组合的外体和全转录组测序识别出一种新的内体SRCAP变体,导致DEHMBA综合征与严重睡眠障碍
Silvia Morlino1, Lorenzo Vaccaro2,3, Maria Pia Leone1
1Division of Medical Genetics, Fondazione IRCCS-Casa Sollievo della Sofferenza, Viale Cappuccini snc, 71013, San Giovanni Rotondo, Foggia, Italy.
Journal of human genetics
|March 6, 2024
概括
这项研究强调了一种新的遗传变异,导致发育延迟,低血压,肌肉骨缺陷和行为异常 (DEHMBA) 综合征. 结合外体和全转录组测序证明在诊断这种罕见的遗传疾病方面是有效的.
科学领域:
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
- 罕见疾病 罕见疾病
背景情况:
- 浮动港综合征与特定的SRCAP基因变异有关.
- 在SRCAP的其他区域的异构性零等位基因导致DEHMBA综合征,其特征是发育迟缓和其他异常.
研究的目的:
- 为了确定一个18岁的男性患者DEHMBA综合征的遗传原因.
- 评估外基因组测序 (ES) 和全转录基因组测序 (WTS) 在诊断罕见遗传疾病方面的联合疗效.
主要方法:
- 外体序列 (ES) 和全转录组序列 (WTS) 在外周血液上进行.
- 使用三组分析来优先考虑候选变体.
- 转录组分析发现了多个异常转录.
主要成果:
- 在SRCAP基因中发现了一种新异构变异 (c.5658+5G>A),被认为是DEHMBA综合征的可能原因.
- WTS揭示了四种不同的异常转录,其中三种导致移突变,证实了病原性.
- 患者还出现了阻塞性睡眠呼吸暂停,这是潜在的诊断不足的并发症.
结论:
- 结合ES-WTS是一种强大的方法来诊断复杂的遗传疾病,如DEHMBA综合征.
- 睡眠呼吸障碍可能是DEHMBA综合征的一个未被认可的临床特征.
- 这一案例扩大了对SRCAP基因变异相关表型的理解.
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