在低风险扩散型大B细胞淋巴瘤的早期正子发射断层扫描响应适应治疗:一个开放标签,多中心,随机,非劣势的第三阶段试验
Jean-Marie Michot1, Serge Bologna2, Jean-Noël Bastie3
1Gustave Roussy Cancer Campus, Villejuif, France.
概括
临时PET扫描可以安全地缩短低风险扩散性大B细胞淋巴瘤 (DLBCL) 患者的R-CHOP治疗. 这种适应PET的方法可以降低毒性,而不会影响无进展的生存率.
科学领域:
- 血液学 血液学 血液学
- 在瘤学瘤学.
- 放射学 放射学是一门学科.
背景情况:
- 初步数据表明,临时正子发射断层扫描 (PET) 可以指导有限阶段扩散大B细胞淋巴瘤 (DLBCL) 的治疗持续时间.
- 这项研究评估了PET反应适应的前线治疗方法,用于DLBCL患者的低年龄调整国际预后指数 (aaIPI) 风险.
- 该策略旨在根据R-CHOP化疗的2个周期后的PET反应来缓解治疗持续时间.
研究的目的:
- 与低风险DLBCL的标准治疗相比,评估PET适应的R-CHOP治疗降级策略的非劣势.
- 为了评估PET响应在2次R-CHOP循环后对治疗持续时间的影响.
- 为了比较PET适应和标准处理臂之间的毒性概况.
主要方法:
- 一个第三阶段,开放标签,多中心,随机非劣势性试验 (LNH2009-1B) 涉及650名以前未经治疗的DLBCL患者 (18-80岁,aaIPI=0).
- 患者被分配到PET适应臂 (PET阴性R-CHOP4个周期,PET阳性2个周期后6个周期) 或标准臂 (6个周期R-CHOP无论PET结果).
- 主要终点是3年无进展生存期 (PFS).
主要成果:
- 在PET适应组的3年PFS为92.0%,而在标准组为89.2%,表明非劣势 (HR 0.72,p<0.0001).
- 在PET适应手臂中的77.7%的患者在2个循环后获得了PET阴性,并且只接受了4个循环的R-CHOP.
- 适应PET的手臂显著减少了≥3级不良事件 (54.7%与62.7%) 和严重不良事件 (9.5%与14.2%).
结论:
- 早期使用R-CHOP适应PET的方法对低风险DLBCL患者有益.
- 这一策略有效地将毒性降到最低,而不会影响治疗的有效性.
- 在R-CHOP的2个周期后的PET反应可以指导DLBCL的前线治疗中的降级.
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