Dato-DXd针对转移性三阴性乳腺癌的3期临床试验启动,结果令人期待!

2022-08-27 MedSci原创 MedSci原创

Datopotamab deruxtecan (Dato-DXd) 是一种 TROP2 导向的 DXd 抗体药物偶联物,被给予首例先前未经治疗的局部复发性不可手术或转移性三阴性乳腺癌 (mTNBC)

Datopotamab deruxtecan (Dato-DXd) 是一种 TROP2 导向的 DXd 抗体药物偶联物,被给予首例先前未经治疗的局部复发性不可手术或转移性三阴性乳腺癌 (mTNBC) 不符合接受 PD-1/PD-L1 抑制剂治疗的患者。

大约 10% 到 15% 的乳腺癌被认为是三阴性乳腺癌,是最具侵袭性的乳腺癌亚型。与其他乳腺癌亚型患者相比,转移性 TNBC 患者的预后通常更差,长达 5 年生存率估计为 12%,中位总生存期通常少于两年。 TNBC 定义为雌激素和孕激素受体 (HR) 以及人表皮生长因子 2 受体 (HER2) 检测呈阴性的肿瘤,如通过 IHC 测试和/或 ISH 测试确定; HER2 阴性癌症目前定义为 IHC 0、IHC 1+ 或 IHC 2+/ISH-.

在 TROPION-PanTumor01 中 44 名患者的 mTNBC 队列中,通过盲法独立中央审查 (BICR) 得出的客观缓解率为 34%,其中包括 32% 的患者的完全缓解 (CRs) 或部分缓解 (PRs),并且疾病稳定( SD) 为 39%。值得注意的是,5% 的患者无法评估反应,8 名患者出现疾病进展 (PD)。总体疾病控制率(DCR)为77%。数据截止时有 1 个 CR/PR 待确认。

一部分患者 (n = 27) 之前未接受过抗体药物偶联物的治疗,在这些患者中,使用 Dato-DXd 的 ORR 为 53%。在 48% 中观察到确认的 CR 和 PRS,在 33% 中观察到 SD。该子集中 4% 的患者无法评估反应,15% 的患者患有 PD。在数据截止时,子集中的 CR/PR 也有待确认。在分析中未达到中位反应持续时间(范围,2.7-7.4+ 个月)。

在 TROPION-PanTumor01 中使用 Dato-DXd 观察到的最常见的治疗出现的不良事件 (TEAE) 是恶心、口腔炎、呕吐和疲劳。 18% 的患者因 AE 导致剂量减少,14% 的患者因 AE 出现治疗中断。有 1 次治疗因 AE 而中断,但没有与 AE 相关的死亡。

TROPION-Breast02 是一项 3 期、开放标签、随机研究,比较 Dato-DXd 与研究者在一线局部复发性不可手术或转移性三阴性乳腺癌(mTNBC) 中不适合 PD-1/PD-L1 抑制剂治疗的患者选择化疗。该研究的目的是评估 datopotamab deruxtecan 的安全性和有效性,选择无进展生存期 (PFS) 和总生存期 (OS) 作为共同主要终点。

该研究将包括 600 名患者。除了 PFS 和 OS,该研究还将评估客观反应、反应持续时间、研究者评估的 PFS、恶化时间、首次后续治疗时间、PFS2、药代动力学、Dato-DXd 的免疫原性和安全性作为次要终点.

为符合纳入研究的条件,患者在筛查时必须至少年满 18 岁,且有组织学或细胞学记录的局部复发性不能手术或 mTNBC。患者必须未接受过先前的化疗,没有资格接受 PD-1/PD-L1 治疗,并且没有怀孕。女性必须在绝经后至少 1 年才能入组。要求还包括根据 RECIST v1.1 显示可测量的疾病,ECOG 性能评分为 0 或 1,器官和骨髓功能足够,器官和骨髓功能足够,以及 12 个月的最短预期寿命。

阿斯利康首席医疗官兼肿瘤学首席开发官 Cristian Massacesi 医学博士在一份声明中说:“ datopotamab deruxtecan 对预先治疗过的转移性三阴性乳腺癌患者的初步结果令人鼓舞,这是一个显着未满足需求的群体。” “我们正在这些早期结果的基础上推进 TROPION-Breast02 试验,这是 datopotamab deruxtecan 在乳腺癌中的第二个关键试验,以确定这种抗体药物偶联物是否可能更早地用于治疗转移性三阴性乳腺癌。”

另外,同时在 TNBC 领域,除了 1 期研究之外还有一项与阿斯利康 PD-L1 单抗度伐利尤单抗(durvalumab)联合疗法 1b/2 期临床在进行中,后续有望启动 TNBC 的 3 期临床。

新知达人, 阿斯利康/第一三共 HER2 ADC 又一项突破!HER2 低表达乳腺癌 III 期临床成功

参考资料:

1. TROPION-Breast02 phase 3 trial of datopotamab deruxtecan initiated in patients with previously untreated metastatic triple negative breast cancer. News release. Daiichi Sankyo. June 13, 2022. Accessed June 14, 2022. https://bit.ly/39tRCGT

2. Krop I, Juric D, Shimizu T, et al. Datopotamab deruxtecan (Dato-DXd) in advanced/metastatic HER2 negative breast cancer: triple negative breast cancer results from the phase 1 TROPION-PanTumor01 study. Presented at: 2021 San Antonio Breast Cancer Symposium; December 7-10, 2021; San Antonio, TX. Abstract GS1-05.

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    2022-08-29 xlysu
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    2022-08-27 病毒猎手

    应该厉害!

    0

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