《Chinese Journal of Rehabilitation Theory and Practice》 ›› 2023, Vol. 29 ›› Issue (1): 119-124.doi: 10.3969/j.issn.1006-9771.2023.01.018

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Deafness genetic mutation spectrum in nonsyndromic hearing impairment associated with enlarged vestibular aqueducts

WANG Yi1a,2, CHEN Zhenbo1b,2, LI Yong3, WANG Jingqiao1a,2, LIU Zhizhong1a,2()   

  1. 1. a. Department of Clinical Laboratory; b. Department of Radiology, Beijing Bo'ai Hospital, China Rehabilitation Research Center, Beijing 100068, China
    2. Capital Medical University School of Rehabilitation Medicine, Beijing 100068, China
    3. Department of Radiology, Plastic Surgery Hospital, Chinese Academy of Medical Sciences, Beijing 100144, China
  • Received:2022-09-14 Revised:2022-10-11 Published:2023-01-25 Online:2023-02-17
  • Contact: LIU Zhizhong, E-mail: lzzlzb@126.com

Abstract:

Objective To investigate the deafness genetic mutation spectrum in nonsyndromic hearing impairment (NSHI) associated with enlarged vestibular aqueducts (EVA).

Methods From October, 2015 to August, 2016, 85 patients with NSHI from Hubei Yichang Special Education School were examined with temporal bone CT, and 20 deafness-related gene mutations in GJB2, GJB3, SLC26A4and mtDNA 12S rRNA were detected with matrix-assisted laser desorption/ionization time-of-flight mass spectrometry.

Results A total of 31 patients were found EVA with temporal bone CT. Compared with non-EVA patients, the proportion of deafness-related gene mutations was more in patients with EVA (χ2 = 11.160, P= 0.001), especially for c.919-2A>G mutation of SLC26A4 (χ2 = 23.870, P< 0.001).

Conclusion The deafness gene mutation spectrum is different in NSHI patients with or without EVA. It is needed to optimize genetic testing scheme for deafness for early diagnosis and intervention of NSHI associated with EVA.

Key words: nonsyndromic hearing impairment, enlarged vestibular aqueducts, gene mutation

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