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Clin Cancer Res:MONALEESA-7研究更新结果表明瑞博西尼(Ribociclib)联合内分泌治疗较内分泌单药持续改善HR+/HER2- 晚期乳腺癌患者的预后

2022-01-06 yd2015 MedSci原创

MONALEESA-7研究更新结果表明瑞博西尼(Ribociclib)联合内分泌治疗较内分泌单药持续改善HR+/HER2- 晚期乳腺癌患者的预后。

III期随机临床研究MONALEESA-7初始结果表明,在激素受体(HR)阳性、人表皮生长因子受体2 (HER2)阴性的晚期乳腺癌(ABC)患者中,Ribociclib +内分泌治疗(ET)较ET单药显著改善患者的无进展生存期和总生存期(OS)。近期,MONALEESA-7研究更新结果发表在Clin Cancer Res杂志上。

2014年12月17日至2016年8月1日,335名和337名患者被随机分配到ribociclib和安慰剂组。中位随访时间为53.5个月。在数据截止时,接受ribociclib治疗的141名患者(42%)和接受安慰剂治疗的167名患者(50%)死亡。Ribociclib组和安慰剂组的中位OS分别为58.7个月和48.0个月(HR, 0.76;95% CI, 0.61-0.96)。4年生存率为60% vs 50%,54个月生存率为53% vs 44%。

                  总体人群两治疗组的OS差异

在接受NSAI治疗的患者中,ribociclib组248例患者中有107例(43%)死亡,安慰剂组247例患者中有120例(49%)死亡。ribociclib组和安慰剂组的中位OS分别为58.7个月和47.7个月(HR, 0.80;95%CI,0.62-1.04)。

            接受NSAI治疗两治疗组的OS差异

在接受他莫西芬治疗的患者中,ribociclib组87例患者中有34例(39%)死亡,安慰剂组90例患者中有47例(52%)死亡。Ribociclib和安慰剂组的中位OS尚未达到和49.3个月(HR, 0.71;95%CI,0.45-1.10)。

            接受他莫昔芬治疗两治疗组的OS差异

                  亚组分析

进展后接受后续抗肿瘤治疗的比例类似:在ribociclib组有204名患者(77%),在安慰剂组有239名患者(78%)。最常见的后续治疗是单独化疗(ribociclib, 22%;安慰剂,28%)和单独激素治疗(ribociclib, 28%;安慰剂,18%)。进展后最常见的第一次后续化疗是卡培他滨(ribociclib, 40%;安慰剂,41%)和紫杉醇(各28%)。在研究治疗停止后,ribociclib组(13%)使用CDK4/6抑制剂的比例较安慰剂(26%)更低。

 

在本研究的治疗方案完成后,ribociclib组的144名患者(43%)和安慰剂组的173名患者(51%)接受化疗作为后续治疗。Ribociclib和安慰剂的首次化疗的中位时间分别为50.9个月和36.8个月(HR, 0.69;95% CI, 0.56-0.87)。中位无化疗生存期为42.4个月,安慰剂为26.4个月(HR, 0.67;95% CI, 0.55-0.81)。

               

      TTC, time to chemotherapy 和CFS, chemotherapy-free survival

总的来说,接受ribociclib和安慰剂治疗分别有177例(53%)和221例(66%)患者在接受后续治疗时出现了疾病进展或死于任何原因。中位PFS2在ribociclib组和安慰剂组中分别为44.2个月和31.0个月 (HR, 0.68; 95% CI, 0.56-0.83) ;在亚组分析中,PFS2获益总体上是一致的。

                   PFS2

特别关注的3或4级不良事件是中性粒细胞减少(ribociclib, 65%;安慰剂,6%),肝胆毒性(ribociclib, 12%;安慰剂,7%),QT间期延长(ribociclib, 2%;安慰剂,1%)。

综上,MONALEESA-7研究更新结果表明瑞博西尼(Ribociclib)联合内分泌治疗较内分泌单药持续改善HR+/HER2- 晚期乳腺癌患者的预后。

原始出处:

Lu YS, Im SA, Colleoni M, et al. Updated Overall Survival of Ribociclib Plus Endocrine Therapy vs Endocrine Therapy Alone in Pre- and Perimenopausal Patients With HR+/HER2- Advanced Breast Cancer in MONALEESA-7: A Phase III Randomized Clinical Trial. Clin Cancer Res. 2021 Dec 29:clincanres.3032.2021. doi: 10.1158/1078-0432.CCR-21-3032. Epub ahead of print. PMID: 34965945.

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    2022-09-08 luwei00
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    2022-04-10 gwc392
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