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Clin Cancer Res:Pyrotinib(吡咯替尼)治疗HER2+伴有脑转移乳腺癌患者的疗效:真实世界多中心研究

2021-06-10 yd2015 MedSci原创

Pyrotinib(吡咯替尼)是HER2+伴有脑转移乳腺癌患者可选择策略;其联合手术或放疗可改善患者的OS。肿瘤突变负荷(TMB)可能是吡咯替尼治疗的疗效预测指标。

人类表皮生长因子受体2 (HER2)阳性乳腺癌患者大约占15-20%,并且预后较差。II期临床研究证明Pyrotinib(吡咯替尼)联合卡培他滨较拉帕替尼联合卡培他滨具有更高的客观缓解率(ORR),并且改善无进展生存期。PHENIX研究表明在女性HER2阳性转移性乳腺癌患者中,Pyrotinib(吡咯替尼)联合卡培他滨较卡培他滨单药治疗延长中位无进展生存期近7.0个月(11.1个月vs. 4.1个月,p=0.001),提高ORR (68.6% vs 16.0%,P=0.001)。PHOEBE 研究同样证明Pyrotinib(吡咯替尼)联合卡培他滨较拉帕替尼联合卡培他滨改善HER2+转移性乳腺癌患者的PFS。同样,吡咯替尼可改善HER2+伴有脑转移(BM)乳腺癌患者的PFS。但是,吡咯替尼对HER2+伴有脑转移乳腺癌患者的总生存期(OS)的影响尚不清楚。因此,来自我国湖南的研究团队开展了一项真实世界研究,评估吡咯替尼对HER2+伴有脑转移乳腺癌患者OS的影响。研究成果发表在Clin Cancer Res杂志上。

该研究是一项真实世界研究,评估Pyrotinib(吡咯替尼)治疗HER2+伴有脑转移(BM)乳腺癌患者的OS,PFS,肿瘤突变负荷(TMB),临床获益率(CBR)和客观缓解率(ORR)。研究共纳入168例患者,其中吡咯替尼治疗前伴有脑转移(BM)有39例患者,129例患者没有伴有BM。39例脑转移患者分为吡咯替尼联合手术或放疗(S/R)有17例患者,没有手术或放疗(NS/NR)有22例患者。

整体人群,中位随访时间为18.5个月,中位PFS为8.00个月(7.3–10.53),中位OS为19.07个月 (15.13–22.87)。伴有或不伴有BM的患者的PFS没有明显统计学差异(8.67个月 95% CI: 6.43–11.87 vs. 8.00个月 95% CI: 7.07–12.2, P = 0.16),OS有统计学差异(13.93个月 95% CI: 10.53–20.67 vs. 20.93个月 95% CI: 17.13–25.13 months, P = 0.01)。

         总体人群、伴有或不伴有脑转移的PFS和OS

BM患者中,S/R组和NS/NR组的PFS分别为9.97和7.73个月(p=0.19),再者,S/R组较NS/NR组明显改善OS,分别为20.67和12.43个月(p=0.021)。

            BM患者局部治疗对PFS和OS影响

研究评估肿瘤突变负荷(TMB)与临床获益关系,将患者分为高TMB和低TMB组。研究发现低TMB 患者较高TMB患者的PFS明显延长,为13.44个月[7.37–22.9]对比4.9个月[4.33–NA], P = 0.0072。同样,低TMB组患者较高TMB组患者明显延长OS,为22.87个月(95% CI 17.47–NA)对比8.2个月(95% CI 4.83–NA),P=0.0028。

           TMB与临床获益关系

伴有脑转移患者中,同样观察到高TMB跟PFS(P = 0.075)、OS(P = 0.032)呈现负相关。因此,高TMB可能是吡咯替尼治疗的预后指标。

综上,Pyrotinib(吡咯替尼)是HER2+伴有脑转移乳腺癌患者可选择策略;其联合手术或放疗可改善患者的OS。肿瘤突变负荷(TMB)可能是吡咯替尼治疗的疗效预测指标。

原始出处:

Munawar Anwar, Qitong Chen, Dengjie Ouyang, et al. Pyrotinib treatment in patients with HER2-positive metastatic breast cancer and brain metastasis: exploratory final analysis of real-world, multicenter data. Clin Cancer Res, June 10, 2021.DOI: 10.1158/1078-0432.CCR-21-0474.

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    2021-06-18 SR~young海东

    谈癌色变

    0

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  6. [GetPortalCommentsPageByObjectIdResponse(id=1904072, encodeId=b8a419040e238, content=<a href='/topic/show?id=7d454302945' target=_blank style='color:#2F92EE;'>#多中心#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=91, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=43029, encryptionId=7d454302945, topicName=多中心)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=02f5179, createdName=luoxiaog, createdTime=Fri Sep 03 02:20:29 CST 2021, time=2021-09-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2058265, encodeId=a6f0205826585, content=<a href='/topic/show?id=e1371492e06' target=_blank style='color:#2F92EE;'>#Pyrotinib#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14927, encryptionId=e1371492e06, topicName=Pyrotinib)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=30bd35, createdName=一叶知秋, createdTime=Thu Mar 10 04:20:29 CST 2022, time=2022-03-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1909516, encodeId=06291909516a8, content=<a href='/topic/show?id=16c6430324c' target=_blank style='color:#2F92EE;'>#多中心研究#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=97, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=43032, encryptionId=16c6430324c, topicName=多中心研究)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=85aa264, createdName=redcrab, createdTime=Sun Mar 13 00:20:29 CST 2022, time=2022-03-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=974743, encodeId=8cf09e474340, content=谈癌色变, beContent=null, objectType=article, channel=null, level=null, likeNumber=100, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210313/9df56058b3964a8cac82563f95f0389d/c1b478592e8e4463bef44d32712e98fd.jpg, createdBy=ea905324251, createdName=SR~young海东, createdTime=Fri Jun 18 22:09:10 CST 2021, time=2021-06-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1295312, encodeId=720912953121b, content=<a href='/topic/show?id=0425e2636b8' target=_blank style='color:#2F92EE;'>#真实世界#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=72636, encryptionId=0425e2636b8, topicName=真实世界)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=5b34252, createdName=chenshujs, createdTime=Sat Jun 12 14:20:29 CST 2021, time=2021-06-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1571264, encodeId=5a2715e1264db, content=<a href='/topic/show?id=f42823e48d7' target=_blank style='color:#2F92EE;'>#乳腺癌患者#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=71, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=23748, encryptionId=f42823e48d7, topicName=乳腺癌患者)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=37bc15724202, createdName=hanhaisha2013, createdTime=Sat Jun 12 14:20:29 CST 2021, time=2021-06-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=972750, encodeId=2bb29e27508c, content=Pyrotinib(吡咯替尼)是HER2+伴有脑转移乳腺癌患者可选择策略;其联合手术或放疗可改善患者的OS。肿瘤突变负荷(TMB)可能是吡咯替尼治疗的疗效预测指标。, beContent=null, objectType=article, channel=null, level=null, likeNumber=93, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20200529/3611e9bb629c4e5b81fbd8ce784b06cc/128487eae357460bb98f67d86230c218.jpg, createdBy=ab235268530, createdName=神盾医疗局局长Jack, createdTime=Fri Jun 11 08:37:40 CST 2021, time=2021-06-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1032957, encodeId=0abf103295ef8, content=谢谢梅斯提供这么好的信息,学到很多, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=内科新手, createdTime=Fri Jun 11 02:20:29 CST 2021, time=2021-06-11, status=1, ipAttribution=)]
  7. [GetPortalCommentsPageByObjectIdResponse(id=1904072, encodeId=b8a419040e238, content=<a href='/topic/show?id=7d454302945' target=_blank style='color:#2F92EE;'>#多中心#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=91, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=43029, encryptionId=7d454302945, topicName=多中心)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=02f5179, createdName=luoxiaog, createdTime=Fri Sep 03 02:20:29 CST 2021, time=2021-09-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2058265, encodeId=a6f0205826585, content=<a href='/topic/show?id=e1371492e06' target=_blank style='color:#2F92EE;'>#Pyrotinib#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14927, encryptionId=e1371492e06, topicName=Pyrotinib)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=30bd35, createdName=一叶知秋, createdTime=Thu Mar 10 04:20:29 CST 2022, time=2022-03-10, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1909516, encodeId=06291909516a8, content=<a href='/topic/show?id=16c6430324c' target=_blank style='color:#2F92EE;'>#多中心研究#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=97, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=43032, encryptionId=16c6430324c, topicName=多中心研究)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=85aa264, createdName=redcrab, createdTime=Sun Mar 13 00:20:29 CST 2022, time=2022-03-13, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=974743, encodeId=8cf09e474340, content=谈癌色变, beContent=null, objectType=article, channel=null, level=null, likeNumber=100, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20210313/9df56058b3964a8cac82563f95f0389d/c1b478592e8e4463bef44d32712e98fd.jpg, createdBy=ea905324251, createdName=SR~young海东, createdTime=Fri Jun 18 22:09:10 CST 2021, time=2021-06-18, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1295312, encodeId=720912953121b, content=<a href='/topic/show?id=0425e2636b8' target=_blank style='color:#2F92EE;'>#真实世界#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=73, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=72636, encryptionId=0425e2636b8, topicName=真实世界)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=5b34252, createdName=chenshujs, createdTime=Sat Jun 12 14:20:29 CST 2021, time=2021-06-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1571264, encodeId=5a2715e1264db, content=<a href='/topic/show?id=f42823e48d7' target=_blank style='color:#2F92EE;'>#乳腺癌患者#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=71, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=23748, encryptionId=f42823e48d7, topicName=乳腺癌患者)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=37bc15724202, createdName=hanhaisha2013, createdTime=Sat Jun 12 14:20:29 CST 2021, time=2021-06-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=972750, encodeId=2bb29e27508c, content=Pyrotinib(吡咯替尼)是HER2+伴有脑转移乳腺癌患者可选择策略;其联合手术或放疗可改善患者的OS。肿瘤突变负荷(TMB)可能是吡咯替尼治疗的疗效预测指标。, beContent=null, objectType=article, channel=null, level=null, likeNumber=93, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://img.medsci.cn/20200529/3611e9bb629c4e5b81fbd8ce784b06cc/128487eae357460bb98f67d86230c218.jpg, createdBy=ab235268530, createdName=神盾医疗局局长Jack, createdTime=Fri Jun 11 08:37:40 CST 2021, time=2021-06-11, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1032957, encodeId=0abf103295ef8, content=谢谢梅斯提供这么好的信息,学到很多, beContent=null, objectType=article, channel=null, level=null, likeNumber=80, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f0620, createdName=内科新手, createdTime=Fri Jun 11 02:20:29 CST 2021, time=2021-06-11, status=1, ipAttribution=)]
    2021-06-11 神盾医疗局局长Jack

    Pyrotinib(吡咯替尼)是HER2+伴有脑转移乳腺癌患者可选择策略;其联合手术或放疗可改善患者的OS。肿瘤突变负荷(TMB)可能是吡咯替尼治疗的疗效预测指标。

    0

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    2021-06-11 内科新手

    谢谢梅斯提供这么好的信息,学到很多

    0

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