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<p>To investigate the novel genetic mutations and clinical characteristics in a patient with MYH9 related disease in order to enhance understanding of the disease. Clinical information was obtained, including medical history, pertinent laboratory tests, and family history. Whole exome sequencing (WES) was conducted on the patient and her parents. A 19-year-old female presented with a history of epistaxis and chronic thrombocytopenia. Her aunt and brother also have a history of thrombocytopenia. Sequencing analysis revealed mutations of MYH9 gene (c.5765 + 2T &gt; G) and HBB gene (c.126_129del) in the patient, with the c.5765 + 2T &gt; G mutation being previously unreported. The splice site mutation of MYH9 was predicted to be pathogenic by Mutation Taster and Polyphen software programs. As a result of identifying this splicing site mutation in this particular case, we have added c.5765 + 2T &gt; G to the broad spectrum of potential MYH9 mutations.</p>

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A novel MYH9 variant in a Chinese patient with MYH9 related disease

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年8月5日

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  • Haocheng Li,
  • Xiang Li,
  • Wanlei Sun,
  • Shaoqin Liu,
  • Mengyao Han,
  • Jiayi Feng,
  • Wenfeng He

摘要

To investigate the novel genetic mutations and clinical characteristics in a patient with MYH9 related disease in order to enhance understanding of the disease. Clinical information was obtained, including medical history, pertinent laboratory tests, and family history. Whole exome sequencing (WES) was conducted on the patient and her parents. A 19-year-old female presented with a history of epistaxis and chronic thrombocytopenia. Her aunt and brother also have a history of thrombocytopenia. Sequencing analysis revealed mutations of MYH9 gene (c.5765 + 2T > G) and HBB gene (c.126_129del) in the patient, with the c.5765 + 2T > G mutation being previously unreported. The splice site mutation of MYH9 was predicted to be pathogenic by Mutation Taster and Polyphen software programs. As a result of identifying this splicing site mutation in this particular case, we have added c.5765 + 2T > G to the broad spectrum of potential MYH9 mutations.