埃及患有Treacher Collins综合征的患者的临床和分子研究
Nagham M Elbagoury1, Amira Nabil2, Asmaa F Abdel-Aleem1
1Medical Molecular Genetics Department, Human Genetics and Genome Research Institute, National Research Centre.
Clinical dysmorphology
|August 30, 2023
概括
这项研究在埃及患者中发现了TCOF1和POLR1D基因的新突变,这些患者患有Treacher Collins综合征 (TCS). 这项研究扩展了已知的TCS遗传原因,并帮助受影响家庭的遗传咨询.
科学领域:
- 遗传学 是一个遗传学.
- 头骨面部的发展
- 罕见疾病 罕见疾病
背景情况:
- 特里切尔·柯林斯综合征 (TCS) 是一种罕见的面发育障碍,具有多种遗传模式.
- TCOF1,POLR1D,POLR1C和POLR1B基因的突变是已知的原因,但在许多患者中,遗传基础仍然未知.
研究的目的:
- 对8名患有典型TCS的埃及患者进行分子遗传分析.
- 识别已知的TCS基因中的致病突变,并扩大突变谱.
- 在埃及和阿拉伯地区建立第一个TCS分子遗传研究.
主要方法:
- 整个外因组测序 (WES) 用于基因测试.
- 副本数变体 (CNV) 分析被纳入了WES方法.
- 针对TCS相关基因和RNA聚合酶I子单元进行了向基因分析.
主要成果:
- 鉴定出了五种异合体框架转移突变:四种在TCOF1中,一种在POLR1D中.
- 其中四种已识别的突变代表了新型变异,扩大了TCS.的已知突变谱.
- 在三名患者中没有发现致病变体,这表明其他潜在的遗传病因.
结论:
- 遗传分析对于准确的诊断和Treacher Collins综合征的遗传咨询至关重要.
- 识别新突变有助于了解TCS病原体,并可能有助于减少疾病发病率.
- 需要进一步的研究,以探索已知的基因中负面发现的患者中TCS未知的遗传原因.
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