在局部先进的直肠癌中,局部复发率高于KRAS Codon 13突变
Richard Sassun1,2, Annaclara Sileo1,2, Jyi Cheng Ng1
1Division of Colon and Rectal Surgery, Mayo Clinic, 200 First St. Southwest, Rochester, MN, 55905, USA.
Journal of gastrointestinal cancer
|November 25, 2025
概括
13号码子中的KRAS突变与直肠癌的局部复发有关. 术前基因检测可以改善局部晚期直肠癌 (LARC) 患者的风险分层.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 胃肠道手术 胃肠道手术
背景情况:
- 当地复发 (LR) 仍然是直肠癌治疗的挑战,尽管外科手术技术的进步,如全半直肠切除 (TME).
- 遗传突变在直肠癌的进展和复发中起作用.
- 在局部晚期直肠癌 (LARC) 中,KRAS突变对LR的影响尚不清楚.
研究的目的:
- 在局部晚期直肠癌 (LARC) 患者中调查KRAS突变和局部复发 (LR) 之间的关联.
- 确定特定的KRAS突变是否是LARC中LR的风险因素.
主要方法:
- 对LARC患者 (2018-2023) 的回顾性分析,比较KRAS突变和野生型队列.
- 倾向性得分匹配用于根据临床因素和治疗平衡群体.
- 单变Cox回归分析评估了KRAS突变对LR的影响.
主要成果:
- 在136名患者中 (68名KRAS突变,68名野生型),整体LR率为8.1%.
- 编码子13 (G13D/G13C) 中的KRAS突变与LR风险增加显著相关 (HR=7.06,p=0.001),LR率为33.3%.
- 其他KRAS突变与LR没有显著的关联.
结论:
- 在LARC中,Codon 13 KRAS突变可能是局部复发的重要风险因素.
- 由于样本规模有限,研究结果需要在更大的研究中进行验证.
- 手术前的KRAS突变测试可以帮助对LARC患者的风险分层.
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