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A Novel Spontaneous Mutation of the SOX10 Gene Associated with Waardenburg Syndrome Type II.


ABSTRACT: Waardenburg syndrome (WS), also known as auditory-pigmentary syndrome, is the most common cause of syndromic hearing loss. It is responsible for 2-5% of congenital deafness. WS is classified into four types depending on the clinical phenotypes. Currently, pathogenic mutation of PAX3, MITF, EDNRB, EDN3, SNAI2, or SOX10 can cause corresponding types of WS. Among them, SOX10 mutation is responsible for approximately 15% of type II WS or 50% of type IV WS. We report the case of a proband in a Chinese family who was diagnosed with WS type II. Whole exome sequencing (WES) of the proband detected a novel heterozygous spontaneous mutation: SOX10 c.246delC. According to analysis based on nucleic acid and amino acid sequences, this mutation may produce a truncated protein, with loss of the HMG structure domain. Therefore, this truncated protein may fail to activate the expression of the MITF gene, which regulates melanocytic development and plays a key role in WS. Our finding expands the database of SOX10 mutations associated with WS and provides more information regarding the molecular mechanism of WS.

SUBMITTER: Chen S 

PROVIDER: S-EPMC7474791 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature

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A Novel Spontaneous Mutation of the <i>SOX10</i> Gene Associated with Waardenburg Syndrome Type II.

Chen Sen S   Jin Yuan Y   Xie Le L   Xie Wen W   Xu Kai K   Qiu Yue Y   Bai Xue X   Zhang Hui-Min HM   Liu Xiao-Zhou XZ   Wang Xiao-Hui XH   Kong Wei-Jia WJ   Sun Yu Y  

Neural plasticity 20200828


Waardenburg syndrome (WS), also known as auditory-pigmentary syndrome, is the most common cause of syndromic hearing loss. It is responsible for 2-5% of congenital deafness. WS is classified into four types depending on the clinical phenotypes. Currently, pathogenic mutation of <i>PAX3</i>, <i>MITF</i>, <i>EDNRB</i>, <i>EDN3</i>, <i>SNAI2</i>, or <i>SOX10</i> can cause corresponding types of WS. Among them, <i>SOX10</i> mutation is responsible for approximately 15% of type II WS or 50% of type I  ...[more]

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