The heterozygous EDNRB mutation in a Chinese family with Waardenburg syndrome type I
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Juan Deng. Department of Ophthalmology, the Third Affiliated Hospital of Sun Yat-sen University, 600 Tianhe Road, Guangzhou 510630, Guangdong Province, China. viviadeng@163.com

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Supported by Medical Scientific Research Foundation of Guangdong Province (No.A2016271); Guangdong Natural Science Foundation (No.2016A030313208).

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    Abstract:

    The genovariation of endothelin receptor type B (EDNRB) was identified in a Chinese family with Waardenburg syndrome type I (WS1) in the present study. WS1 was diagnosed in a 19-year-old young man, his older sister and aunt according to WS consortium criteria. After extracting genomic DNA from the peripheral blood samples, the coding exons and intronic regions of EDNRB were sequenced. A missense heterozygous mutation was found in the coding region of exon 2 in the EDNRB gene on chormosome 13q22.3 of the proband. The same mutation was detected in the proband’s afflicted paternal aunt and first older sister. Subsequent polyphen analysis and three-dimensional modeling confirmed that the c.469A>G heterozygous mutation in EDNRB was possibly pathogenic. This is the first report of EDNRB mutation as a potential disease-causing mutation in Chinese patients with WS1.

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Huan-Huan Cheng, Shi-Qi Ling, Pei-Zhen Zhao, et al. The heterozygous EDNRB mutation in a Chinese family with Waardenburg syndrome type I. Int J Ophthalmol, 2019,12(9):1507-1509

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Publication History
  • Received:February 11,2019
  • Revised:May 20,2019
  • Adopted:
  • Online: August 02,2019
  • Published: