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Hereditas(Beijing) ›› 2023, Vol. 45 ›› Issue (1): 29-41.doi: 10.16288/j.yczz.22-206

• Review • Previous Articles     Next Articles

Molecular diagnosis of hereditary deafness and application of stepwise testing strategy

Beiping Zeng1(), Hongen Xu2(), Lu Mao2, Wenxue Tang3()   

  1. 1. BGI College & Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450052, China
    2. Precision Medicine Center, Academy of Medical Science, Zhengzhou University, Zhengzhou 450052, China
    3. The Research and Application Center of Precision Medicine, The Second Affiliated Hospital of Zhengzhou University, Zhengzhou 450014, China
  • Received:2022-09-22 Revised:2022-10-29 Online:2023-01-20 Published:2022-11-04
  • Contact: Tang Wenxue E-mail:beipingzeng1120@163.com;beipingzeng1120@163.com;hongen_xu@zzu.edu.cn;hongen_xu@zzu.edu.cn;twx@zzu.edu.cn
  • Supported by:
    Supported by the Collaborative Innovation Project of Zhengzhou No(18XTZX12004);the Joint Project of Medical Science and Technology Research in Henan Province No(LHGJ20190317)

Abstract:

Hereditary deafness is one of the most common sensory disorders in humans, and exhibits high genetic heterogeneity. At present, the commonly used molecular diagnostic methods include gene chip, Sanger sequencing, targeted enrichment sequencing, and whole-exome sequencing, with diagnosis rates reaching 33.5%-56.67%. However, there are still a considerable number of patients who can not get a timely and definitive molecular diagnosis. Furthermore, considering the economic burden on patients’ families and the relatively high cost of whole-exome or whole-genome sequencing, it is vital to provide stepwise strategies combining multiple detection methods according to the phenotypes of patients. In this review, we evaluate and discuss the utility of molecular diagnosis and the application of stepwise testing strategies in hereditary deafness to provide reference for the selection of diagnostic strategies.

Key words: hereditary deafness, genetic heterogeneity, molecular diagnosis, high-throughput screening, stepwise testing strategy