遗传性结肠直肠癌和多重症综合征是由不常见基因变异引起的
Ahmed Bouras1,2, Aurélie Fabre3, Hélène Zattara3
1Laboratory of Constitutional Genetics for Frequent Cancer HCL-CLB, Centre Léon Bérard, Lyon, France.
Genes, chromosomes & cancer
|August 9, 2024
概括
在NTLH1,AXIN2,RNF43,BUB1和TP53基因中的罕见遗传变异与遗传性结直肠癌 (CRC) 和多重症有关. 这些发现提高了对癌症倾向的理解,并指导了遗传咨询.
科学领域:
- 遗传学 是一个遗传学.
- 在瘤学瘤学.
- 分子生物学分子生物学
背景情况:
- 许多遗传性结肠直肠癌 (CRC) 和结肠多重症病例缺乏MMR,APC和MUTYH等已知基因的解释.
- 新兴研究表明,有几种潜在的倾向基因,每个基因都与有限数量的报告病例有关.
研究的目的:
- 在怀疑遗传性CRC或结肠多重症的患者中调查NTLH1,AXIN2,RNF43,BUB1和TP53基因的罕见变异.
- 评估这些变异对遗传性癌症综合征的临床意义和贡献.
主要方法:
- 对9名疑似遗传性CRC和/或结肠多重症的非相关患者进行基因分析.
- 罕见变异的检测和分类,包括致病或可能致病的变异 (PV/LPV).
主要成果:
- 在研究的队列中,在NTLH1,AXIN2,RNF43,BUB1和TP53中发现了罕见的变异.
- 检测到的七种变异被归类为PV/LPV.
- 携带者的临床特征通常与已知的综合征一致,观察到一些独特的特征.
结论:
- 这些不常见基因中的致病性/可能致病性变异可能占遗传性CRC或结肠多重症综合征的2.7%.
- 这些发现支持NTLH1,AXIN2,RNF43,BUB1和TP53在癌症倾向中的作用.
- 该研究有助于确定癌症谱和携带者的风险,为查和遗传咨询策略提供信息.
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