这是马尔巴赫-鲁斯塔德前性综合征的第三例,由一个新的LEMD2变体引起
Zhikun Lu1, Wen Zhang1, Xiaojian Mao1
1Department of Genetics and Endocrinology, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangdong Provincial Clinical Research Center for Child Health, Guangzhou, China.
Clinical genetics
|October 23, 2023
概括
马巴赫-鲁斯塔德前列腺综合征是一种罕见的遗传疾病,详细介绍了中国首例病例. 重新分析整个外体序列数据,确定了LEMD2基因变异,提高了罕见疾病的诊断效率.
科学领域:
- 遗传学 是一个遗传学.
- 罕见疾病 罕见疾病
- 分子生物学分子生物学
背景情况:
- 马尔巴赫-鲁斯塔德前列腺症候群是一种极其罕见的遗传疾病.
- 它是由LEMD2基因中的异质合体变异引起的.
- 在全球范围内,此前仅报告了两个病例和一个LEMD2变种.
研究的目的:
- 报告全球第三例和中国首例马尔巴赫-鲁斯塔德孕激素综合征的病例.
- 在患有前列腺特征的患者中确定遗传原因.
- 为了突出重新分析整个外组测序数据的实用性.
主要方法:
- 对试验物的临床评估.
- 整体外体序列 (WES) 和随后的重新分析.
- 桑格测序用于变种确认.
主要成果:
- 试验对象出现过早分娩,发育不良,面部异常,食困难,头骨缺陷和推迟运动里程碑,但智力和言语正常.
- 在WES数据的重新分析中,在LEMD2基因中发现了一种新异构的c.1436C>T (p.Ser479Phe) 变异.
- 桑格测序证实了试验对象的变种及其在他的父母和兄弟姐妹中缺席.
结论:
- 这项研究描述了全球第三例马尔巴赫 - 鲁斯塔德孕激素综合征的病例,也是中国首例.
- 建议LEMD2 c.1436C>T (p.Ser479Phe) 变种作为一个潜在的热点.
- 对WES数据的重新分析对于诊断罕见的遗传疾病至关重要,特别是当初始分析是负的时.
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