J Immunother Cancer:转移性Merkel细胞癌采用Avelumab作一线治疗的缓解率

2021-08-04 Nebula MedSci原创

mMCC患者使用Avelumab作为一线治疗可获得40%的缓解率和30%的持久缓解率

Merkel细胞癌(MCC),又名皮肤神经内分泌癌、原发性皮肤类癌、原发性皮肤小细胞癌、原发性神经母细胞瘤等,是一种皮肤侵袭性神经内分泌肿瘤。Merkel细胞癌是目前已知恶性程度最高的原发性皮肤肿瘤,其死亡率为恶性黑色素瘤的2倍,易复发、转移,预后极差。

Avelumab是一种抗DP-L1抗体,已在多个国家获批用于治疗转移性Merker细胞癌(mMCC)。

本文报告了在一项II期临床试验中使用Avelumab作为一线治疗在mMCC患者队列中的疗效和安全性数据,以及探索性的生物标志物分析

该试验受试者为初治的mMCC患者,每两周接受一次Avelumab(10 mg/kg,静滴)治疗。主要终点是缓解持续时间。次要终点包括无进展生存期(PFS)、总生存期(OS)、安全性和生物标志物分析。

总生存期

共有116位患者接受了Avelumab治疗,中位随访时间为21.2个月。35位患者的缓解持续时间≥6个月,持续缓解率为30.2%。客观缓解率为39.7%。中位PFS为4.1个月,中位OS为20.3个月。

PD-L1+肿瘤、Merkel细胞多瘤病毒 (MCPyV) 阴性肿瘤和瘤内CD8+T细胞密度增加的肿瘤患者的缓解率均高于总体缓解率。探索性分析未发现能够可靠地预测对受试患者对Avelumab一线治疗的反应的生物标志物;但是,一种新的基因表达特征可鉴定MCPyV+肿瘤的存在。

治疗相关不良事件

研究期间,共发生了94例 (81.0%) 任何级别的与治疗相关的不良事件,其中3/4级事件21例 (18.1%);无治疗相关死亡发生。

总而言之,mMCC患者使用Avelumab作为一线治疗可获得40%的缓解率和30%的持久缓解率;而且,3/4级治疗相关不良事件的发生率较低

原始出处:

D'Angelo Sandra P,Lebbé Celeste,Mortier Laurent et al. First-line avelumab in a cohort of 116 patients with metastatic Merkel cell carcinoma (JAVELIN Merkel 200): primary and biomarker analyses of a phase II study.[J] .J Immunother Cancer, 2021, https://doi.org/10.1136/jitc-2021-002646

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    2022-05-28 snf701207
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    2021-12-13 chenlianhui
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    2021-08-05 fangcong
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    2021-08-03 SR~young海东

    关注医学

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