[一个患有mos 46,X,psu idic(X) ((q21.3) 的孩子的遗传分析[40]/45,X[3]]
Ting Yin1, Fang Zhang, Xinxin Tang
1Central Laboratory, Lianyungang Maternal and Child Health Care Hospital, Lianyungang, Jiangsu 222062, China. wangleileiok@qq.com.
概括
结构性染色体异常,特别是伪中心性异构染色体X (psu idic(X)),在一个13岁的女孩身上引起了生殖腺发育不良. 在Xq21.32q28中删除与特纳综合征类似的特征有关.
科学领域:
- 遗传学 遗传学 是一个
- 生殖医学 生殖医学
- 儿科 儿科 儿科
背景情况:
- 淋巴管发育不良症在儿科内分泌学中是一个复杂的挑战.
- 了解生殖腺功能失调的遗传基础对于准确的诊断和管理至关重要.
- 结构性染色体异常,特别是涉及X染色体的染色体异常,与各种形式的淋巴腺功能障碍有关.
研究的目的:
- 调查特定的结构染色体异常与儿科患者淋巴腺发育不良的临床表现之间的相关性.
- 为了分析一个13岁女孩的遗传和表型特征,她患有初级异常和生殖腺异常.
主要方法:
- 一个13岁的女孩的案例研究,患有初级缺血和腹部疼痛.
- 收集和分析临床数据,从患者和家长的外周血液样本.
- G-绑定染色体型化和复制数变异测序 (CNV-seq).
- 通过使用关键词"pseudodual centromere isochromosome X"和"psu idic(X"进行回顾性文献搜索.
主要成果:
- 患者出现了原发性 amenorrhea,高FSH和LH,低E2,小卵巢和初级子宫.
- 型化发现了46,X,psu idic(X) ((q21.3)/45,X的马赛克,与正常的父母型.
- CNV-seq发现Xq21.32q28中的删除和Xp22.33q21.32.32中的重复.
- 文献审查表明,在类似的情况下,与马赛克率和断点位置相关的多种现象类型.
结论:
- 确定的46,X,psu idic(X)(q21.3)/45,X型可能是患者子宫和卵巢发育不良以及激素异常的原因.
- 删除Xq21.32q28是导致特纳综合征类型表型的重要因素,包括原始子宫和卵巢发育不良.
- 在这种情况下,尽管染色体异常,身高并没有受到显著的影响.
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