一个研究由表观遗传修饰基因变异引起的矮身的基因型和表型
Huakun Shangguan1, Jian Wang2, Jinduan Lin1
1Department of Endocrinology, Genetics and Metabolism, Fuzhou Children's Hospital of Fujian Medical University, Fuzhou, 350000, China.
European journal of pediatrics
|January 3, 2024
概括
表观遗传机器基因中的遗传变异会导致与矮身和多器官问题相关的门德尔病. 这项研究发现了新的变体和表型,改善了对这些罕见疾病的诊断.
科学领域:
- 遗传学 遗传学 是一个
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 儿科 儿科 儿科
- 罕见疾病 罕见疾病
背景情况:
- 表观遗传机制的孟德尔性疾病 (MDEMs) 是影响表观遗传调节的遗传条件.
- 这些疾病往往具有重叠的表型,包括多器官异常和矮身.
- 准确的诊断依赖于在表观遗传调节基因内识别特定的遗传变异.
研究的目的:
- 为了确定MDEMs的诊断率在矮身患者多器官异常.
- 描述与矮身相关的MDEMs的临床和遗传特征.
- 识别与表观遗传机制基因相关的新型变异和表型.
主要方法:
- 分析了来自214名具有多器官异常的矮身患者的临床信息.
- 整体外基因组测序 (WES) 用于识别致病性/可能致病性变体.
- 基因组和表型数据分析以将变异与临床特征相关联.
主要成果:
- 在33名患者的19个表观遗传调制基因中,全外体测序确定了33种致病性/可能致病性变体,占诊断率的15.4%).
- 其中19种变种以前没有报告过.
- 共同特征包括发育迟缓/智力障碍 (93.9%),小手 (42.4%),小眼 (42.4%),长毛 (39.4%) 和听力障碍 (27.3%).
- 报告了与特定基因变异相关的新型表型,包括俱乐部 (KMT2A),子 (SETD5),视网膜脱落 (CREBBP),稀疏的眉毛 (HUWE1) 和特定的眼异常 (SRCAP).
结论:
- 这项研究为了解与表观遗传机制基因变异相关的矮身提供了新的框架.
- 特定的临床发现可能表明,在矮身患者中存在表观遗传基因变异.
- 识别新型变体和表型扩大了对MDEMs的知识.
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