将转移导向疗法添加到Oligometastatic乳腺癌的标准治疗系统疗法 (EXTEND):一个多中心,随机的第二阶段试验
Jay P Reddy1, Alexander D Sherry1, Bryan Fellman2
1Department of Radiation Oncology, The University of Texas MD Anderson Cancer Center, Houston, Texas.
International journal of radiation oncology, biology, physics
|November 1, 2024
概括
将转移导向疗法 (MDT) 添加到标准护理系统疗法中,并没有改善小细胞转移性乳腺癌患者的无进展生存期 (PFS). 这项研究表明,MDT可能不会为未经选择的患有这种疾病的患者提供系统性益处.
科学领域:
- 在瘤学瘤学.
- 乳腺癌研究研究 乳腺癌研究
- 临床试验 临床试验
背景情况:
- 低基质乳腺癌是一个独特的临床挑战.
- 之前的证据暗示,在精选的固体瘤中,转移导向疗法 (MDT) 与标准护理 (SOC) 系统疗法相结合的潜在无进展生存 (PFS) 益处.
- 缺乏专门评估这种组合在乳腺癌中的随机试验.
研究的目的:
- 研究将MDT添加到SOC系统疗法的有效性,以改善Oligometastatic乳腺癌患者的PFS.
- 为了确定MDT是否在这个患者群体中提供生存优势或延迟疾病进展.
主要方法:
- 进行了一项多中心的2期随机化篮子试验 (NCT03599765).
- 转移率≤5的患者被随机分配1:1接受MDT加SOC全身治疗或单独接受SOC全身治疗.
- 主要终点是PFS,次要终点包括整体存活率和新转移的时间.
主要成果:
- 该研究招募了43名患者 (22名在MDT手臂,21名在非MDT手臂).
- 随访时间中位数为24.8个月,MDT并没有显著改善PFS (15.6个月使用MDT与24.9个月不使用MDT;HR,0.91;P = .86).
- 没有观察到总体存活率,随后治疗的时间或新转移的时间有显著差异;生活质量和免疫反应措施也没有显著差异.
结论:
- 在患有小卵性乳腺癌的患者中,将MDT添加到SOC系统治疗中没有增强PFS.
- 这些发现表明,在未经选择的乳腺癌患者中,MDT可能不会提供全身益处.
- 限制包括一个小的,异质的样本大小和两个治疗臂的过度性能.
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