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Sharma N, Kumari D, Panigrahi I, Khetarpal P. A systematic review of the monogenic causes of Non-Syndromic Hearing Loss (NSHL) and discussion of Current Diagnosis and Treatment options. Clin Genet 2023; 103:16-34. [PMID: 36089522 DOI: 10.1111/cge.14228] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 09/02/2022] [Accepted: 09/06/2022] [Indexed: 12/13/2022]
Abstract
Hearing impairment is one of the most widespread inheritable sensory disorder affecting at least 1 in every 1000 born. About two-third of hereditary hearing loss (HHL) disorders are non-syndromic. To provide comprehensive update of monogenic causes of non-syndromic hearing loss (NSHL), literature search has been carried out with appropriate keywords in the following databases-PubMed, Google Scholar, Cochrane library, and Science Direct. Out of 2214 papers, 271 papers were shortlisted after applying inclusion and exclusion criterion. Data extracted from selected papers include information about gene name, identified pathogenic variants, ethnicity of the patient, age of onset, gender, title, authors' name, and year of publication. Overall, pathogenic variants in 98 different genes have been associated with NSHL. These genes have important role to play during early embryonic development in ear structure formation and hearing development. Here, we also review briefly the recent information about diagnosis and treatment approaches. Understanding pathogenic genetic variants are helpful in the management of affected and may offer targeted therapies in future.
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Affiliation(s)
- Nandita Sharma
- Department of Human Genetics and Molecular Medicine, School of Health Sciences, Central University of Punjab, Bathinda, India
| | - Divya Kumari
- Department of Pediatrics Medicine, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Inusha Panigrahi
- Department of Pediatrics Medicine, Post Graduate Institute of Medical Education and Research, Chandigarh, India
| | - Preeti Khetarpal
- Department of Human Genetics and Molecular Medicine, School of Health Sciences, Central University of Punjab, Bathinda, India
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Maeda Y, Sasaki A, Kasai S, Goto S, Nishio SY, Sawada K, Tokuda I, Itoh K, Usami SI, Matsubara A. Prevalence of the mitochondrial 1555 A>G and 1494 C>T mutations in a community-dwelling population in Japan. Hum Genome Var 2020; 7:27. [PMID: 33014404 PMCID: PMC7501278 DOI: 10.1038/s41439-020-00115-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 08/07/2020] [Accepted: 08/13/2020] [Indexed: 02/04/2023] Open
Abstract
Single nucleotide polymorphisms in mitochondrial DNA, such as mitochondrial 1555 A>G (m.1555 A>G) and mitochondrial 1494 C>T (m.1494 C>T), are known to be causative mutations of nonsyndromic hearing loss following exposure to aminoglycoside antibiotics. The prevalence of the m.1555 A>G and m.1494 C>T mutations has not been reported for the general population in Japan. The purpose of this study was to investigate the prevalence of m.1555 A>G and m.1494 C>T mutations in a community-dwelling population in Japan in order to prevent aminoglycoside-induced hearing loss. We recruited participants older than 20 years of age to the Iwaki Health Promotion Project in 2014, 2015, and 2016, resulting in the recruitment of 1,683 participants. For each participant, we performed a hearing test and a genetic test for the m.1555 A>G and m.1494 C>T mutations using the TaqMan genotyping method. The m.1555 A>G mutation was detected in only 1 of the 1,683 participants (0.06%). This carrier of the m.1555 A>G mutation was a 69-year-old male with bilateral, symmetric, and high-frequency hearing loss. We provided genetic counseling and distributed a drug card advising him to avoid the administration of aminoglycoside antibiotics. In contrast, the m.1494 C>T mutation was not detected in this study population.
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Affiliation(s)
- Yasunori Maeda
- Department of Otorhinolaryngology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Akira Sasaki
- Department of Otorhinolaryngology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Shuya Kasai
- Department of Stress Response Science, Center for Advanced Medical Research, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Shinichi Goto
- Department of Otorhinolaryngology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Shin-ya Nishio
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
- Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto, Japan
| | - Kaori Sawada
- Department of Social Medicine, Hirosaki University School of Medicine, Hirosaki, Japan
| | - Itoyo Tokuda
- Department of Social Medicine, Hirosaki University School of Medicine, Hirosaki, Japan
| | - Ken Itoh
- Department of Stress Response Science, Center for Advanced Medical Research, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Shin-ichi Usami
- Department of Otorhinolaryngology, Shinshu University School of Medicine, Matsumoto, Japan
- Department of Hearing Implant Sciences, Shinshu University School of Medicine, Matsumoto, Japan
| | - Atsushi Matsubara
- Department of Otorhinolaryngology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
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Zhang M, Han Y, Zhang F, Bai X, Wang H. Mutation spectrum and hotspots of the common deafness genes in 314 patients with nonsyndromic hearing loss in Heze area, China. Acta Otolaryngol 2019; 139:612-617. [PMID: 31107121 DOI: 10.1080/00016489.2019.1609699] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Background: Although, half of the childhood deafness is genetically related, the molecular etiology of hearing impairment has not been demonstrated explicitly. In addition, the mutation spectrums of deafness genes vary among different areas and ethnics. Objectives: To know more about the mutation spectrums of deafness genes in China, we tested the mutations of three common deafness genes (GJB2, SLC26A4, and mtDNA12SrRNA) in a particular deafness population from Heze area. Materials and methods: SNPscan technology was utilized to perform mutation screening for these three common deafness genes in 314 nonsyndromic deaf patients from Heze area. Results: 38.21% (120/314) of these 314 patients with nonsyndromic hearing loss from Heze area were related to the genetic defects in these three deafness genes, including 20.06% (63/314) for GJB2, 15.29% (48/314) for SLC26A4, and 2.87% (9/314) for mtDNA12SrRNA. Furthermore, the mutation hotspots in three deaf genes were GJB2 235delC, SLC26A4 c.919-2A > G, and mtDNA12SrRNA 1555A > G, respectively, distinct from hotspots reported in other regions worldwide. Conclusion: Our results disclosed a special and unique mutation spectrum of these three common deaf genes in Heze deaf population.
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Affiliation(s)
- Meng Zhang
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Shandong Provincial ENT Hospital Affiliated to Shandong University, Jinan, P.R. China
- Key Laboratory of Otorhinolaryngology, National Health Commission (Shandong University), Jinan, P.R. China
- Shandong Provincial Key Laboratory of Otology, Jinan, P.R. China
- Shandong Institute of Otolaryngology, Jinan, P.R. China
| | - Yuechen Han
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Shandong Provincial ENT Hospital Affiliated to Shandong University, Jinan, P.R. China
- Key Laboratory of Otorhinolaryngology, National Health Commission (Shandong University), Jinan, P.R. China
- Shandong Provincial Key Laboratory of Otology, Jinan, P.R. China
- Shandong Institute of Otolaryngology, Jinan, P.R. China
| | - Fengguo Zhang
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Shandong Provincial ENT Hospital Affiliated to Shandong University, Jinan, P.R. China
- Key Laboratory of Otorhinolaryngology, National Health Commission (Shandong University), Jinan, P.R. China
- Shandong Provincial Key Laboratory of Otology, Jinan, P.R. China
- Shandong Institute of Otolaryngology, Jinan, P.R. China
| | - Xiaohui Bai
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Shandong Provincial ENT Hospital Affiliated to Shandong University, Jinan, P.R. China
- Key Laboratory of Otorhinolaryngology, National Health Commission (Shandong University), Jinan, P.R. China
- Shandong Provincial Key Laboratory of Otology, Jinan, P.R. China
- Shandong Institute of Otolaryngology, Jinan, P.R. China
| | - Haibo Wang
- Department of Otolaryngology-Head and Neck Surgery, Shandong Provincial ENT Hospital, Shandong Provincial ENT Hospital Affiliated to Shandong University, Jinan, P.R. China
- Key Laboratory of Otorhinolaryngology, National Health Commission (Shandong University), Jinan, P.R. China
- Shandong Provincial Key Laboratory of Otology, Jinan, P.R. China
- Shandong Institute of Otolaryngology, Jinan, P.R. China
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Han JJ, Nguyen PD, Oh DY, Han JH, Kim AR, Kim MY, Park HR, Tran LH, Dung NH, Koo JW, Lee JH, Oh SH, Anh Vu H, Choi BY. Elucidation of the unique mutation spectrum of severe hearing loss in a Vietnamese pediatric population. Sci Rep 2019; 9:1604. [PMID: 30733538 PMCID: PMC6367484 DOI: 10.1038/s41598-018-38245-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 12/17/2018] [Indexed: 11/09/2022] Open
Abstract
The mutational spectrum of deafness in Indochina Peninsula, including Vietnam, remains mostly undetermined. This significantly hampers the progress toward establishing an effective genetic screening method and early customized rehabilitation modalities for hearing loss. In this study, we evaluated the genetic profile of severe-to-profound hearing loss in a Vietnamese pediatric population using a hierarchical genetic analysis protocol that screened 11 known deafness-causing variants, followed by massively parallel sequencing targeting 129 deafness-associated genes. Eighty-seven children with isolated severe-to-profound non-syndromic hearing loss without family history were included. The overall molecular diagnostic yield was estimated to be 31.7%. The mutational spectrum for severe-to-profound non-syndromic hearing loss in our Vietnamese population was unique: The most prevalent variants resided in the MYO15A gene (7.2%), followed by GJB2 (6.9%), MYO7A (5.5%), SLC26A4 (4.6%), TMC1 (1.8%), ESPN (1.8%), POU3F4 (1.8%), MYH14 (1.8%), EYA1 (1.8%), and MR-RNR1 (1.1%). The unique spectrum of causative genes in the Vietnamese deaf population was similar to that in the southern Chinese deaf population. It is our hope that the mutation spectrum provided here could aid in establishing an efficient protocol for genetic analysis of severe-to-profound hearing loss and a customized screening kit for the Vietnamese population.
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Affiliation(s)
- Jae Joon Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Pham Dinh Nguyen
- Department of Otorhinolaryngology, Children's Hospital 1, Ho Chi Minh City, Vietnam
| | - Doo-Yi Oh
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Jin Hee Han
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Ah-Reum Kim
- Biomedical Research Institute, Seoul National University Hospital, Seoul, Korea
| | - Min Young Kim
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Hye-Rim Park
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Lam Huyen Tran
- Department of Otorhinolaryngology, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Nguyen Huu Dung
- Department of Otorhinolaryngology, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam
| | - Ja-Won Koo
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Jun Ho Lee
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul, Korea
| | - Seung Ha Oh
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Hospital, Seoul, Korea
| | - Hoang Anh Vu
- Center for Molecular Biomedicine, University of Medicine and Pharmacy at Ho Chi Minh City, Ho Chi Minh City, Vietnam.
| | - Byung Yoon Choi
- Department of Otorhinolaryngology-Head and Neck Surgery, Seoul National University Bundang Hospital, Seongnam, Korea.
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Zhou Y, Li C, Li M, Zhao Z, Tian S, Xia H, Liu P, Han Y, Ren R, Chen J, Jia C, Guo W. Mutation analysis of common deafness genes among 1,201 patients with non-syndromic hearing loss in Shanxi Province. Mol Genet Genomic Med 2019; 7:e537. [PMID: 30693673 PMCID: PMC6418354 DOI: 10.1002/mgg3.537] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 08/12/2018] [Accepted: 11/16/2018] [Indexed: 12/24/2022] Open
Abstract
Background Hearing impairment is one of most frequent birth defects, which affects nearly 1 in every 1,000 live births. However, the molecular etiology of non‐syndromic deafness in China is not well studied. Here, we have investigated the presence of mutations in three genes commonly mutated in non‐syndromic deafness patients in Shanxi Province, which has the highest frequency of birth defects in China. Methods In total, 1,201 unrelated non‐syndromic deafness patients and 300 healthy individuals were enrolled. The hearing ability was confirmed by audiologic evaluation. Three major deafness‐related genes (GJB2, SLC26A4 (PDS), and mtDNA 12S rRNA) of all individuals enrolled were analyzed by Sanger sequencing. Results The results showed that GJB2 mutations accounted for 21.23% (255/1,201) in the patient group, with c.235delC, a hotspot mutation, accounting for 10.99% (132/1,201). Moreover, 11 new GJB2 mutations were identified. SLC26A4 mutations accounted for 9.33% (112/1,201) in the patient group, with IVS7‐2A>G as the most prevalent mutation accounting for 4.75% (57/1,201). In addition, 15 patients (1.25%) were found to carry mtDNA 12S rRNA c.1555A>G mutation, while only two cases had the mtDNA 12S rRNA c.1494C>T. Conclusion In our research, it was found that c.235delC in GJB2 and c.919‐2A>G (IVS7‐2A>G) in SLC26A4 were the highest frequency pathogenic variants in Shanxi Province. Taken together, our data will enrich the database of deafness mutations and will help clinical diagnosis, treatment, and genetic counseling of hearing impairment.
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Affiliation(s)
- Yongan Zhou
- Shanxi Medical University Second Affiliated Hospital, Taiyuan, Shanxi, China
| | - Chao Li
- The Graduate School, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Min Li
- The Graduate School, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Zhonghua Zhao
- Institute of Biomedical Sciences, Shanxi University, Taiyuan, Shanxi, China
| | - Shuxiong Tian
- The Graduate School, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Hou Xia
- The Graduate School, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Peixian Liu
- Shanxi Medical University Second Affiliated Hospital, Taiyuan, Shanxi, China
| | - Yaxin Han
- The Graduate School, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Ruirui Ren
- The Graduate School, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Jianping Chen
- The Graduate School, Shanxi Medical University, Taiyuan, Shanxi, China
| | - Caihong Jia
- Shanxi Medical University Second Affiliated Hospital, Taiyuan, Shanxi, China
| | - Wei Guo
- Xinzhou Traditional Chinese Medicine Hospital, Xinzhou, Shanxi, China
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6
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Zhao P, Lin L, Lan L. Analysis of mutation spectrum of common deafness-causing genes in Hakka newborns in southern China by semiconductor sequencing. Medicine (Baltimore) 2018; 97:e12285. [PMID: 30235673 PMCID: PMC6160144 DOI: 10.1097/md.0000000000012285] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 08/15/2018] [Indexed: 11/27/2022] Open
Abstract
Hearing loss is a common neurosensory disorder, approximately half of the cases are caused by genetic factors, and approximately 70% of hereditary hearing impairments are nonsyndromic hearing loss (NSHL). The mutations of GJB2 (gap junction beta-2 protein), GJB3 (gap junction beta-3 protein), SLC26A4 (solute carrier family 26 member 4), and MT-RNR1 (mitochondrially encoded 12S RNA) are the most common inherited causes of NSHL. Because of different genetic backgrounds, the mutation spectrum of these common deafness-causing genes varies among different regions in China. Because no data are known on these mutations among the Hakka population of Southern China, we aim to investigate the mutation spectrum to add these to neonatal screening and genetic counseling. A total of 1252 blood samples from newborns have been detected by semiconductor sequencing for 100 mutations loci of 18 deafness-causing genes. Of the participants, 95 subjects carried deafness-causing genes mutations with the carrier rate of 7.59%. The mutation frequencies of GJB2, SLC26A4, GJB3, and mitochondrial genes were 3.04%, 3.51%, 0.16%, and 0.88%, respectively. We followed up subjects with single-gene homozygous or compound heterozygous mutations. Our study firstly analyzed deafness-causing genes mutation spectrum in Hakka population, providing evidence for future neonatal screening and genetic counseling in this area.
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Affiliation(s)
- Pingsen Zhao
- Clinical Core Laboratory
- Center for Precision Medicine, Meizhou People's Hospital (Huangtang Hospital), Meizhou Hospital Affiliated to Sun Yat-sen University
- Guangdong Provincial Engineering and Technology Research Center for Molecular Diagnostics of Cardiovascular Diseases
- Meizhou Municipal Engineering and Technology Research Center for Molecular Diagnostics of Cardiovascular Diseases
- Meizhou Municipal Engineering and Technology Research Center for Molecular Diagnostics of Major Genetic Disorders
- Prenatal Diagnosis Center, Meizhou People's Hospital (Huangtang Hospital), Meizhou Hospital Affiliated to Sun Yat-sen University, Meizhou, P. R. China
| | - Lifang Lin
- Clinical Core Laboratory
- Center for Precision Medicine, Meizhou People's Hospital (Huangtang Hospital), Meizhou Hospital Affiliated to Sun Yat-sen University
- Guangdong Provincial Engineering and Technology Research Center for Molecular Diagnostics of Cardiovascular Diseases
- Meizhou Municipal Engineering and Technology Research Center for Molecular Diagnostics of Cardiovascular Diseases
- Meizhou Municipal Engineering and Technology Research Center for Molecular Diagnostics of Major Genetic Disorders
- Prenatal Diagnosis Center, Meizhou People's Hospital (Huangtang Hospital), Meizhou Hospital Affiliated to Sun Yat-sen University, Meizhou, P. R. China
| | - Liubing Lan
- Prenatal Diagnosis Center, Meizhou People's Hospital (Huangtang Hospital), Meizhou Hospital Affiliated to Sun Yat-sen University, Meizhou, P. R. China
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Y D, B-H X, Y-S T, G-C Z, J-H L. The Mitochondrial COI/tRNA SER(UCN) G7444A Mutation may be Associated with Hearing Impairment in a Han Chinese Family. Balkan J Med Genet 2018; 20:43-50. [PMID: 29876232 PMCID: PMC5972502 DOI: 10.1515/bjmg-2017-0025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Variations in mitochondrial genome have been found to be associated with hearing loss. Of these, the mitochondrial 12S rRNA and tRNASer(UCN) are the hot-spots for pathogenic variants associated with deafness. To understand the putative role of mitochondrial DNA (mtDNA) variants in hearing loss, we recently screened the variants in mitochondrial genomes in patients with deafness from the Hangzhou area of Zhejiang Province, People’s Republic of China (PRC). In this study, we describe a maternally-inherited Han Chinese family with high penetrance of hearing loss, notably, the penetrance of hearing loss in this family were 80.0 and 40.0%, when the aminoglycoside was included or excluded. Three matrilineal relatives in this pedigree exhibited different levels of hearing loss with different age at onset. In addition, sequence analysis of the complete mitochondrial genome showed the presence of the well-known C1494T pathogenic variant in the 12S rRNA gene and the G7444A pathogenic variant in the COI/ tRNASer(UCN). The C1494T anomaly had been reported to be a pathogenic mutation associated with aminoglycoside-induced and nonsyndromic hearing loss (AINHL), while the G7444A was considered as a secondary mutation associated with deafness. However, the lack of functional variants in GJB2 and TRMU genes suggested that nuclear modified genes may not play important roles in deafness expression. Thus, the combination of G7444A and C1494T pathogenic variants in the mitochondrial genome may account for the high penetrance of hearing loss in this Chinese family.
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Affiliation(s)
- Ding Y
- Central Laboratory, Hangzhou First People's Hospital, Hangzhou, People's Republic of China.,Affiliated Hangzhou Hospital, Nanjing Medical University, Hangzhou, People's Republic of China
| | - Xia B-H
- Department of Pharmacy, Hunan Chinese Medical University, Changsha, People's Republic of China
| | - Teng Y-S
- Affiliated Hangzhou Hospital, Nanjing Medical University, Hangzhou, People's Republic of China.,Department of Otolaryngology, Hangzhou First People's Hospital, Hangzhou, People's Republic of China
| | - Zhuo G-C
- Central Laboratory, Hangzhou First People's Hospital, Hangzhou, People's Republic of China.,Affiliated Hangzhou Hospital, Nanjing Medical University, Hangzhou, People's Republic of China
| | - Leng J-H
- Central Laboratory, Hangzhou First People's Hospital, Hangzhou, People's Republic of China.,Affiliated Hangzhou Hospital, Nanjing Medical University, Hangzhou, People's Republic of China
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Huang B, Han M, Wang G, Huang S, Zeng J, Yuan Y, Dai P. Genetic mutations in non-syndromic deafness patients in Hainan Province have a different mutational spectrum compared to patients from Mainland China. Int J Pediatr Otorhinolaryngol 2018; 108:49-54. [PMID: 29605365 DOI: 10.1016/j.ijporl.2018.02.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 01/18/2018] [Accepted: 02/11/2018] [Indexed: 10/18/2022]
Abstract
OBJECTIVES To provide appropriate genetic testing and counseling for non-syndromic hearing impairment patients in Hainan Province, an island in the South China Sea. METHODS 299 unrelated students with non-syndromic hearing loss who attended a special education school in Hainan Province were enrolled in this study. Three prominent deafness-related genes (GJB2, SLC26A4, and mtDNA 12S rRNA) were analyzed using Sanger sequencing. RESULTS GJB2 mutations were detected in 32.78% (98/299) of the entire cohort; however, only 5.69% (17/299) had two confirmed pathogenic mutations. The most common mutation observed in this population was c.109G > A in the GJB2 gene, with an allelic frequency of 15.05% (90/598), which is significantly higher than that reported in previous cohorts. A total of 16 patients had two confirmed pathogenic SLC26A4 gene mutations, and 16 patients had one. The IVS7-2A > G mutation was the most commonly observed, with an allelic frequency of 3.51% (21/598). Three patients had a m.1555A > G mutation in the mtDNA 12S rRNA gene. CONCLUSIONS These results reveal that genetic etiology occurred in 11.71% (35/299) of patients, suggesting that Hainan province have a different mutational spectrum compare to Mainland China in non-syndromic deafness patients, which provide useful information to genetic counseling in Hainan province.
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Affiliation(s)
- Bangqing Huang
- Department of Otorhinolaryngology, Hainan Branch of PLA General Hospital, Sanya 572013, PR China
| | - Mingyu Han
- Department of Otorhinolaryngology, Hainan Branch of PLA General Hospital, Sanya 572013, PR China; Department of Otolaryngology and Genetic Testing Center for Deafness, Chinese PLA General Hospital, Beijing 100853, PR China
| | - Guojian Wang
- Department of Otolaryngology and Genetic Testing Center for Deafness, Chinese PLA General Hospital, Beijing 100853, PR China
| | - ShaSha Huang
- Department of Otolaryngology and Genetic Testing Center for Deafness, Chinese PLA General Hospital, Beijing 100853, PR China
| | - Jialing Zeng
- Department of Otorhinolaryngology, Hainan Branch of PLA General Hospital, Sanya 572013, PR China
| | - Yongyi Yuan
- Department of Otolaryngology and Genetic Testing Center for Deafness, Chinese PLA General Hospital, Beijing 100853, PR China.
| | - Pu Dai
- Department of Otolaryngology and Genetic Testing Center for Deafness, Chinese PLA General Hospital, Beijing 100853, PR China.
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9
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Three MYO15A Mutations Identified in One Chinese Family with Autosomal Recessive Nonsyndromic Hearing Loss. Neural Plast 2018; 2018:5898025. [PMID: 29849560 PMCID: PMC5907479 DOI: 10.1155/2018/5898025] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Accepted: 12/03/2017] [Indexed: 01/06/2023] Open
Abstract
Hearing impairment is one of the most common sensory disease, of which more than 50% is attributed to a genetic etiology. The goal of this research is to explore the genetic cause of a Chinese deafness pedigree who was excluded of GJB2, SLC26A4, or MtDNA12SrRNA variants. Three variants, c.3971C>A (p.A1324D), c.4011insA (p.Q1337Qfs∗22), and c.9690+1G>A, in the MYO15A gene were identified by targeted capture sequencing and Sanger sequencing, and the first two of them were novel. These variants were cosegregated with the disease in this family and absent in 200 normal hearing persons. They were concluded to be pathogenic mutations by phylogenetic analysis and structure modeling. Thus, the combined use of SNPScan assay and targeted capture sequencing is a high-efficiency and cost-effective screening procedure for hereditary hearing loss. Genetic counseling would be important for this family, and our finding would be a great supplement to the mutation spectrum of MYO15A.
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10
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The comparison of the performance of four whole genome amplification kits on ion proton platform in copy number variation detection. Biosci Rep 2017; 37:BSR20170252. [PMID: 28572171 PMCID: PMC6434089 DOI: 10.1042/bsr20170252] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Revised: 05/16/2017] [Accepted: 06/01/2017] [Indexed: 12/28/2022] Open
Abstract
With the development and clinical application of genomics, more and more concern is focused on single-cell sequencing. In the process of single-cell sequencing, whole genome amplification is a key step to enrich sample DNA. Previous studies have compared the performance of different whole genome amplification (WGA) strategies on Illumina sequencing platforms, but there is no related research aimed at Ion Proton platform, which is also a popular next-generation sequencing platform. Here by amplifying cells from six cell lines with different karyotypes, we estimated the data features of four common commercial WGA kits (PicoPLEX WGA Kit, GenomePlex Single Cell Whole Genome Amplification Kit, MALBAC Single Cell Whole Genome Amplification Kit, and REPLI-g Single Cell Kit), including median absolute pairwise difference, uniformity, reproducibility, and fidelity, and examined their performance of copy number variation detection. The results showed that both MALBAC and PicoPLEX could yield high-quality data and had high reproducibility and fidelity; and as for uniformity, PicoPLEX was slightly superior to MALBAC.
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Li S, Peng Q, Liao S, Li W, Ma Q, Lu X. A reverse dot blot assay for the screening of twenty mutations in four genes associated with NSHL in a Chinese population. PLoS One 2017; 12:e0177196. [PMID: 28505178 PMCID: PMC5432070 DOI: 10.1371/journal.pone.0177196] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 04/23/2017] [Indexed: 11/18/2022] Open
Abstract
Background Congenital deafness is one of the most distressing disorders affecting humanity and exhibits a high incidence worldwide. Most cases of congenital deafness in the Chinese population are caused by defects in a limited number of genes. A convenient and reliable method for detecting common deafness-related gene mutations in the Chinese population is required. Methods We developed a PCR-reverse dot blot (RDB) assay for screening 20 hotspot mutations of GJB2, GJB3, SLC26A4, and MT-RNR1, which are common non-syndromic hearing loss (NSHL)–associated genes in the Chinese population. The PCR-RDB assay consists of multiplex PCR amplifications of 10 fragments in the target sequence of the four above-mentioned genes in wild-type and mutant genomic DNA samples followed by hybridization to a test strip containing allele-specific oligonucleotide probes. We applied our method to a set of 225 neonates with deafness gene mutations and 30 normal neonates. Results The test was validated through direct sequencing in a blinded study with 100% concordance. Conclusions The results demonstrated that our reverse dot blot assay is a reliable and effective genetic screening method for identifying carriers and individuals with NSHL among the Chinese population.
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Affiliation(s)
- Siping Li
- Department of Laboratory, Dongguan Children's Hospital, Dongguan, Guangdong, China
| | - Qi Peng
- Department of Medical and Molecular Genetics, Dongguan Institute of Pediatrics, Dongguan, Guangdong, China
| | - Shengyun Liao
- Shenzhen Yilifang Biotech CO., LTD., Shenzhen, China
| | - Wenrui Li
- Department of Laboratory, Dongguan Children's Hospital, Dongguan, Guangdong, China
| | - Qiang Ma
- Department of Medical and Molecular Genetics, Dongguan Institute of Pediatrics, Dongguan, Guangdong, China
| | - Xiaomei Lu
- Department of Laboratory, Dongguan Children's Hospital, Dongguan, Guangdong, China
- Department of Medical and Molecular Genetics, Dongguan Institute of Pediatrics, Dongguan, Guangdong, China
- * E-mail:
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A Novel Nonsense Mutation of POU4F3 Gene Causes Autosomal Dominant Hearing Loss. Neural Plast 2016; 2016:1512831. [PMID: 27999687 PMCID: PMC5143711 DOI: 10.1155/2016/1512831] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 10/11/2016] [Accepted: 10/24/2016] [Indexed: 11/18/2022] Open
Abstract
POU4F3 gene encodes a transcription factor which plays an essential role in the maturation and maintenance of hair cells in cochlea and vestibular system. Several mutations of POU4F3 have been reported to cause autosomal dominant nonsyndromic hearing loss in recent years. In this study, we describe a pathogenic nonsense mutation located in POU4F3 in a four-generation Chinese family. Target region capture sequencing was performed to search for the candidate mutations from 81 genes related to nonsyndromic hearing loss in this family. A novel nonsense mutation of POU4F3, c.337C>T (p. Gln113⁎), was identified in a Chinese family characterized by late-onset progressive nonsyndromic hearing loss. The novel mutation cosegregated with hearing loss in this family and was absent in 200 ethnicity-matched controls. The mutation led to a stop codon and thus a truncated protein with no functional domains remained. Transient transfection and immunofluorescence assay revealed that the subcellular localization of the truncated protein differed markedly from normal protein, which could be the underlying reason for complete loss of its normal function. Here, we report the first nonsense mutation of POU4F3 associated with progressive hearing loss and explored the possible underlying mechanism. Routine examination of POU4F3 is necessary for the genetic diagnosis of hereditary hearing loss in the future.
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