新生儿伪高阿尔多斯特隆症1型,具有新型NR3C2基因变异
1Department of Paediatrics, South West Acute Hospital, Enniskillen, UK.
Sudanese journal of paediatrics
|January 27, 2025
概括
伪双多斯特症 (PHA) 是一种罕见的疾病,模仿先天性上腺增生 (CAH). 在一个患有PHA型1的婴儿和他的无症状父亲身上发现了一种新的NR3C2基因变异,这突显了基因检测的重要性.
科学领域:
- 内分泌学 在内分泌学.
- 遗传学 是一个遗传学.
- 儿科 儿科 儿科
背景情况:
- 伪双多斯特症 (PHA) 是一种罕见的疾病,可以被误认为是先天性上腺增生症 (CAH).
- 类型PHA (PHA1A) 与NR3C2基因突变有关,受影响的父母尽管有生化异常,但可能没有症状.
- 准确的诊断依赖于仔细的荷尔蒙和生化数据解释以及内分泌学和专家之间的合作.
研究的目的:
- 报告一个新生儿被诊断患有PHA型1的病例.
- 为了识别和描述与这种疾病相关的新型异构合的NR3C2基因变异.
- 评估已识别的变种的致病性.
主要方法:
- 一个12天大的婴儿的临床表现和生物化学评估,盐分流失和脱水.
- 激素和生化测试,以区分CAH和PHA.
- 分子遗传测试用于识别婴儿及其父亲的基因突变.
- 使用美国医学遗传学和基因组学学院 (ACMG) 标准的变异分类.
主要成果:
- 婴儿被诊断患有PHA类型1,最初怀疑是CAH.
- 基因检测显示,婴儿及其父亲的新型异构合的NR3C2:c.1876T>G (p.(Phe626Val)) 变体.
- 父亲携带同一个变种,表现出无症状的过高阿尔多斯特主义.
- 鉴定的NR3C2变种根据ACMG标准被归类为可能致病的.
结论:
- 这一案例突出了NR3C2基因中一种可能致病的新型变异,导致PHA1型.
- 父亲的无症状高阿尔多斯特症强调NR3C2变体的可变表达性.
- 需要进一步的功能研究和确定更多的患者,以确认该变种的致病性.
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