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. 2018 Jul 5:2018:4920980.
doi: 10.1155/2018/4920980. eCollection 2018.

Genetic Etiology Study of Ten Chinese Families with Nonsyndromic Hearing Loss

Songqun Hu  1 , Feifei Sun  1 , Jie Zhang  1 , Yan Tang  1 , Jinhong Qiu  1 , Zhixia Wang  1 , Luping Zhang  1
Affiliations

Genetic Etiology Study of Ten Chinese Families with Nonsyndromic Hearing Loss

Songqun Hu et al. Neural Plast. .

Abstract

Nonsyndromic hearing loss has been shown to have high genetic heterogeneity. In this report, we aimed to disclose the genetic causes of the subjects from the ten Chinese deaf families who did not have pathogenic common genes/mutation. Next-generation sequencing (NGS) of 142 known deafness genes was performed in the probands of ten families followed by cosegregation analysis of all family members. We identified novel pathogenic variants in six families including p.D1806E/p.R1588W, p.R964W/p.R1588W, and p.G17C/p.G1449D in CDH23; p.T584M/p.D1939N in LOXHD1; p.P1225L in MYO7A; and p.K612X in EYA4. Sanger sequencing confirmed that these mutations segregated with the hearing loss of each family. In four families, no pathogenic variants were identified. Our study provided better understanding of the mutation spectrum of hearing loss in the Chinese population.

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Figures

Figure 1
Figure 1
Pedigrees, genetic findings, and audiograms for NT-1~3 (a), NT-4 (b), NT-5 (c), and NT-6 (d). The arrow shows the probands in each family.
Figure 2
Figure 2
Pedigrees and audiometric features of family NT-7 (a), NT-8 (b), NT-9 (c), and NT-10 (d).
See this image and copyright information in PMC

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