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SABCS 2013:三阴性乳腺癌新辅助化疗获益

2013-12-27 MedSci MedSci原创

越来越多的三阴性乳腺癌患者在手术前接受新辅助化疗。大约有三分之一的患者,在新辅助化疗实施后,手术时乳腺组织中没有可识别的癌细胞并且淋巴结没有转移,也就是说这些患者出现病理完全缓解(pCR),并且与那些对新辅助化疗没有很好效果的患者相比癌症复发风险低的多。将化疗药物卡铂和/或者靶向治疗药贝伐珠单抗加入到标准术前化疗中,会使手术过程没有残留癌的三阴性乳腺癌患者的数量增加,这是公布在2013年圣安东尼奥

越来越多的三阴性乳腺癌患者在手术前接受新辅助化疗。大约有三分之一的患者,在新辅助化疗实施后,手术时乳腺组织中没有可识别的癌细胞并且淋巴结没有转移,也就是说这些患者出现病理完全缓解(pCR),并且与那些对新辅助化疗没有很好效果的患者相比癌症复发风险低的多。

将化疗药物卡铂和/或者靶向治疗药贝伐珠单抗加入到标准术前化疗中,会使手术过程没有残留癌的三阴性乳腺癌患者的数量增加,这是公布在2013年圣安东尼奥乳癌研讨会上一项随机的,II期临床试验结果。

“我们研究的目的是确定增加卡铂或者贝伐珠单抗到标准术前化疗是否会增加手术前癌消除患者比例,很高兴的向大家报告,无论加入哪一种治疗都会显著地提高乳腺中癌消除患者的比例,并且这两种治疗的添加会更有效。”

“虽然我们的结果表明使用卡铂和贝伐珠单抗会增加病理完全缓解率,但我们还不知道影响到底有多大,如果有的话,这些差异将会表现在癌症复发或死亡方面。尽管这 项研究不足以大到可以检测这些终点的显著差异,我们计划在手术后随访患者10年去观察患者治疗效果显示的来自研究性治疗长期受益情况。”


布朗大学 Warren Alpert医学院的William M.Sikov教授根据这项随机的,II期临床试验研究发表了上述的观点。

该项研究是由Cancer and Leukemia Group B指导的,它是目前Alliance for Clinical Trials in Oncology的一部分,被称为CALGB/Alliance 40603。

Sikov和他的同事们在这项随机的,II期临床试验中,治疗了443例可手术的、2级或者3级三阴性乳腺癌患者。患者被随机分为标准新辅助化疗,标准新辅助化疗+卡铂,标准新辅助化疗+贝伐珠单抗和标准新辅助化疗+卡铂+贝伐珠单抗四组。手术治疗是在新辅助治疗完成四到八周后进行。

研究人员发现, 被随机分配到新辅助化疗组的108名患者中,手术时,乳腺肿瘤清除的比例是42%,乳腺和淋巴结都清除的比例是39%;对于随机分配到新辅助化疗+贝伐珠 单抗组中110名患者来说,这些比例分别提高到了50%和43%;随机分配到新辅助化疗+卡铂的113名患者,比例分别为53%和49%;随机分配到新辅 助化疗+卡铂+贝伐珠单抗组的112名患者,分别为67%和60%。

在随机分配到新辅助化疗+卡铂组的患者中,观察到乳腺以及乳腺和淋巴结的病理完全缓解率增加均具有统计学显著。而随机分配到新辅助化疗+贝伐珠单抗的患者中,只有乳腺的病例完全缓解率增加满足研究标准的显著性。

使用卡铂治疗对比没有接受卡铂的患者,会有更多关于血细胞计数降低的问题,并且有可能错过化疗、推迟化疗给药或者化疗药物剂量减少。另外,大约10%接受贝伐珠单抗治疗的患者会出现高血压,并且这些患者中更多的会出现血块、出血和感染的问题。

该项II期临床试验研究的只要内容请参看下文:

结果:454名患者参加此次研究,中位年龄是48岁,2级68%/3级32%。354名患者提供了治疗数据,59名患者没有完成新辅助化疗,20名患者由于不良反应退出试验。


通常由贝伐珠单抗引起与贝伐珠单抗无关的不良反应比例为11.5%和3.5%。随机分配的患者中使用贝伐珠单抗而终止治疗占23%,使用其它药物终止治疗的比例是6-13%。使用卡铂对比不用卡铂更常见3-4级中性粒细胞减少症和血小板减少症比例为56% vs 20%和22% vs 4%,而使用贝伐珠单抗对比不使用贝伐珠单抗引起高血压的比例为11% vs <1%。患者接受卡铂和贝伐珠单抗两种药物易见发热性中性粒细胞减少症,对比其他药物分别为19%和<7%。

在最初396例患者未经审核的结果中,没有证据表明卡铂和贝伐珠单抗的效果之间有相互作用,P(乳腺)=0.64和P(乳腺/腋窝)P=0.44。

结论:初步结果表明,卡铂或者贝伐珠单抗加入标准新辅助化疗中会增加II到III级三阴性乳腺癌患者的pCR率。接受这两种添加患者的pCR(乳腺)为60.6%,pCR(乳腺/腋窝)为50%。患者将会被随访RFS/OS以评估pCR在这些点的影响。

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    2013-12-29 xlysu
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SABCS:乳腺癌内分泌治疗的3项重磅研究

       作者:军事医学科学院附属医院乳腺肿瘤科 王涛        在今年美国圣安东尼奥乳腺癌会议(SABCS)举办的首日,继开篇大会报告——《激素与乳腺癌》之后,乳腺癌内分泌治疗专场上演。本专场重点公布了3项临床研究的结果,特别是ATLAS研

SABCS 2013:聚焦乳腺癌辅助治疗进展

一、在会上,将有大量的关于乳腺癌辅助治疗的研究得到展示。其中最令人期待的一个研究是BETH试验,该试验是一个大型的随机试验,在标准化疗联合曲妥珠单抗方案中增加贝伐单抗来治疗HER2阳性乳腺癌。从BETH试验中,我们将发现该方案能否提高患者的无进展生存期和总生存期。二、我们将听到一些非常有趣的关于肿瘤浸润淋巴细胞的数据,这也是乳腺癌领域中相对较新的内容。长久以来,我们已经知道乳腺癌在显微镜下偶尔会出

SABCS:乳腺癌预后指标的意外之喜—维生素D

       在第35届圣安东尼奥乳腺癌会议(SABCS)上发布的研究生物标志物的AZURE试验的初步结果显示:在标准治疗基础上联合使用唑来膦酸的乳腺癌患者,如果体内维他命水平不足,其预后劣于维他命D处于正常水平的患者。该研究的作者是英国谢菲尔德大学的Robert Coleman医学博士,他指出:“乳腺癌女性患者体内维生素D水平正常时往往显示较好的预后。我们

SABCS:他汀类药物或可改善炎性乳腺癌PFS

       一项大规模的回顾性研究显示:有他汀类药物服用史的炎性乳腺癌患者的肿瘤生长更为缓慢。        在第35届圣安东尼奥乳腺癌论坛(SABCS)上,来自美国德克萨斯大学MD安德森癌症中心的Naoto Ueno博士表示:他汀类药物的使用可显著改善炎性乳腺癌患者的无进展生存期(PFS),分析不同类型的

SABCS 2013:聚焦乳腺癌领域的热点与进展

医学教授、放射肿瘤学副教授,美国杜克大学乳腺癌组主任,总结评论了以下发表在今年的圣安东尼奥乳癌研讨会(SABCS)上的部分重点摘要内容。S1-01. 应用拉帕替尼、曲妥珠单抗或二者联合治疗HER2阳性乳腺癌患者,其无病生存期和病理完全缓解之间的联系。NeoALTTO试验 (BIG 1-06)的生存随访分析。评论:NeoALTTO试验将是今年圣安东尼奥乳腺癌大会上最重要的研究。我

SABCS 2013:转移性乳腺癌靶向治疗新方法

据了解,乳腺癌是由不同的亚型组成。按照基因表达的不同,我们可以将乳腺癌分为激素受体阳性的luminal A型和luminalB型;HER2阳性(包括HER2过表达,表面蛋白增加以及HER2基因扩增);激素受体和HER2都不表达的三阴型。目前,我们可以将乳腺癌分成不同的亚型,并针对每一组开展靶向治疗。最成功的领域已经得到丰富的数据结果,其中包括对激素受体阳性亚型和HER2阳性亚型。我们已经可以观察到

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