新型化合物异质合体MYO15A拼接变体在自体逆性非综合征性听力损失中
Kaifeng Zheng1, Sheng Lin2, Jian Gao1
1Laboratory of Molecular Medicine, Institute of Maternal and Child Medicine, Affiliated Shenzhen Maternity & Child Healthcare Hospital, Southern Medical University, Shenzhen, China.
BMC medical genomics
|January 3, 2024
概括
基因测试在MYO15A基因中发现了复合异质合体拼接变体,揭示了中国一家人患有自身逆性非综合征感应神经听力损失 (ARNSHL) 的原因. 这一发现有助于诊断和管理遗传性听力损失.
科学领域:
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
- 耳鼻喉科 耳鼻喉科 耳鼻喉科
背景情况:
- 遗传性听力损失是一种复杂的遗传性疾病,有多种原因.
- 自体逆性非综合征感应神经听力损失 (ARNSHL) 是一个重大的诊断挑战.
- 确定ARNSHL的遗传基础对于诊断和潜在的治疗非常重要.
研究的目的:
- 为了确定汉族中国家庭ARNSHL的遗传病因.
- 研究与聋相关基因中的新型变异.
- 描述已识别的变异对基因拼接的功能影响.
主要方法:
- 下一代测序 (NGS) 用于在已知和向的聋症基因中检测变异.
- 进行了长距离PCR和向外测序.
- 桑格测序证实了家族内的变异分离.
- 在分析和小基因测试中评估了变异对MYO15A基因剪接的影响.
主要成果:
- 在试验中,在MYO15A基因中发现了两种致病性化合物异构合变体 (c.6177+1G>T和c.9690+1G>A).
- 生物信息学预测表明,这些变体可能会导致表子跳转和加密拼接部位的激活.
- 在体外微型基因测试验证了预测的拼接缺陷.
结论:
- 这项研究确定了MYO15A基因中的复合异合拼接变体是研究家族中ARNSHL的原因.
- 这一发现扩大了已知的MYO15A基因突变谱.
- 这些发现有助于改善遗传性听力损失的早期诊断,预防和治疗策略.
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