KRAS和NRAS突变与结直肠癌中的微卫星状态相关:来自罗马尼亚的一项单中心研究
Ramona Abrudan1, Luca Abrudan2, Andreea Camarasan3
1Department of Psycho-Neurosciences and Rehabilitation, Faculty of Medicine and Pharmacy, University of Oradea, Oradea, ROU.
Cureus
|October 7, 2025
概括
这项研究检查了结直肠癌患者,发现KRAS和NRAS突变与全球率一致. 然而,高微卫星不稳定性 (MSI-H) 不太常见,MSI状态与瘤位置有关.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 结肠直肠癌是全球领先的恶性瘤,在罗马尼亚排名高.
- 了解MSI,KRAS和NRAS等分子标记物对于诊断和治疗至关重要.
- 研究这些标记物的相互作用为癌症异质性提供了洞察力.
研究的目的:
- 为了确定微卫星不稳定 (MSI) 状态与结直肠癌中KRAS和NRAS突变的共存.
- 分析与这些分子标记物相关的临床病理特征.
- 为罗马尼亚结直肠癌分子流行病学数据做出贡献.
主要方法:
- 分析了253名结直肠癌患者的临床病理学数据.
- 使用聚合酶链反应 (PCR) 来评估MSI状态.
- 基于PCR的KRAS和NRAS突变的检测.
主要成果:
- 在41.1%的患者中发现了KRAS突变,在5.1%的患者中发现了NRAS突变.
- 微卫星稳定性 (MSS) 在95.7%观察到,高微卫星不稳定性 (MSI-H) 在4.3%.
- 瘤局部显示与微卫星状态有显著的相关性 (p=0.032),其中包括结肠中的MSI-H瘤和直肠中的MSS.
结论:
- KRAS/NRAS突变的患病率与国际数据一致;MSI-H频率低于其他欧洲队列.
- 在瘤部位和MSI状态之间存在显著的关联.
- 这些发现增强了对这种人群中结直肠癌分子流行病学的理解,建议进行进一步的多中心研究.
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