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JAMA:乳腺癌的ERBB2 (HER2) 检测病例问答,来试试?

2016-03-28 MedSci MedSci原创

女性,35岁,因左侧乳房肿块就诊于社区医院。乳房射线提示2个孤立的包块:3点钟方向1.4cm,距乳头10cm;乳房外侧一个1.3cm的肿块,距乳头4cm。腋窝超声提示淋巴结肿大,细针穿刺细胞学为恶性细胞。图像引导的两个肿块粗针活检提示低分化浸润性导管腺癌。雌激素受体(ER)在95%的肿瘤细胞显示强阳性,孕激素受体(PR)在不到5%的肿瘤细胞为阳性,免疫组化(IHC)示人类表皮生长因子受体2(ERB

女性,35岁,因左侧乳房肿块就诊于社区医院。

乳房射线提示2个孤立的包块:3点钟方向1.4cm,距乳头10cm;乳房外侧一个1.3cm的肿块,距乳头4cm。腋窝超声提示淋巴结肿大,细针穿刺细胞学为恶性细胞。图像引导的两个肿块粗针活检提示低分化浸润性导管腺癌。雌激素受体(ER)95%强阳性,孕激素受体(PR)5%阳性,免疫组化(IHC)示人类表皮生长因子受体2(ERBB2(HER2))为1+。(如表)



来自美国临床肿瘤协会和美国病理学家协会指南

你怎么理解这些检测结果?

A、患者是ERBB2 (HER2)阴性乳腺癌
B、患者是ERBB2 (HER2)阳性乳腺癌
C、结果可疑,需重新检测
D、结果的组织病理学不一致


答案:D

ERBB2(HER2)(第二个发现的人类表皮生长因子受体)是所有诊断为乳腺癌患者的最重要参数之一。在17号染色体上HER2基因发生扩增和或/在15%-20%的原位乳腺癌患者上有HER2蛋白过度表达。这导致细胞增殖,促进血管再生,提高了细胞生存路径,从而增加了肿瘤生物学的侵袭性,导致更差的预后。ERBB2(HER2)检测可以识别出能从ERBB2(HER2)靶向治疗(如曲妥珠单抗和帕妥珠单抗)受益更多的患者,抑制ERBB2(HER2)驱动细胞机制,显著改善生存率。组织病理学的不一致性出现在当低级别分化良好的肿瘤表现出ERBB2(HER2)阳性或组织学上高级别分化不良的肿瘤有ERBB2(HER2)阴性结果时。

适用于ERBB2(HER2)检测的定义

1.可疑结果

根据ASCO/CAP指南的IHC或ISH结果既不是阳性也不是阴性。此时应重复检测(IHC或ISH)。

2.组织病理学不一致

结果显示高级别肿瘤ERBB2(HER2)阴性,或特殊类型(如纯粘液性或筛状癌)的低级别肿瘤ERBB2(HER2)阳性。

3.瘤内非均质性结果

在同一个肿瘤不同区域出现ERBB2(HER2)阳性和阴性结果。与粗针穿刺不同,这可见于手术切除的有形态学区别的肿块。

治疗

这个病人的肿瘤是低分化的,但ERBB2(HER2)阴性,暗示了组织病理学的不一致性。考虑到她肿块的多发,进行了改良乳腺切除术,切除样本使用ISH进行了ERBB2(HER2)检测。结果显示ERBB2(HER2)/CEP17比例为4.6,20个细胞中有267个ERBB2(HER2)信号,阳性结果,使她具有了使用曲妥珠单抗和帕妥珠单抗靶向治疗的资格。

可选择的诊断测试方法?

IHC和ISH是目前许可的评估原位乳腺癌ERBB2(HER2)状态的唯一方法。

病人的结局

最后手术确定为多灶性浸润性导管癌,累及5/14个腋窝淋巴结。接受了6个周期的多烯紫杉醇,卡铂,曲妥珠单抗,和帕妥珠单抗辅助治疗,之后进行了3个月的曲珠单抗完成1年的治疗目标。伴随化疗进行了激素辅助疗法和局部放疗。诊断后1年的临床评价显示无复发迹象。

临床要点

1.ERBB2(HER2)检测可识别具有侵袭性的和预后较差的肿瘤,但这些病人可从靶向治疗中显著获益并极大的提高生存。

2.无单一标准检测肿瘤组织的ERBB2(HER2)状态,但目前支持的两种检测方法是IHC和ISH。

3.但初次检查结果可疑时,应重复检测使用IHC或ISH。

4.IHC用于检测细胞表面蛋白质表达,ISH用于检测基因扩增。

5.ERBB2(HER2)检测结果应联合组织病理学和技术一起解释。

原始出处:

Talal Hilal, MD1; Edward H. Romond, MD2 ERBB2 (HER2) Testing in Breast Cancer
JAMA. 2016;315(12):1280-1281. doi:10.1001/jama.2015.17463.


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  2. [GetPortalCommentsPageByObjectIdResponse(id=1662178, encodeId=fcbc16621e8f2, content=<a href='/topic/show?id=a9556923d7' target=_blank style='color:#2F92EE;'>#ErbB2#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=88, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6923, encryptionId=a9556923d7, topicName=ErbB2)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=612025370618, createdName=ms7514935887898259, createdTime=Fri May 27 15:03:00 CST 2016, time=2016-05-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=105826, encodeId=61de10582679, content=这篇资讯带给我们新知识,启发新思维,不论是科研还是临床工作都有很大的帮助。。。, beContent=null, objectType=article, channel=null, level=null, likeNumber=107, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzUn81b5CF5ibVPib8jWI92iciaxmqGHlwruOnK4SVZykd4iahqo1hicklIibyZoxm55X7EM8BW9eX1h1hQ2/0, createdBy=8aa81937526, createdName=李东泽, createdTime=Sat Aug 27 21:57:00 CST 2016, time=2016-08-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=105624, encodeId=7fb31056240e, content=这篇资讯带给我们新知识,启发新思维,不论是科研还是临床工作都有很大的帮助。。。, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzUn81b5CF5ibVPib8jWI92iciaxmqGHlwruOnK4SVZykd4iahqo1hicklIibyZoxm55X7EM8BW9eX1h1hQ2/0, createdBy=8aa81937526, createdName=李东泽, createdTime=Sat Aug 27 14:30:00 CST 2016, time=2016-08-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=95579, encodeId=23f3955e982, content=非常好!, beContent=null, objectType=article, channel=null, level=null, likeNumber=100, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=93f31631454, createdName=1dd8c52fm63(暂无匿称), createdTime=Tue Aug 02 22:12:00 CST 2016, time=2016-08-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=74410, encodeId=ce53e441066, content=值得学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=149, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7cde98330, createdName=milkshark, createdTime=Tue Mar 29 06:57:00 CST 2016, time=2016-03-29, status=1, ipAttribution=)]
    2016-08-27 李东泽

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  3. [GetPortalCommentsPageByObjectIdResponse(id=1662178, encodeId=fcbc16621e8f2, content=<a href='/topic/show?id=a9556923d7' target=_blank style='color:#2F92EE;'>#ErbB2#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=88, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=6923, encryptionId=a9556923d7, topicName=ErbB2)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=612025370618, createdName=ms7514935887898259, createdTime=Fri May 27 15:03:00 CST 2016, time=2016-05-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=105826, encodeId=61de10582679, content=这篇资讯带给我们新知识,启发新思维,不论是科研还是临床工作都有很大的帮助。。。, beContent=null, objectType=article, channel=null, level=null, likeNumber=107, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzUn81b5CF5ibVPib8jWI92iciaxmqGHlwruOnK4SVZykd4iahqo1hicklIibyZoxm55X7EM8BW9eX1h1hQ2/0, createdBy=8aa81937526, createdName=李东泽, createdTime=Sat Aug 27 21:57:00 CST 2016, time=2016-08-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=105624, encodeId=7fb31056240e, content=这篇资讯带给我们新知识,启发新思维,不论是科研还是临床工作都有很大的帮助。。。, beContent=null, objectType=article, channel=null, level=null, likeNumber=86, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzUn81b5CF5ibVPib8jWI92iciaxmqGHlwruOnK4SVZykd4iahqo1hicklIibyZoxm55X7EM8BW9eX1h1hQ2/0, createdBy=8aa81937526, createdName=李东泽, createdTime=Sat Aug 27 14:30:00 CST 2016, time=2016-08-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=95579, encodeId=23f3955e982, content=非常好!, beContent=null, objectType=article, channel=null, level=null, likeNumber=100, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=93f31631454, createdName=1dd8c52fm63(暂无匿称), createdTime=Tue Aug 02 22:12:00 CST 2016, time=2016-08-02, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=74410, encodeId=ce53e441066, content=值得学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=149, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=7cde98330, createdName=milkshark, createdTime=Tue Mar 29 06:57:00 CST 2016, time=2016-03-29, status=1, ipAttribution=)]
    2016-08-27 李东泽

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    2016-08-02 1dd8c52fm63(暂无匿称)

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    2016-03-29 milkshark

    值得学习

    0

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来自第二军医大学的研究人员成功研发出了一种新型双特异性抗体,证实它可以通过全面阻断ErbB2异源二聚化来克服曲妥珠单抗(trastuzumab)耐药。研究结果发表在9月17日的《癌症研究》(Cancer Research)杂志上。【原文下载】 论文的通讯作者是第二军医大学肿瘤研究所所长、国家973计划首席科学家郭亚军(Yajun Guo)教授。其主要研究方向为抗体制药工程,包括新靶点发现、抗体人

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