LANCET:使用曲妥珠单抗治疗HER2阳性早期乳腺癌患者维持多久疗效更佳?

2017-02-23 MedSci MedSci原创

临床试验显示曲妥珠单抗是针对HER2受体的重组单克隆抗体,它可以显着改善HER2阳性早期乳腺癌换着的总生存期和无病生存期,但尚需长期的随访数据进一步证实。近期,一项发表在权威杂志LANCET上的文章报告了在HERA试验中患者经过中位随访11年后,观察比较了两种使用曲妥珠单抗治疗的持续时间的结果。HERA(BIG 1-01)是一项关于5102名HER2阳性早期乳腺癌换着的国际多中心,开放标签,3期随

临床试验显示曲妥珠单抗是针对HER2受体的重组单克隆抗体,它可以显着改善HER2阳性早期乳腺癌换着的总生存期和无病生存期,但尚需长期的随访数据进一步证实。


近期,一项发表在权威杂志LANCET上的文章报告了在HERA试验中患者经过中位随访11年后,观察比较了两种使用曲妥珠单抗治疗的持续时间的结果。

HERA(BIG 1-01)是一项关于5102名HER2阳性早期乳腺癌换着的国际多中心,开放标签,3期随机试验,患者均于2001年12月7日至2010年6月20日在39个国家的医院就诊。所有治疗(包括手术、化疗和放射治疗)完成后,将患者随机分配(1:1:1)为接受曲妥单抗1年(静脉一次予以8mg / kg,然后每3周一次6mg / kg)或2年(相同剂量方案)或观察组。主要终点是无病生存。使用Cox模型估计危险比(HR),并通过Kaplan-Meier方法估计存活曲线。曲妥珠单抗的2年和1年的比较基于366天的分析。本研究在ClinicalTrials.gov(NCT00045032)中注册。

此项研究结果显示:在HERA试验中,随机分配的5102名妇女中,3名患者没有提供书面知情同意书。研究者们跟踪了5099名患者的意向治疗人群(观察1697名,1年曲妥珠单抗治疗组1702名,2年曲妥珠单抗治疗组1700名)。在中位随访11年后(IQR 10.09-11.53),与观察者相比,1年的曲妥珠单抗治疗显着降低无病生存事件的风险(HR 0.76,95%CI 0.68 -0.86)和死亡(0.74,0.64-0.86)。与1年的治疗相比,2年的辅助曲妥珠单抗不能改善这种药物的无病生存结果(HR 1.02,95%CI 0.89-1.17)。

10年无病生存在观察组约为63%,1年曲妥珠单抗治疗组约为69%,2年曲妥珠单抗治疗组约为69%。 884(52%)名分配到观察组的患者选择性跨越接受曲妥珠单抗。

所有试验组患者的心脏毒性较低,主要发生在治疗期。在2年曲妥珠单抗治疗组中,继发性心脏终点的发生122例(7.3%),1年曲妥珠单抗治疗组为74例(4.4%),观察组为15例(0.9%)。

此项研究表明:与观察组相比,1年的曲妥珠单抗联合化疗后可以显著改善HER2阳性的早期乳腺癌患者的长期无病生存。而2年的曲妥珠单抗治疗并没有额外的益处。

原始出处:

Cameron D, Piccart-Gebhart MJ, Gelber RD, et al. 11 years' follow-up of trastuzumab after adjuvant chemotherapy in HER2-positive early breast cancer: final analysis of the HERceptin Adjuvant (HERA) trial.  Lancet. 2017 Feb 16. pii: S0140-6736(16)32616-2.

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    2017-03-09 howi
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    2017-02-25 ylzr123

    好文,值得点赞,更值得收藏!慢慢领会学习的。

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