来自人类染色体11的小超数标记染色体
Thomas Liehr1, Monika Ziegler1, Luisa Person1
1Institute of Human Genetics, Jena University Hospital, Friedrich Schiller University, Jena, Germany.
Frontiers in genetics
|January 4, 2024
概括
小超数标记染色体11 (sSMC) 是罕见的. 这项研究定义了sSMC的关键基因组区域,并强调了诊断方面的挑战,包括潜在的单亲基因分裂.
科学领域:
- 细胞基因组学是什么?
- 人类遗传学 人类遗传学
- 罕见的染色体疾病 罕见的染色体疾病
背景情况:
- 小超数标记染色体 (sSMC) 是罕见的,染色体11衍生的sSMC (sSMC) 是非常罕见的.
- 在文献中以前只报告了39例sSMC的病例.
研究的目的:
- 对sSMC的病例数据进行审查和扩展.
- 在sSMC(11) 载体中划分与临床表型相关的关键基因组区域.
- 确定管理sSMC的诊断和预后挑战.
主要方法:
- 关于sSMC的综合文献审查 (11个案例).
- 包括18个新的未公布的案例.
- 分析了8例"中核近部分三症11"病例和4例DECIPHER病例.
主要成果:
- 定义的周心区域边界为11号染色体的短 (p) 和长 (q) 臂,与临床症状相关 (分别为2.63 Mb和0.96 Mb).
- 将没有三重敏感基因的染色体11的最小周心区域缩小到47.6860.52 Mb (GRCh37).
- 基于部分三发症所涉及的染色体臂的临床表现观察到的差异,尽管存在重叠.
结论:
- sSMC(11) 提出了诊断和预后挑战,特别是在产前环境中.
- 由于潜在的印记效应,应考虑11号染色体的单亲异构 (UPD) 在sSMC(11) 载体评估中.
- 由于信息性病例数量较少和重叠的表型,需要进行进一步的研究.
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