise exposure. Analysis of the cochlea of a neonate harbor seal (Phoca vitulina) revealed bilateral loss of inner hair cells (sensory cells responsible for transducing the auditory signal) while the outer hair cells (sensory cells responsible for sound amplification and frequency selectivity and sensitivity) were intact. The selective inner hair cell loss (up to 84.6% of loss) was more severe in the basal turn, where the high frequencies are encoded. Potential causes and consequences are discussed. This is the first report of a case of selective inner hair cell loss in a marine mammal neonate, likely congenital. Abstract Congenital hearing loss is recognized in humans and other terrestrial species. However, there is a lack of information on its prevalence or pathophysiology in pinnipeds. It is important to have baseline knowledge on marine mammal malformations in the inner ear, to differentiate between congenital and acquired abnormalities, which may be caused by infectious pathogens, age, or anthropogenic interactions, such as noise exposure. Ultrastructural evaluation of the cochlea of a neonate harbor seal (Phoca vitulina) by scanning electron microscopy revealed bilateral loss of inner hair cells with intact outer hair cells. The selective inner hair cell loss was more severe in the basal turn, where high-frequency sounds are encoded. The loss of inner hair cells started around 40% away from the apex or tip of the spiral, reaching a maximum loss of 84.6% of hair cells at 80–85% of the length from the apex. Potential etiologies and consequences are discussed. This is believed to be the first case report of selective inner hair cell loss in a marine mammal neonate, likely congenital.
Collapse
Affiliation(s)
- Maria Morell
- Institute for Terrestrial and Aquatic Wildlife Research, University of Veterinary Medicine Hannover, Foundation, 25761 Büsum, Germany;
- Zoology Department, The University of British Columbia, Vancouver, BC V6T 1Z4, Canada;
- Correspondence:
| | - Laura Rojas
- Faculty of Veterinary Medicine and Zootechnics, National Autonomous University of Mexico, Av. Universidad 3000, Delegación Coyoacán, Mexico City 04510, Mexico;
| | - Martin Haulena
- Vancouver Aquarium Marine Science Center, Vancouver, BC V6G 3E2, Canada;
| | - Björn Busse
- Department of Osteology and Biomechanics, University Medical Center Hamburg-Eppendorf, 22529 Hamburg, Germany;
| | - Ursula Siebert
- Institute for Terrestrial and Aquatic Wildlife Research, University of Veterinary Medicine Hannover, Foundation, 25761 Büsum, Germany;
| | - Robert E. Shadwick
- Zoology Department, The University of British Columbia, Vancouver, BC V6T 1Z4, Canada;
| | - Stephen A. Raverty
- Zoology Department, The University of British Columbia, Vancouver, BC V6T 1Z4, Canada;
- Animal Health Center, Ministry of Agriculture, Abbotsford, BC V3G 2M3, Canada;
| |
Collapse
|
11
|
Kılıç S, Bouzaher MH, Cohen MS, Lieu JEC, Kenna M, Anne S. Comprehensive medical evaluation of pediatric bilateral sensorineural hearing loss. Laryngoscope Investig Otolaryngol 2021; 6:1196-1207. [PMID: 34667865 PMCID: PMC8513426 DOI: 10.1002/lio2.657] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Revised: 08/30/2021] [Accepted: 08/31/2021] [Indexed: 11/08/2022] Open
Abstract
Children with bilateral sensorineural hearing loss (SNHL) should undergo a comprehensive medical evaluation to determine the underlying etiology and help guide treatment and counseling. In this article, we review the indications and rationale for medical evaluation of pediatric bilateral SNHL, including history and physical examination, imaging, genetic testing, specialist referrals, cytomegalovirus (CMV) testing, and other laboratory tests. Workup begins with a history and physical examination, which can provide clues to the etiology of SNHL, particularly with syndromic causes. If SNHL is diagnosed within the first 3 weeks of life, CMV testing should be performed to identify patients that may benefit from antiviral treatment. If SNHL is diagnosed after 3 weeks, testing can be done using dried blood spots samples, if testing capability is available. Genetic testing is oftentimes successful in identifying causes of hearing loss as a result of recent technological advances in testing and an ever-increasing number of identified genes and genetic mutations. Therefore, where available, genetic testing should be performed, ideally with next generation sequencing techniques. Ophthalmological evaluation must be done on all children with SNHL. Imaging (high-resolution computed tomography and/or magnetic resonance imaging) should be performed to assess for anatomic causes of hearing loss and to determine candidacy for cochlear implantation when indicated. Laboratory testing is indicated for certain etiologies, but should not be ordered indiscriminately since the yield overall is low.
Collapse
Affiliation(s)
- Suat Kılıç
- Head and Neck InstituteCleveland ClinicClevelandOhioUSA
| | | | - Michael S. Cohen
- Department of Otolaryngology, Head and Neck SurgeryHarvard Medical SchoolBostonMassachusettsUSA
| | - Judith E. C. Lieu
- Department of Otolaryngology‐Head and Neck SurgeryWashington University in St. LouisSt. LouisMissouriUSA
| | - Margaret Kenna
- Department of Otolaryngology and Communication EnhancementBoston Children's HospitalBostonMassachusettsUSA
| | - Samantha Anne
- Head and Neck InstituteCleveland ClinicClevelandOhioUSA
| |
Collapse
|
12
|
Overview of Medical Evaluation of Unilateral and Bilateral Hearing Loss in Children. Otolaryngol Clin North Am 2021; 54:1155-1169. [PMID: 34535283 DOI: 10.1016/j.otc.2021.07.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Early identification, treatment, and medical evaluation of childhood hearing loss are essential to promoting language and social development, regardless of their age of presentation. Evaluation of hearing loss in children should prioritize reversible and treatable causes. Multiple algorithms have been established to address the changing prevalence of genetic or infectious contributions to hearing loss and include recommendations on laboratory testing, imaging, and genetic testing. Despite these recommendations, significant practice variation remains on assessing the etiology of hearing loss in children.
Collapse
|
13
|
Zhu QW, Li MT, Zhuang X, Chen K, Xu WQ, Jiang YH, Qin G. Assessment of Hearing Screening Combined With Limited and Expanded Genetic Screening for Newborns in Nantong, China. JAMA Netw Open 2021; 4:e2125544. [PMID: 34533568 PMCID: PMC8449278 DOI: 10.1001/jamanetworkopen.2021.25544] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
IMPORTANCE Early identification and intervention for newborns with hearing loss (HL) may lead to improved physiological and social-emotional outcomes. The current newborn hearing screening is generally beneficial but improvements can be made. OBJECTIVE To assess feasibility and evaluate utility of a modified genetic and hearing screening program for newborn infants. DESIGN, SETTING, AND PARTICIPANTS This population-based cohort study used a 4-stage genetic and hearing screening program at 6 local hospitals in Nantong city, China. Participants were newborn infants born between January 2016 and June 2020 from the Han population. Statistical analysis was performed from April 1 to May 1, 2021. EXPOSURES Limited genetic screening for 15 variants in 4 common HL-associated genes and newborn hearing screening (NHS) were offered concurrently to all newborns. Hearing rescreening and/or diagnostic tests were provided for infants with evidence of HL on NHS or genetic variants on screening. Expanded genetic tests for a broader range of genes were targeted to infants with HL with negative results of limited genetic tests. MAIN OUTCOMES AND MEASURES The detection capability for infants with hearing impairment who passed conventional hearing screening, as well as infants with normal hearing at risk of late-onset HL due to genetic susceptibility. RESULTS Among a total of 35 930 infants, 32 512 infants completed the follow-up and were included for analysis. Among the infants included in the analysis, all were from the Han population in China and 52.3% (16 988) were male. The modified genetic and hearing screening program revealed 142 cases of HL and 1299 cases of genetic variation. The limited genetic screening helped identify 31 infants who passed newborn hearing screening, reducing time for diagnosis and intervention; 425 infants with normal hearing with pathogenic SLC26A4 variation and 92 infants with MT-RNR1 variation were at risk for enlarged vestibular aqueduct and aminoglycoside-induced ototoxicity respectively, indicating early aversive or preventive management. CONCLUSIONS AND RELEVANCE This study found that performing modified genetic and hearing screening in newborns was feasible and provides evidence that the program could identify additional subgroups of infants who need early intervention. These findings suggest an advantage for universal adoption of such a practice.
Collapse
Affiliation(s)
- Qing-Wen Zhu
- Clinical Medicine Research Center, Nantong Maternal and Child Health Hospital affiliated to Nantong University, Nantong, China
| | - Mu-Ting Li
- Department of Epidemiology and Biostatistics, Nantong University School of Public Health, Nantong, China
| | - Xun Zhuang
- Department of Epidemiology and Biostatistics, Nantong University School of Public Health, Nantong, China
| | - Kai Chen
- Department of Internal Medicine, Nantong University Medical School, Nantong, China
| | - Wan-Qing Xu
- Department of Internal Medicine, Nantong University Medical School, Nantong, China
| | - Yin-Hua Jiang
- Clinical Medicine Research Center, Nantong Maternal and Child Health Hospital affiliated to Nantong University, Nantong, China
| | - Gang Qin
- Department of Epidemiology and Biostatistics, Nantong University School of Public Health, Nantong, China
| |
Collapse
|
14
|
Identification of Novel Compound Heterozygous MYO15A Mutations in Two Chinese Families with Autosomal Recessive Nonsyndromic Hearing Loss. Neural Plast 2021; 2021:9957712. [PMID: 34093702 PMCID: PMC8140830 DOI: 10.1155/2021/9957712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/14/2021] [Accepted: 05/04/2021] [Indexed: 11/17/2022] Open
Abstract
Congenital deafness is one of the most common causes of disability in humans, and more than half of cases are caused by genetic factors. Mutations of the MYO15A gene are the third most common cause of hereditary hearing loss. Using next-generation sequencing combined with auditory tests, two novel compound heterozygous variants c.2802_2812del/c.5681T>C and c.5681T>C/c.6340G>A in the MYO15A gene were identified in probands from two irrelevant Chinese families. Auditory phenotypes of the probands are consistent with the previously reported for recessive variants in the MYO15A gene. The two novel variants, c.2802_2812del and c.5681T>C, were identified as deleterious mutations by bioinformatics analysis. Our findings extend the MYO15A gene mutation spectrum and provide more information for rapid and precise molecular diagnosis of congenital deafness.
Collapse
|