在乳腺癌患者中CHEK2测序变异的生殖系变异概况
Claire McCarthy-Leo1, Scott Baughan1, Hunter Dlugas2
1Center for Molecular Medicine and Genetics, Wayne State University School of Medicine, Detroit, MI, United States.
Cancer genetics
|August 29, 2024
概括
这项研究调查了乳腺癌患者的CHEK2基因变异,确定了新型变异及其在不同人群中的患病率. 这些发现有助于了解遗传性癌症风险,并改善遗传咨询.
科学领域:
- 遗传学 遗传学 是一个
- 在瘤学瘤学.
- 分子生物学分子生物学
背景情况:
- CHEK2基因是一种瘤抑制剂,参与细胞循环和DNA修复.
- CHEK2变种增加了患乳腺癌,结直肠癌和前列腺癌的风险.
- 遗传风险评估可以改善早期癌症检测和患者的生存率.
研究的目的:
- 调查乳腺癌患者中生殖线CHEK2变异的流行情况.
- 为了识别和描述新的CHEK2变体.
- 探索CHEK2变种在多基因风险评估中的作用.
主要方法:
- 在210名乳腺癌患者身上进行了整体外组测序 (WES).
- 在非洲裔美国人和高加索人群中评估了CHEK2变种的患病率.
- 用功能分析和计算预测来评估变体的影响.
主要成果:
- 16名患者有非同义或移的CHEK2变异.
- 确定了两种新的框架转移变体 (c.1350delA,c.1528delC) 和一种新的误解变体 (c262C>T).
- 在非洲裔美国人和高加索人群中,患病率各不相同.
结论:
- 在乳腺癌患者中发现了新的CHEK2变异.
- 了解CHEK2变异的流行率对于准确的遗传风险评估至关重要.
- 功能数据有助于澄清临床管理的不确定的意义 (VUS) 的变异.
相关概念视频
02:26Comparing Copy Number Variations and SNPs
Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
01:05Cancer-Critical Genes II: Tumor Suppressor Genes
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
01:05Cancer-Critical Genes II: Tumor Suppressor Genes
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...