ASCO-2021速递:复发胶质母细胞瘤,Nivolumab联合标准贝伐单抗可使年龄较大的患者受益

2021-06-07 Freeman MedSci原创

ASCO-2021速递:复发胶质细胞瘤,Nivolumab联合标准贝伐单抗可使年龄较大的患者受益

在复发胶质细胞瘤( recurrent glioblastoma,rGBM)中使用抗PD1的试验显示出有限的疗效。VEGF是GBM中高度上调的促血管生长因子,有助于肿瘤相关的免疫抑制。临床前数据表明,抗血管内皮生长因子治疗对免疫调节有潜在的剂量效应。因此,抗PD1和抗血管内皮生长因子的组合可能是一种有前途的rGBM治疗方法。

哈佛大学的Manmeet Singh Ahluwalia,等人,将90名首次复发的GBM患者随机(1:1)接受nivolumab(240毫克静脉注射,第2周)与贝伐珠单抗标准剂量(10毫克/公斤;臂A)或低剂量(3毫克/公斤;臂B)静脉注射,第2周。

分层因素包括切除范围、年龄、性能状态和MGMT甲基化状态。使用CITE-seq的单细胞RNA测序技术分析了8名反应者和8名非反应者治疗前和治疗后8周的血液样本。比较了两组患者的无进展生存期(PFS)和总生存期(OS)。

他们发现,90名患者(中位年龄60.6岁,范围为27.4-86.4,67.8%为男性)在2018年5月至2020年1月期间入组。患者的随访时间中位数为7.7个月。

88名患者中有35人是MGMT甲基化的(2人不确定)。总体OS在A组和B组之间没有明显差异(1年:41.1 vs 37.7%,P = 0.14),而年龄大于60岁的A组OS更好(1年时:46.2% vs 23.8%;中位数:10.6 vs 5.9月;P = 0.046)。

对于年龄≤60岁的患者,两组的OS没有差异(1年时:35.6% vs 56.4;中位数8.0 vs 12.4个月;P = 0.90)。

用CITE-seq的单细胞RNA测序法分析了16名患者的血样,基线和治疗后8周。标准剂量贝伐单抗治疗的患者在8周时骨髓派生抑制细胞和炎症反应基因特征减少。最常见的毒性(>20%)包括疲劳(45.6%)、蛋白尿(34.4%)、腹泻(28.9%)、高血压(23.3%)和脂肪酶增加(21.1%)。

3-4级的毒副作用是高血压(7.8%)、疲劳(5.6)和其他非神经系统的毒副作用,包括深静脉血栓、PE、感染和肝功能异常。

这个研究的重要意义在于,发现了与贝伐珠单抗的历史基准相比,尼沃鲁单抗与标准或低剂量贝伐珠单抗的总体PFS和OS率似乎相似。
Nivolumab联合标准贝伐单抗可能使年龄较大的患者受益,但对年轻患者没有好处。

原文出处:
Manmeet Singh Ahluwalia, Yasmeen Rauf, Hong Li, Patrick Y. Wen, David M. Peereboom, David A. Reardon; Rose Ella Burkhardt Brain Tumor and Neuro-Oncology Center, Neurological Institute, Taussig Cancer Institute and Cleveland Clinic, Cleveland, OH; Cleveland Clinic, Cleveland, OH; Cleveland Clinic Foundation, Cleveland, OH; Dana-Farber/Brigham and Women's Cancer Center, Harvard Medical School, Boston, MA; Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA
J Clin Oncol 39, 2021 (suppl 15; abstr 2015)
10.1200/JCO.2021.39.15\_suppl.2015

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    2021-09-05 snf701207
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    2021-10-17 quxin068
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    2022-01-07 tamgche
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