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分子诊断和植入前基因测试对染色体1q21.1的重复性微复制

Cuiting Peng^1,2, Han Chen^1,2, Fan Zhou^1,2

¹Department of Medical Genetics, West China Second University Hospital, Sichuan University, Chengdu, China.

Frontiers in genetics

|March 20, 2025

概括

植入前遗传检测 (PGT) 可以防止遗传性疾病的继承,如1q21.1微复制. 光学基因组映射 (OGM) 和PGT成功地确定了一个可行的胚胎,为经常复制拷贝数变异的家庭提供了希望.

科学领域:

遗传学遗传学是一个
生殖医学生殖医学
基因组技术基因组技术

背景情况:

分子诊断的进步使得临床上显著的副本数变异 (CNVs) 的检测成为可能.
植入前遗传检测 (PGT) 提供了一种方法,可以防止致病性CNV传播给后代.
1q21.1 复发性微复制是一种需要精确诊断和生殖策略的情况.

研究的目的:

应用分子诊断和PGT在一对具有1q21.1重复的微复制.
评估光学基因组映射 (OGM) 对于高分辨率检测染色体异常的有用性.
为了证明基于链接分析的PGT和PGT-无倍积分 (PGT-A) 的联合应用,用于胚胎选择.

主要方法:

使用光学基因组测绘 (OGM) 精确描述了1q21.1微复制的特征.
基于链接分析的PGT在家族谱系上进行.
在所有产生的胚胎上进行了高分辨率的PGT-无粒化 (PGT-A).

主要成果:

转基因生物成功验证了父亲1q21.1微复制的方向和位置.
来自链接分析和动脉质分析的PGT结果在目标区域内一致.
一个没有父亲的1q21.1q21.2重复的胚胎被确定并被选择用于移植.

结论:

转基因生物是一种高分辨率的方法,用于检测染色体异常,如微重复.
同时应用分子诊断和PGT是有效的防止特定遗传疾病的继承.
这一临床案例突出了先进的基因组技术的成功整合,用于在复发性CNVs的情况下进行生殖决策.

关键词:

马尔萨拉拉 (MARSALALA) 是一个微复制是微复制的方法.这是下一代测序.通过光学基因组映射进行基因组映射.植入前遗传检测是植入前的基因检测.

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