Lancet:早期HER2阳性乳腺癌患者可采用6个月曲妥珠单抗治疗方案

2019-06-28 MedSci MedSci原创

研究认为,对于早期HER2阳性乳腺癌患者,6个月的曲妥珠单抗治疗对患者的疗效不低于12个月的治疗,并且降低了心脏毒性和严重不良事件风险

曲妥单抗可显著改善HER 2阳性早期乳腺癌患者的预后。标准治疗时间为12个月,但较短的治疗时间可提供类似的疗效,同时降低毒性和成本。近日研究人员考察了6个月曲妥珠单抗治疗对患者无病生存的影响。

成年,有明确化疗指征的HER2阳性早期乳腺癌患者随机接受6个月或12个月的曲妥珠单抗,每3周静脉注射一次(负荷量为8mg/kg,随后维持剂量为6 mg/kg)。研究的主要终点是无病生存率,4年无病生存率的非劣效边界为3%。

2045名患者接受了12个月的曲妥珠单抗治疗,2044人接受6个月的治疗。两个治疗组的中位随访时间均为5.4年,其中6个月组2043名患者中有265名(13%)无病生存,12个月组2045名患者中有247名(12%)无病生存。6个月组4年无病生存率为89.4%,12个月组为89.8%(风险比1.07),达到非劣效性。6个月的曲妥珠单抗治疗导致报告严重不良事件的患者减少(1939例患者中373例(19%)vs 1894例患者中459例(24%)),因心脏毒性而提前停药(1939例患者中61例(3%)vs 1894例患者中146例(8%))风险降低。

研究认为,对于早期HER2阳性乳腺癌患者,6个月的曲妥珠单抗治疗对患者的疗效不低于12个月的治疗,并且降低了心脏毒性和严重不良事件风险。

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