在T3-4/N0+直肠癌中,新辅助剂中期与长期化学放射治疗:伊斯坦布尔R-02第二阶段随机研究
Sukran Senyurek1, Sezer Saglam2, Esra Kaytan Saglam3
1Department of Radiation Oncology, Koc University School of Medicine, Istanbul, 34450, Türkiye.
Oncology research
|August 7, 2023
概括
对直肠癌的中期化学放射治疗 (CRT) 显示了与长期CRT相似的瘤结果,但毒性较小. 这项研究比较了这两种手术前治疗局部晚期直肠癌 (LARC) 的方法.
科学领域:
- 在瘤学瘤学.
- 辐射瘤学 辐射瘤学
- 胃肠道瘤学 胃肠道瘤学
背景情况:
- 可切除局部晚期直肠癌 (LARC) 的标准手术前治疗包括短期放射治疗 (SC-RT) 或长期RT (LC-RT) 与化学疗法并发.
- 之前的一项II期研究表明,中程 (IC) 化学放射治疗 (CRT) 与同时服用capecitabine的结果与LC-CRT相似.
研究的目的:
- 为了比较病理/瘤结果,毒性概况和中期CRT (IC-CRT) 和长期CRT (LC-CRT) 之间的生活质量.
- 在IC-CRT和LC-CRT设置中评估一种新型时调节capecitabine疗法的疗效和安全性.
主要方法:
- 一项II期随机试验包括60名LARC患者,他们被分配给IC-CRT (33 Gy/10 fr) 或LC-CRT (50.4 Gy/28 fr).
- 两组同时接受了时调制的capecitabine (布朗奇疗法).
- 评估了病理反应,瘤回归度,5年整体存活率,毒性 (皮肤炎,血液学) 和生活质量 (EORTC QLQ-CR29).
主要成果:
- 在病理结局方面没有发现显著差异,包括完全响应率 (23.3%对16.7%) 和下降阶段 (50%对50%).
- 五年整体生存率相似 (73.3%与86.7%).
- 在LC-CRT组中,急性辐射皮肤炎和血液毒性显着更高 (分别p < 0.001和p = 0.004).
结论:
- 与capecitabine并发的中程CRT为LARC提供了与长期CRT相比的可比的病理和瘤结果.
- 与LC-CRT相比,IC-CRT显示急性辐射皮肤炎和血液毒性发生率明显较低.
- 在这两种治疗方式之间,生活质量评分没有显著差异.
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