基于MRD的最佳终点,以支持新诊断的多发性骨髓瘤中适应应答的治疗终止
Smith Giri1, Binod Dhakal2, Natalie S Callander3
1University of Alabama at Birmingham, Birmingham, Alabama, United States.
Blood
|April 7, 2025
概括
持续最小残留疾病 (S-MRD) 低于10^-5是预测多发性骨髓瘤患者在固定时间治疗中无进展生存的最佳短期终点. 这一发现有助于优化治疗终止策略.
科学领域:
- 血液学 血液学 血液学
- 临床试验 临床试验
- 癌症研究 癌症研究
背景情况:
- 第一线四胞胎 (QUAD) 诱导疗法和自身干细胞移植 (ASCT) 显示治疗成功.
- 对固定时间治疗的兴趣正在增长,但治疗停止的最佳短期终点仍然不清楚.
研究的目的:
- 评估 QUAD+ASCT 后无进展生存期 (PFS) 的五个短期疗效终点的预测性表现.
- 确定最佳终点,以指导固定时间治疗中的治疗终止.
主要方法:
- 分析了221名II期临床试验患者的数据和一个机构数据库.
- 患者接受了QUAD+ASCT,如果在两个连续时间点中最小残留疾病 (MRD) 呈阴性,则停止治疗.
- 考克斯回归模型被用来评估终点,包括严格的完整反应 (sCR) 和持续的MRD (S-MRD) 在不同的水平 (<10^-5,<10^-6).
主要成果:
- 持续MRD<10^-5 (S-MRD<10^-5) 是PFS的最佳预测指标,具有最适合的模型 (AIC 417.2,C-stat 0.757).
- S-MRD<10^-5也为MRD复发或进展的风险提供了最好的预测模型.
- 这些发现在121名接受MRD指导终止治疗的患者中是一致的.
结论:
- 持续的MRD<10^-5是预测PFS的优越短期疗效终点,用于在ASCT后接受固定时间治疗的患者.
- 这一终点可以有效指导停止治疗的决定,并预测多发性骨髓瘤的结果.
- 该研究为优化固定时间治疗策略提供了经过验证的指标.
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