J Clin Oncol:化疗后采用鲁卡帕尼维持治疗DNA修复缺陷阳性转移性尿路上皮癌

2022-08-17 MedSci原创 MedSci原创

铂类化疗后采用鲁卡帕尼维持治疗可延长 DRD 生物标志物阳性 mUC 患者的无进展生存期

部分转移性尿路上皮癌 (mUC) 患者存在DNA 修复缺陷 (DRD) 表型,该表型可预测铂类化疗的益处。该研究评估了在化疗后用聚 ADP-核糖聚合酶抑制剂鲁卡帕尼在 DRD 生物标志物阳性 mUC 患者中转换维持治疗的效果。

化疗后 10 周内、且无癌症进展是 DRD 生物标志物阳性 mUC 患者被随机(1:1)分至鲁卡帕尼组(600 mg*2次/日)或安慰剂组,维持治疗直到疾病进展。主要终点是无进展生存期(PFS)。


两组患者的PFS和OS

在248位患者中,有74位(29.8%)是 DRD 生物标志物阳性,其中40位被随机分至两组(每组各20位)。中位随访了94.6周后,鲁卡帕尼组和安慰剂组分别有12位(60%)和20位(100%)获得PFS事件。鲁卡帕尼组和安慰剂组的中位PFS分别是35.3周和15.1周(风险比 0.53, p=0.07)。

在安全性人群(n=39)中,治疗相关不良反应多少低级别的。鲁卡帕尼组和安慰剂组的中位治疗疗程分别是10个和6个。常见的鲁卡帕尼治疗相关不良反应有疲劳(63.2% vs 30.0%)、恶心(36.8% vs 5.0%)、斑疹(21.1% vs 0%)和丙氨酸氨基转移酶升高(57.9% vs 10%)。

综上所述,铂类化疗后采用鲁卡帕尼维持治疗可延长 DRD 生物标志物阳性 mUC 患者的无进展生存期,而且耐受性可。有必要进一步在选定的 mUC 患者中评估 PARP 抑制剂的作用。

 

原始出处:

Simon J. Crabb, et al. A Randomized, Double-Blind, Biomarker-Selected, Phase II Clinical Trial of Maintenance Poly ADP-Ribose Polymerase Inhibition With Rucaparib Following Chemotherapy for Metastatic Urothelial Carcinoma. Journal of Clinical Oncology. August 12, 2022. https://ascopubs.org/doi/full/10.1200/JCO.22.00405.

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    2022-09-15 minlingfeng
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    2022-08-18 jambiya
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