Nat Med:Dalpiciclib联合氟维司群治疗激素受体阳性和HER2阴性晚期乳腺癌疗效分析

2021-11-05 MedSci原创 MedSci原创

该研究的结果支持dalpiciclib联合氟维司群治疗可作为激素受体阳性、HER2阴性的晚期乳腺癌患者新的治疗选择。

在全球范围内,乳腺癌是最常被诊断出的癌症,也是女性癌症相关死亡的主要原因。激素受体阳性肿瘤是乳腺癌的主要亚型,占所有病例的75%以上。内分泌治疗是激素受体阳性乳腺癌治疗的基石;然而,几乎所有患者都会出现获得性耐药。其中,阻断细胞周期蛋白依赖性激酶4和6通路已被证实可有效治疗激素受体阳性的晚期乳腺癌,但其长期疗效如何尚未明确。

近日,顶级医学期刊Nature Medicine上发表了一篇研究文章,研究人员报告了DAWNA研究1(NCT03927456)的中期结果,DAWNA研究是针对dalpiciclib(一种新的细胞周期蛋白依赖性激酶4和6抑制剂)联合氟维司群治疗激素受体阳性、HER2阴性晚期乳腺癌的双盲、随机、3期试验。

该研究共有361名患者以2:1的比例随机接受dalpiciclib联合氟维司群或安慰剂联合氟维司群治疗。该研究如果达到了主要终点,则表明dalpiciclib联合氟维司群治疗与安慰剂联合氟维司群治疗相比,受试者的无进展生存期显著延长(中位数=15.7,95%置信区间(CI)=11.1-未出现 vs. 7.2,95%CI=5.6–9.2个月;风险比=0.42,95%CI=0.31–0.58;单侧P<0.0001(边界为P≤0.008))。

dalpiciclib联合氟维司群治疗最常见的3或4级不良事件为中性粒细胞减少症(84.2%)和白细胞减少症(62.1%)。dalpiciclib联合氟维司群治疗的严重不良事件发生率为5.8%,而安慰剂联合氟维司群治疗为6.7%。

由此可见,该研究的结果支持dalpiciclib联合氟维司群治疗可作为激素受体阳性、HER2阴性的晚期乳腺癌患者新的治疗选择。

原始出处:

Binghe Xu,et al.Dalpiciclib or placebo plus fulvestrant in hormone receptor-positive and HER2-negative advanced breast cancer: a randomized, phase 3 trial.Nature Medicine.2021.https://www.nature.com/articles/s41591-021-01562-9

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    2022-05-12 liye789132251
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    2022-08-28 jiekemin
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