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Wang S, Zhu Y, Xu C, Ding W, Jia H, Bian P, Xu B, Guo Y, Liu X. A novel intronic variant causing aberrant splicing identified in two deaf Chinese siblings with enlarged vestibular aqueducts. Mol Genet Genomic Med 2024; 12:e2361. [PMID: 38348997 PMCID: PMC10863356 DOI: 10.1002/mgg3.2361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 08/13/2023] [Accepted: 12/26/2023] [Indexed: 02/15/2024] Open
Abstract
OBJECTIVE We aimed to evaluate the genotype-phenotype relationship in two Chinese family members with enlarged vestibular aqueduct (EVA). METHODS We collected blood samples and clinical data from each pedigree family member. Genomic DNA was isolated from peripheral leukocytes using standard methods. Targeted next-generation sequencing and Sanger sequencing were performed to find the pathogenic mutation in this family. Minigene assays were used to verify whether the novel intronic mutation SLC26A4c.765+4A>G influenced mRNA splicing. RESULTS Hearing loss in the patients with EVA was diagnosed using auditory tests and imaging examinations. Two pathogenic mutations, c.765+4A>G and c.919-2A>G were detected in SLC26A4. In vitro minigene analysis confirmed that c.765+4A>G variant could cause aberrant splicing, resulting in skipping over exon 6. CONCLUSIONS The SLC26A4c.765+4A>G mutation is the causative variant in the Chinese family with EVA. Particular attention should be paid to intronic variants.
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Affiliation(s)
- Suyang Wang
- Department of Otolaryngology‐Head and Neck SurgeryLanzhou University Second HospitalLanzhouGansuPR China
- Department of Otolaryngology‐Head and Neck SurgeryMaternal and Child Health Hospital of Gansu ProvinceLanzhouGansuChina
| | - Yi‐Ming Zhu
- Department of Otolaryngology‐Head and Neck SurgeryGansu Provincial HospitalLanzhouGansuPR China
| | - ChenYang Xu
- Department of Otolaryngology‐Head and Neck SurgeryLanzhou University Second HospitalLanzhouGansuPR China
| | - Wenjuan Ding
- Department of Otolaryngology‐Head and Neck SurgeryLanzhou University Second HospitalLanzhouGansuPR China
| | - Hui Jia
- Department of Otolaryngology‐Head and Neck SurgeryLanzhou University Second HospitalLanzhouGansuPR China
| | - Panpan Bian
- Department of Otolaryngology‐Head and Neck SurgeryLanzhou University Second HospitalLanzhouGansuPR China
| | - Baicheng Xu
- Department of Otolaryngology‐Head and Neck SurgeryLanzhou University Second HospitalLanzhouGansuPR China
| | - Yufen Guo
- Department of Otolaryngology‐Head and Neck SurgeryLanzhou University Second HospitalLanzhouGansuPR China
- Health Commission of Gansu ProvinceLanzhouGansuPR China
| | - Xiaowen Liu
- Department of Otolaryngology‐Head and Neck SurgeryLanzhou University Second HospitalLanzhouGansuPR China
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Liu Y, Zhang Y, Wang J, Song S, Wang H, Meng Q, Zhan Y, Xu Y, Sun L. Multicolor melting curve analysis discloses high carrier frequency of hearing loss-associated variants among neonates in Jiangsu province. Mol Genet Genomic Med 2024; 12:e2384. [PMID: 38407562 PMCID: PMC10847707 DOI: 10.1002/mgg3.2384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 01/05/2024] [Accepted: 01/16/2024] [Indexed: 02/27/2024] Open
Abstract
BACKGROUND Genetic disorders ascribe to half of cases of congenital hearing loss. Hearing screening is significant in detecting hearing loss (HL) but weak at diagnosis, which can be complemented by genetic screening. METHODS To find a feasible method to accomplish genetic screening and evaluate its advantage when combined with hearing screening, between 1 January 2022, and 10 December 2023, we performed an observational cohort study based on 2488 neonates from the Han population at three hospitals in Jiangsu province. Genetic screening for 20 variants in four common HL-associated genes by multicolor melting curve analysis (MMCA) and hearing screening were offered concurrently to all participants. RESULTS In total, 170 (6.8%) of 2488 eligible neonates were detected at least one variant and among them, the proportion of referral was higher (p < 0.05). Genetic screening combined with hearing screening was associated with a 25.0% increase (2 of 8) in discovering cases of diagnosed hearing loss that were missed by hearing screening. CONCLUSION This study suggests that genetic screening combined with hearing screening by MMCA is effective at finding potential HL cases and practical to be validated in other places.
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Affiliation(s)
- Yi Liu
- Department of Obstetrics & GynecologyThe First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsuChina
| | - Yuanyuan Zhang
- Department of Obstetrics & GynecologyThe First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsuChina
| | - Jue Wang
- Department of Obstetrics & GynecologyThe First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsuChina
| | - Shengnan Song
- Department of Obstetrics & GynecologyThe First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsuChina
| | - Huiyan Wang
- Department of Obstetrics & GynecologyChangzhou Maternity and Child Health Care HospitalChangzhouJiangsuChina
| | - Qian Meng
- Department of Obstetrics & GynecologyLianyungang Maternity and Child Health HospitalLianyungangJiangsuChina
| | - Yuan Zhan
- Department of Obstetrics & GynecologyThe First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsuChina
| | - Yetao Xu
- Department of Obstetrics & GynecologyThe First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsuChina
| | - Lizhou Sun
- Department of Obstetrics & GynecologyThe First Affiliated Hospital of Nanjing Medical UniversityNanjingJiangsuChina
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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.
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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
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Li Y, Yang X, Wang C, Cheng X, Qi B, En H, Wen C, Yu Y, Deng L, Liu D, Fu X, Liu H, Huang L. Analysis of audiological outcomes of children referred from a universal newborn hearing screening program over 9 years in Beijing, China. Sci Rep 2023; 13:22630. [PMID: 38114581 PMCID: PMC10730824 DOI: 10.1038/s41598-023-50171-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 12/15/2023] [Indexed: 12/21/2023] Open
Abstract
Universal newborn hearing screening (UNHS) and audiological diagnosis are crucial for children with congenital hearing loss (HL). The objective of this study was to analyze hearing screening techniques, audiological outcomes and risk factors among children referred from a UNHS program in Beijing. A retrospective analysis was performed in children who were referred to our hospital after failing UNHS during a 9-year period. A series of audiological diagnostic tests were administered to each case, to confirm and determine the type and degree of HL. Risk factors for HL were collected. Of 1839 cases, 53.0% were referred after only transient evoked otoacoustic emission (TEOAE) testing, 46.1% were screened by a combination of TEOAE and automatic auditory brainstem response (AABR) testing, and 1.0% were referred after only AABR testing. HL was confirmed in 55.7% of cases. Ears with screening results that led to referral experienced a more severe degree of HL than those with results that passed. Risk factors for HL were identified in 113 (6.1%) cases. The main risk factors included craniofacial anomalies (2.7%), length of stay in the neonatal intensive care unit longer than 5 days (2.4%) and birth weight less than 1500 g (0.8%). The statistical data showed that age (P < 0.001) and risk factors, including craniofacial anomalies (P < 0.001) and low birth weight (P = 0.048), were associated with the presence of HL. This study suggested that hearing screening plays an important role in the early detection of HL and that children with risk factors should be closely monitored.
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Affiliation(s)
- Yue Li
- Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- Beijing Institute of Otolaryngology, Beijing, China
- Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Beijing, China
| | - Xiaozhe Yang
- Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- Beijing Institute of Otolaryngology, Beijing, China
- Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Beijing, China
| | - Chuan Wang
- Maternal and Child Health Hospital of Chao Yang District, Beijing, China
| | - Xiaohua Cheng
- Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- Beijing Institute of Otolaryngology, Beijing, China
- Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Beijing, China
| | - Beier Qi
- Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- Beijing Institute of Otolaryngology, Beijing, China
- Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Beijing, China
| | - Hui En
- Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- Beijing Institute of Otolaryngology, Beijing, China
- Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Beijing, China
| | - Cheng Wen
- Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- Beijing Institute of Otolaryngology, Beijing, China
- Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Beijing, China
| | - Yiding Yu
- Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- Beijing Institute of Otolaryngology, Beijing, China
- Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Beijing, China
| | - Lin Deng
- Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- Beijing Institute of Otolaryngology, Beijing, China
- Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Beijing, China
| | - Dongxin Liu
- Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- Beijing Institute of Otolaryngology, Beijing, China
- Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Beijing, China
| | - Xinxing Fu
- Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- Beijing Institute of Otolaryngology, Beijing, China
- Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Beijing, China
- Ear Science Institute Australia, Subiaco, WA, Australia
| | - Hui Liu
- Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China
- Beijing Institute of Otolaryngology, Beijing, China
- Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Beijing, China
| | - Lihui Huang
- Department of Otolaryngology-Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing, China.
- Beijing Institute of Otolaryngology, Beijing, China.
- Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry of Education, Beijing, China.
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Rajalakshmi K, Thirunavukkarasu J, Vikraman MA, Maruthy S, Sylvester C, Kundapur R. Analysis of SLC26A4 Gene in Individuals with Non Syndromic Hearing Impairment in Relation with GJB2 Associated Mutations. Avicenna J Med Biotechnol 2023; 15:124-127. [PMID: 37034890 PMCID: PMC10073921] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 01/07/2023] [Indexed: 04/11/2023] Open
Abstract
Background Hearing Loss (HL) is the most common sensory disorder. HL commonly ranges from mild to severe. Persons with HL face difficulty in hearing conversations or sounds through one ear or both ears, which impacts one's ability to interact with others. Hence it is a communicable disorder that makes people socially isolated, lonely, and frustrated. HL in children severely affects language development. The people who are referred to as 'Deaf' with very little or no hearing capabilities, are considered as having profound hearing loss. More than 124 genes are causative for Non-Syndromic HL (NSHL) with varying inheritance, among which the SLC26A4 mutations are the second commonest cause of hereditary HL across the globe. Methods Samples from 70 NSHL patients were analyzed through Next-Generation Sequencing (NGS) and generated five pathogenic variants [N246fs (rs918684449), K564fs (rs746427774), F122fs, V239D (rs111033256), T721M (rs121908363)] each with frequency of 1.42%. Three missense variants [S399P (rs747431002), L597S (rs55638457), and G6V (rs111033423)] were reported under the "uncertain" category. All the collected samples were further genotyped to look for the possibility of having GJB2 and HL-associated mutations. Results Out of five SLC26A4 pathogenic mutations N246fs (rs918684449) and K564fs (rs746427774) were observed in samples which were positive for GJB2-HL associated candidate mutations [W24X (rs104894396), Q124X (rs397516874) and W77X (rs80338944)]. Similarly, pathogenic variants F122fs, V239D (rs111033256) and T721M (rs121908363) were observed in patient samples which were negative for GJB2-HL associated mutations. Conclusion Our data will expand the list of variants underlying NSHL and encourage further genotype SLC26A4 gene concerning the south Indian population with a large sample size.
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Affiliation(s)
- Krishna Rajalakshmi
- Department of Audiology, All India Institute of Speech and Hearing, Naimisham Campus, Manasagangothri, Mysore, India 570006
- School of Rehabilitation and Behavioral Sciences, VMRF (DU) Aarupadai Veedu Medical College Pondicherry, India 607403
| | - Jayakumar Thirunavukkarasu
- Department of Speech-Language Sciences, All India Institute of Speech and Hearing, Naimisham Campus, Manasagangothri, Mysore, India 570006
| | - Meenu Ambika Vikraman
- Department of Audiology, All India Institute of Speech and Hearing, Naimisham Campus, Manasagangothri, Mysore, India 570006
- Department of Audiology Taluk Head Quarters Hospital, Kottarakara, Kerala, India 691506
| | - Santosh Maruthy
- Department of Speech-Language Sciences, All India Institute of Speech and Hearing, Naimisham Campus, Manasagangothri, Mysore, India 570006
| | - Charles Sylvester
- Unit for Human Genetics, All India Institute of Speech and Hearing, Naimisham Campus, Manasagangothri, Mysore, India 570006
| | - Rajesh Kundapur
- Unit for Human Genetics, All India Institute of Speech and Hearing, Naimisham Campus, Manasagangothri, Mysore, India 570006
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Zhang J, Guan J, Wang Q. [Genetics of pediatric hearing loss]. LIN CHUANG ER BI YAN HOU TOU JING WAI KE ZA ZHI = JOURNAL OF CLINICAL OTORHINOLARYNGOLOGY, HEAD, AND NECK SURGERY 2023; 37:181-185. [PMID: 36843515 PMCID: PMC10320671 DOI: 10.13201/j.issn.2096-7993.2023.03.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Indexed: 02/28/2023]
Abstract
With the rapid development of sequencing technology and bioinformatics, the genetic research and related clinical practice of pediatric hearing loss have also made significant progress. This review summarized and analyzed the genetic causes of hearing impairment in children and the research progress of related genetic diagnosis and screening, in order to provide reference for the prevention and treatment of pediatric hearing loss and related research.
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Affiliation(s)
- Jiao Zhang
- Department of Audiology and Vestibular Medicine,Institute of Otolaryngology,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
| | - Jing Guan
- Department of Otolaryngology Head and Neck Surgery,the First Medical Center of Chinese PLA General Hospital
| | - Qiuju Wang
- Department of Audiology and Vestibular Medicine,Institute of Otolaryngology,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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王 秋. [The critical thoughts on diagnosis and treatment of childhood hearing loss]. LIN CHUANG ER BI YAN HOU TOU JING WAI KE ZA ZHI = JOURNAL OF CLINICAL OTORHINOLARYNGOLOGY, HEAD, AND NECK SURGERY 2023; 37:161-168. [PMID: 36843511 PMCID: PMC10320674 DOI: 10.13201/j.issn.2096-7993.2023.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 12/24/2022] [Indexed: 02/28/2023]
Abstract
With the rapid development of genomics, imaging detection, audiology technology, and gene therapy, the clinical practice of childhood hearing loss has also made significant progress. This paper summarized and analyzed the important concepts, epidemiology, hearing screening, hearing diagnosis, genetic evaluation, imaging detection and intervention strategies of pediatric hearing loss, especially the current situation and new progress, to facilitate the clinical practice of diagnosis and treatment of childhood hearing loss.
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Affiliation(s)
- 秋菊 王
- 解放军总医院第六医学中心耳鼻咽喉头颈外科医学部耳鼻咽喉内科 耳鼻咽喉研究所 国家耳鼻咽喉疾病临床医学研究中心(北京,100048)Department of Audiology and Vestibular Medicine, Institute of Otolaryngology, 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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The Frequency of Common Deafness-Associated Variants Among 3,555,336 Newborns in China and 141,456 Individuals Across Seven Populations Worldwide. Ear Hear 2023; 44:232-241. [PMID: 36149380 DOI: 10.1097/aud.0000000000001274] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
OBJECTIVES Genetic screening can benefit early detection and intervention for hearing loss. The frequency of common deafness-associated variants in general populations is highly important for genetic screening and genetic counseling tailored to different ethnic backgrounds. We aimed to analyze the frequency of common deafness-associated variants in a large population-based Chinese newborn cohort and to explore the population-specific features in diverse populations worldwide. DESIGN This population-based cohort study analyzed the frequency of common deafness-associated variants in 3,555,336 newborns in the Chinese Newborn Concurrent Hearing and Genetic Screening cohort. Participants were newborn infants born between January 2007 and September 2020. Limited genetic screening for 20 variants in 4 common deafness-associated genes and newborn hearing screening were offered concurrently to all newborns in the Chinese Newborn Concurrent Hearing and Genetic Screening cohort. Sequence information of 141,456 individuals was also analyzed from seven ethnic populations from the Genome Aggregation Database for 20 common deafness-related variants. Statistical analysis was performed using R. RESULTS A total of 3,555,326 Chinese neonates completed the Newborn Concurrent Hearing and Genetic Screening were included for analysis. We reported the distinct landscape of common deafness-associated variants in this large population-based cohort. We found that the carrier frequencies of GJB2 , SLC26A4 , GJB3 , and MT-RNR were 2.53%, 2.05%, 0.37%, and 0.25%, respectively. Furthermore, GJB2 c.235delC was the most common variant with an allele frequency of 0.99% in the Chinese newborn population. We also demonstrated nine East-Asia-enriched variants, one Ashkenazi Jewish-enriched variant, and one European/American-enriched variant for hearing loss. CONCLUSIONS We showed the distinct landscape of common deafness-associated variants in the Chinese newborn population and provided insights into population-specific features in diverse populations. These data can serve as a powerful resource for otolaryngologists and clinical geneticists to inform population-adjusted genetic screening programs for hearing loss.
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Li MM, Tayoun AA, DiStefano M, Pandya A, Rehm HL, Robin NH, Schaefer AM, Yoshinaga-Itano C. Clinical evaluation and etiologic diagnosis of hearing loss: A clinical practice resource of the American College of Medical Genetics and Genomics (ACMG). Genet Med 2022; 24:1392-1406. [PMID: 35802133 DOI: 10.1016/j.gim.2022.03.018] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 03/28/2022] [Indexed: 11/26/2022] Open
Abstract
Hearing loss is a common and complex condition that can occur at any age, can be inherited or acquired, and is associated with a remarkably wide array of etiologies. The diverse causes of hearing loss, combined with the highly variable and often overlapping presentations of different forms of hearing loss, challenge the ability of traditional clinical evaluations to arrive at an etiologic diagnosis for many deaf and hard-of-hearing individuals. However, identifying the etiology of hearing loss may affect clinical management, improve prognostic accuracy, and refine genetic counseling and assessment of the likelihood of recurrence for relatives of deaf and hard-of-hearing individuals. Linguistic and cultural identities associated with being deaf or hard-of-hearing can complicate access to and the effectiveness of clinical care. These concerns can be minimized when genetic and other health care services are provided in a linguistically and culturally sensitive manner. This clinical practice resource offers information about the frequency, causes, and presentations of hearing loss and suggests approaches to the clinical and genetic evaluation of deaf and hard-of-hearing individuals aimed at identifying an etiologic diagnosis and providing informative and effective patient education and genetic counseling.
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Affiliation(s)
- Marilyn M Li
- Department of Pathology and Laboratory Medicine, Department of Pediatrics, Children's Hospital of Philadelphia, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
| | - Ahmad Abou Tayoun
- Al Jalila Genomics Center, Al Jalila Children's Specialty Hospital, Mohammed Bin Rashid University, Dubai, United Arab Emirates
| | | | - Arti Pandya
- Department of Pediatrics, University of North Carolina School of Medicine, Chapel Hill, NC
| | - Heidi L Rehm
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA
| | - Nathaniel H Robin
- Departments of Genetics and Pediatrics, University of Alabama at Birmingham, Birmingham, AL
| | - Amanda M Schaefer
- Department of Otolaryngology-Head & Neck Surgery, Molecular Otolaryngology and Renal Research Laboratories, University of Iowa, Iowa City, IA
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Zhu Y, Hu L, Yang L, Wang L, Lu Y, Dong X, Xiao T, Xu Z, Wu B, Zhou W. Association Between Expanded Genomic Sequencing Combined With Hearing Screening and Detection of Hearing Loss Among Newborns in a Neonatal Intensive Care Unit. JAMA Netw Open 2022; 5:e2220986. [PMID: 35816303 PMCID: PMC9274323 DOI: 10.1001/jamanetworkopen.2022.20986] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
IMPORTANCE Hearing loss is a global social burden. Early identification of hearing loss missed by newborn hearing screening tests in the neonatal intensive care unit is crucial. OBJECTIVE To assess the association between expanded genomic sequencing combined with hearing screening and detection of hearing loss as well as improvement in the neonatal intensive care unit. DESIGN, SETTING, AND PARTICIPANTS This cohort study was performed between August 8, 2016, and December 31, 2020, among 8078 newborns admitted to the neonatal intensive care unit of the Children's Hospital of Fudan University in Shanghai, China. Follow-up for hearing status was performed via telephone interviews between September 1 and November 30, 2021. EXPOSURES A hearing screening test and the expanded genomic sequencing targeting 2742 genes were administered to each patient. Those who failed the hearing screening test or had positive genetic findings were referred for diagnostic audiometry at a median of 3 months of age. MAIN OUTCOMES AND MEASURES The primary outcome was hearing loss missed by hearing screening test. Secondary outcomes were genetic findings and benefits associated with the expanded genomic sequencing for clinical management of patients in the neonatal intensive care unit. RESULTS Of 8078 patients (4666 boys [57.8%]; median age, 6.3 days [IQR, 3.0-12.0 days]), 52 of 240 (21.7%) received a diagnosis of hearing loss. Expanded genomic sequencing combined with hearing screening was associated with a 15.6% increase (7 of 45 patients) in cases of diagnosed hearing loss that were missed by hearing screening. Of the 52 patients with hearing loss, genetic factors were identified for 39 patients (75.0%); GJB2 and SLC26A4 were the most common genes identified. Patients with genetic findings experienced a more severe degree of hearing loss than those without genetic findings (21 profound, 4 severe, 7 moderate, and 7 mild vs 2 severe, 4 moderate, and 7 mild; P = .005), with more bilateral hearing loss (39 of 39 [100%] vs 9 of 13 [69.2%]; P = .003). Clinical management strategies were changed for patients who underwent genomic sequencing combined with hearing screening. CONCLUSIONS AND RELEVANCE This study suggests that expanded genomic sequencing combined with hearing screening may be effective at detecting hearing loss among patients in the neonatal intensive care unit.
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Affiliation(s)
- Yunqian Zhu
- Department of Neonatology, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Liyuan Hu
- Department of Neonatology, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Lin Yang
- Department of Pediatric Endocrinology and Inherited Metabolic Diseases, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Laishuan Wang
- Department of Neonatology, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Yulan Lu
- Center for Molecular Medicine, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Xinran Dong
- Center for Molecular Medicine, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Tiantian Xiao
- Department of Neonatology, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Zhengmin Xu
- Department of Otolaryngology–Head and Neck Surgery, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Bingbing Wu
- Center for Molecular Medicine, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
- Key Laboratory of Birth Defects, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
- Key Laboratory of Neonatal Diseases, Ministry of Health, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
| | - Wenhao Zhou
- Department of Neonatology, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
- Key Laboratory of Birth Defects, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
- Key Laboratory of Neonatal Diseases, Ministry of Health, Children’s Hospital of Fudan University, National Children’s Medical Center, Shanghai, China
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Luo H, Yang Y, Wang X, Xu F, Huang C, Liu D, Zhang L, Huang T, Ma P, Lu Q, Huang S, Yang B, Zou Y, Liu Y. Concurrent newborn hearing and genetic screening of common hearing loss variants with bloodspot-based targeted next generation sequencing in Jiangxi province. Front Pediatr 2022; 10:1020519. [PMID: 36389375 PMCID: PMC9659731 DOI: 10.3389/fped.2022.1020519] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 10/06/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND AND AIMS Concurrent hearing and genetic screening of newborns have been widely adopted as an effective strategy in early diagnosis and intervention for hearing loss in many cities in China. Here, we aimed to firstly explore the efficacy of combining conventional hearing screening with genetic screening among the large-scale newborns in Jiangxi Province. METHODS A total of 24,349 newborns from Jiangxi Maternal and Child Health Hospital were enrolled in our study from April 2021 to June 2022. Newborn hearing screening was conducted using otoacoustic emission (OAE) and automated auditory brainstem response (AABR). Meanwhile, newborn dried blood spots were collected and twenty common variants in four genes, including GJB2, SLC26A4, MT-RNR1(12SrRNA), and GJB3, were screened using a BGISEQ-500 next generation sequencing platform. Whole coding regions sequencing of GJB2 and SLC26A4 were performed by Sanger sequencing and NGS, respectively. Following up of hearing for the newborns was undertaken by phone interviews. RESULTS Among the 24,349 newborns, 7.00% (1,704/24,349) were bilaterally or unilaterally referred in their initial hearing screening, whereas 1.30% (316/24,349) exhibited bilateral or unilateral hearing loss in the repeated screening. Genetic screening revealed that 4.813% (1,172/24,349) of the screened newborns were positive for at least one mutant allele (heterozygote, homozygote, or compound heterozygote in one gene, mtDNA homoplasmy or heteroplasmy and combined variants in different genes). A total of 1,146 individuals were identified with mutant allele in one gene, including 525 of GJB2, 371 of SLC26A4, 189 as homoplasmic or heteroplasmic of MT-RNR1, and 61 of GJB3, indicating that GJB2 and SLC26A4 are the most common endemic deafness-associated genes among newborns in Jiangxi Province. Nineteen newborns were detected with combined heterozygous variants in different genes, with "c.235delC heterozygous and c.919-2A > G heterozygous" as the most prevalent genotype. Additionally, seven newborns were screened as homozygotes or compound heterozygotes responsible for congenital or late-onset prelingual hearing loss, including three cases with GJB2 c.235delC homozygous and one with SLC26A4 c.919-2A > G homozygous variant, one case with compound heterozygous variants for GJB2 and two with compound heterozygous variants for SLC26A4. Coding regions sequencing of GJB2 or SLC26A4 for overall 265 infants revealed that 14 individuals were identified as compound heterozygote with a second pathogenic variant not screened by our genetic panel. CONCLUSIONS Herein our study firstly investigated the efficacy of concurrent hearing screening and genetic screening of common hearing impairment variants among large-scale newborns in Jiangxi Province. Concurrent screening provides a more comprehensive approach for management of congenital or delayed onset prelingual hearing loss and prevention of drug-induced hearing impairment for newborns at risk as well as their maternal relatives. An insight into the molecular epidemiology for hearing loss genes among Jiangxi population will also be beneficial to the genetic counseling and birth defect prevention.
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Affiliation(s)
- Haiyan Luo
- Department of Medical Genetics, Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, Nanchang, China
| | - Yan Yang
- Department of Medical Genetics, Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, Nanchang, China
| | - Xinrong Wang
- Department of Medical Genetics, Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, Nanchang, China
| | - Fangping Xu
- Department of Obstetrics, Jiangxi Provincial Maternal and Child Health Hospital, Nanchang, China
| | - Cheng Huang
- Department of Medical Genetics, Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, Nanchang, China
| | - Danping Liu
- Department of Medical Genetics, Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, Nanchang, China
| | - Liuyang Zhang
- Department of Medical Genetics, Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, Nanchang, China
| | - Ting Huang
- Department of Medical Genetics, Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, Nanchang, China
| | - Pengpeng Ma
- Department of Medical Genetics, Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, Nanchang, China
| | - Qing Lu
- Department of Medical Genetics, Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, Nanchang, China
| | - Shuhui Huang
- Department of Medical Genetics, Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, Nanchang, China
| | - Bicheng Yang
- Department of Medical Genetics, Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, Nanchang, China
| | - Yongyi Zou
- Department of Medical Genetics, Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, Nanchang, China
| | - Yanqiu Liu
- Department of Medical Genetics, Jiangxi Key Laboratory of Birth Defect Prevention and Control, Jiangxi Maternal and Child Health Hospital, Nanchang, China
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