title: [Investigation of clinical features and detection of 79 known deafness genes in a large Chinese family with dominant non-syndromic hearing loss].
abstract: OBJECTIVE
  To investigate the clinical and genetic characteristics of a large family with late-onset, progressive autosomal dominant non-syndromic hearing loss.
  
  
  METHODS
  Collections of detail history hereditary features, physical and audiological examination were performed. After mutation screening of GJB2, SLC26A4, MTRNR1 (12SrRNA) genes by Sanger sequencing, the proband was investigated by targeted next-generation sequencing of 79 deafness genes.
  
  
  RESULTS
  This family included seven generations and 73 members. Eleven persons with hearing loss and 11 normal-hearing persons participated in this study. All affected members but one exhibited late-onset, progressive non-syndromic sensorineural hearing loss; the ages of onset were between 9 and 30 years. Mutation screening by sanger-sequencing and targeted next-generation sequencing excluded the possibility of pathogenic mutations within known deafness gene.
  
  
  CONCLUSIONS
  A Chinese family with late-onset progressive non-syndromic sensorineural hearing loss was investigated clinically and genetically. By candidate gene approach and targeted next-generation sequencing, this family was preliminary proved to be caused by unknown deafness gene.
authors.affiliation: Department of Otorhinolaryngology, People's Hospital of Kaihua, Zhejiang 324300, China.
authors.forename: Xiaojiang
authors.initials: X
authors.lastname: Lin
authors.forename: Dongye
authors.initials: D
authors.lastname: Chen
authors.affiliation: Department of Otolaryngology Head and Neck Surgery,Xinhua Hospital, Shanghai Jiaotong University School of Medicine, Shanghai Jiaotong University Ear Institute, Shanghai 200092, China. Email: wuhao622@sina.cn.
authors.forename: Hao
authors.initials: H
authors.lastname: Wu
authors.forename: Tao
authors.initials: T
authors.lastname: Yang
authors.forename: Dan
authors.initials: D
authors.lastname: Zhang
authors.forename: Yongchuan
authors.initials: Y
authors.lastname: Chai
mesh_terms: D044466:Asian People; D002681:China; D000072259:Connexin 26; D017630:Connexins; D003638:Deafness; D034381:Hearing Loss / Q000235:genetics*; D006319:Hearing Loss, Sensorineural; D006801:Humans; D009154:Mutation
chemical_list: D017630:Connexins; C000607042:GJB2 protein, human; D000072259:Connexin 26