DNA损伤反应和修复基因突变预测胆道癌症的临床结果
Sirui Tan1, Mingyang Feng1, Nan Zhou1
1Department of Medical Oncology, Cancer Center, West China Hospital, Sichuan University, Chengdu, Sichuan Province, China.
Cancer
|January 29, 2025
概括
在胆道癌 (BTC) 患者中,有害的DNA损伤反应和修复 (DDR) 基因突变与用化疗或免疫疗法治疗时更好的结果相关. 这些突变显著提高了反应率和生存时间.
科学领域:
- 在瘤学瘤学.
- 遗传学 遗传学 是一个
- 癌症研究 癌症研究
背景情况:
- 胆道癌 (BTC) 是一组具有有限治疗选择的侵袭性恶性瘤.
- 了解BTC的遗传特征,特别是DNA损伤反应和修复 (DDR) 基因,对于确定治疗点和预测患者结果至关重要.
研究的目的:
- 调查胆道癌 (BTC) 中DDR基因变异的流行情况.
- 评估DDR基因突变对接受特定化疗和免疫治疗的BTC患者临床结果的影响.
主要方法:
- 对180名BTC患者的回顾性分析,并提供下一代测序数据.
- 临床结果的比较,包括客观反应率 (ORR),无进展生存率 (PFS) 和总生存率 (OS),在DDR阳性和DDR阴性患者组之间.
- 多变量分析以确认DDR突变与生存的独立关联.
主要成果:
- 在28.3%的BTC患者中发现了DDR基因突变,其中ATM,BAP1和BRCA2是最常见的.
- 接受基化疗的DDR阳性患者的ORR显著更高 (50.0%vs14.9%),PFS中位数更长 (7.7vs3.8个月) 和中位数更长的OS (28.6vs11.9个月).
- 同样,接受免疫治疗加化疗的DDR阳性患者表现出更高的ORR (45%与8.3%相比),更长的PFS中位数 (7.7与3.8个月相比) 和更长的OS中位数 (12.7与8.8个月).
结论:
- 有害的DDR基因突变与BTC患者的改善临床结果有显著的关联.
- DDR突变的存在预测了对基化疗和免疫疗法与BTC中的化疗相结合的更好的反应.
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