Clin Cancer Res:PET能用于预测晚期胃癌患者的化疗反应

2015-12-02 王英 生物通

最近,国际癌症研究领域著名期刊《Clinical Cancer Research》在线发表了复旦大学的一项最新研究成果。这项研究评估了通过正电子发射断层扫描(PET)评估早期代谢变化,用以预测晚期胃癌患者的化疗反应的可行性,并调查了其在患者中的预后意义。 本研究通讯作者为复旦大学附属肿瘤医院的李进教授,其1982年毕业于东南大学医学院,分别于1989年和1997年在第二军医大学获得肿瘤学硕士

最近,国际癌症研究领域著名期刊《Clinical Cancer Research》在线发表了复旦大学的一项最新研究成果。这项研究评估了通过正电子发射断层扫描(PET)评估早期代谢变化,用以预测晚期胃癌患者的化疗反应的可行性,并调查了其在患者中的预后意义。

本研究通讯作者为复旦大学附属肿瘤医院的李进教授,其1982年毕业于东南大学医学院,分别于1989年和1997年在第二军医大学获得肿瘤学硕士和内科学博士学位。2000年4月至2002年8月赴美国耶鲁大学医学院,师从美国两院院士Alan Garen教授进行博士后研究。2001年至今主要从事肿瘤免疫治疗以及分子靶向药物的临床试验研究。研究成果发表在PNAS、European Journal of Cancer、Journal of Clinical Oncology等杂志。现任复旦大学附属肿瘤医院肿瘤内科主任,复旦大学肿瘤医院生物治疗研究中心主任,复旦大学肿瘤医院临床药物研究机构负责人。今年9月份,李进教授因在临床肿瘤学领域上的突出贡献,获得了2015年CSCO临床肿瘤学年度成就奖。

作为最为最常见的恶性肿瘤,晚期胃癌(GC)的预后较差,总体生存期不到12个月。已经有研究确立了一线姑息化疗在晚期GC中的作用,特别是联合治疗方案。然而,来自于一系列大型临床试验中的无法切除的晚期GC中,一线化疗的客观有效率仍然徘徊在不理想的水平。即使加入靶向药物曲妥珠单抗,响应率仍然不超过50%。目前,还没有为二线治疗建立标准的方案,无进展生存期只有大约2到3个月。在一线治疗失败后,患者很容易快速进入终末期疾病阶段。对于转移性胃癌(mGC)患者来说,一线治疗的响应率和无进展生存期,是决定其最终预后的关键所在。

因此,重要的是要找出患者是否会在疗程早期响应一线治疗,以避免进一步使用无效的方案,引起不良反应和不必要的成本,并通过寻找最佳方案节省时间。更为重要的是,对于接受新辅助治疗或术前化疗的局部晚期胃癌患者来说,疗效的早期检测可避免失去根治性切除术的机会。

常规的放射技术,如计算机断层扫描(CT)和磁共振成像技术(MRI),已被广泛用来评估患者对化疗的反应。一般来说,患者在每两个周期的药物之后接受扫描,在6到8周的一个时间间隔。如果在治疗开始后能够早期发现一个反应标志物,那么就能确定哪些患者将不会受益于正在进行的治疗。

在转移性疾病的姑息性设置中——这是胃癌治疗的主要部分,PET扫描用于预测一线治疗反应的作用,仍然还很少探讨。

代谢示踪物18F-fluoro-3’-deoxy-3’-L-fluorothymidine (FLT),为肿瘤的增殖活性——是恶性肿瘤的一个重要特征,提供了非侵入性的评估。在某种程度上,在有/无FDG低摄取的GC中,FLT示踪物可作为一种补剂,从而提供了超过95%的高灵敏度。

目前,能够显示出FLT作为早期治疗反应及预后指标的潜在作用的数据有限,但是结果是令人鼓舞的。然而,在肝脏和骨髓中,相对较低的肿瘤FLT摄取和生理上较高的FLT摄取,限制了其在临床实践中的应用。FLT-PET在姑息治疗反应早期评估中的现状,仍有待于验证。

在这项前瞻性的研究中,研究人员证明,FDG-PET评估的早期代谢反应,可以预测接受一线化疗的晚期胃癌患者的临床反应,以及疾病控制状况,FLT-PET的代谢吸收变化,既不能预测治疗反应,也不能预测疾病控制。

FDG和FLT在基线和治疗开始后14天的摄取值,表现出对无进展生存期或总生存期没有预后影响。局部地,早期FDG摄取在肝转移中的变化,不仅可以预测化疗反应,而且可作为生存期的一个预后因素。

FDG摄取在原发性胃癌中的变化,也对预后产生显著的影响。然而,作者指出,这项单中心研究数据应该谨慎解释,因为患者数目相对较小。在将来,迫切需要就这一主题采取更大的试验。

原始出处:


Wang C, Guo W, Zhou M, Zhu X, Ji D, Li W, Liu X, Tao Z, Zhang XW, Zhang Y, Li J.The Predictive and Prognostic Value of Early Metabolic Response Assessed by Positron Emission Tomography in Advanced Gastric Cancer Treated with Chemotherapy. Clin Cancer Res. 2015 Nov 25. pii: clincanres.3235.2015.


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    2016-09-12 feather89
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  4. [GetPortalCommentsPageByObjectIdResponse(id=1973569, encodeId=7dde19e35694e, content=<a href='/topic/show?id=41b03354870' target=_blank style='color:#2F92EE;'>#化疗反应#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=110, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=33548, encryptionId=41b03354870, topicName=化疗反应)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=99cf2500102, createdName=zjshifan_98647306, createdTime=Sat Oct 22 00:18:00 CST 2016, time=2016-10-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1725953, encodeId=a2bc1e2595318, content=<a href='/topic/show?id=986913980dd' target=_blank style='color:#2F92EE;'>#PE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13980, encryptionId=986913980dd, topicName=PE)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f06c33759375, createdName=feather89, createdTime=Mon Sep 12 06:18:00 CST 2016, time=2016-09-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1769636, encodeId=29a31e696368e, content=<a href='/topic/show?id=900b8323461' target=_blank style='color:#2F92EE;'>#胃癌患者#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=83234, encryptionId=900b8323461, topicName=胃癌患者)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=377c38086944, createdName=huhuaidong400, createdTime=Fri Apr 15 05:18:00 CST 2016, time=2016-04-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=63315, encodeId=5ee063315ed, content=感兴趣这方面研究, beContent=null, objectType=article, channel=null, level=null, likeNumber=186, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=cbd11668261, createdName=小猫cathy, createdTime=Fri Feb 05 09:04:00 CST 2016, time=2016-02-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1276585, encodeId=1e8712e658596, content=<a href='/topic/show?id=59ed598e816' target=_blank style='color:#2F92EE;'>#晚期胃癌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=59878, encryptionId=59ed598e816, topicName=晚期胃癌)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=778d36, createdName=柳叶一刀, createdTime=Fri Dec 04 09:18:00 CST 2015, time=2015-12-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1331040, encodeId=2d2b13310405f, content=<a href='/topic/show?id=15e2140e438' target=_blank style='color:#2F92EE;'>#PET#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14074, encryptionId=15e2140e438, topicName=PET)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=智慧医人, createdTime=Fri Dec 04 09:18:00 CST 2015, time=2015-12-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=44624, encodeId=930044624cf, content=贵了, beContent=null, objectType=article, channel=null, level=null, likeNumber=185, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2d331664955, createdName=老段, createdTime=Thu Dec 03 21:37:00 CST 2015, time=2015-12-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=44517, encodeId=f8954451e28, content=太好,太好,太贵,太贵, beContent=null, objectType=article, channel=null, level=null, likeNumber=105, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTJXCR8W80NNgQuicJU3aIm3JtiaNAFLYSMlBuVfGkSlw5Z5VpmZK4PyiaDURLAorhvwhWVnaM1gQdJXA/132, createdBy=a01444383, createdName=lixh1719, createdTime=Thu Dec 03 11:16:00 CST 2015, time=2015-12-03, status=1, ipAttribution=)]
    2016-02-05 小猫cathy

    感兴趣这方面研究

    0

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    2015-12-04 智慧医人
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    2015-12-03 老段

    贵了

    0

  8. [GetPortalCommentsPageByObjectIdResponse(id=1973569, encodeId=7dde19e35694e, content=<a href='/topic/show?id=41b03354870' target=_blank style='color:#2F92EE;'>#化疗反应#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=110, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=33548, encryptionId=41b03354870, topicName=化疗反应)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=99cf2500102, createdName=zjshifan_98647306, createdTime=Sat Oct 22 00:18:00 CST 2016, time=2016-10-22, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1725953, encodeId=a2bc1e2595318, content=<a href='/topic/show?id=986913980dd' target=_blank style='color:#2F92EE;'>#PE#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=46, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13980, encryptionId=986913980dd, topicName=PE)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=f06c33759375, createdName=feather89, createdTime=Mon Sep 12 06:18:00 CST 2016, time=2016-09-12, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1769636, encodeId=29a31e696368e, content=<a href='/topic/show?id=900b8323461' target=_blank style='color:#2F92EE;'>#胃癌患者#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=83234, encryptionId=900b8323461, topicName=胃癌患者)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=377c38086944, createdName=huhuaidong400, createdTime=Fri Apr 15 05:18:00 CST 2016, time=2016-04-15, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=63315, encodeId=5ee063315ed, content=感兴趣这方面研究, beContent=null, objectType=article, channel=null, level=null, likeNumber=186, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=cbd11668261, createdName=小猫cathy, createdTime=Fri Feb 05 09:04:00 CST 2016, time=2016-02-05, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1276585, encodeId=1e8712e658596, content=<a href='/topic/show?id=59ed598e816' target=_blank style='color:#2F92EE;'>#晚期胃癌#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=45, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=59878, encryptionId=59ed598e816, topicName=晚期胃癌)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=778d36, createdName=柳叶一刀, createdTime=Fri Dec 04 09:18:00 CST 2015, time=2015-12-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1331040, encodeId=2d2b13310405f, content=<a href='/topic/show?id=15e2140e438' target=_blank style='color:#2F92EE;'>#PET#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=44, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=14074, encryptionId=15e2140e438, topicName=PET)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a12645, createdName=智慧医人, createdTime=Fri Dec 04 09:18:00 CST 2015, time=2015-12-04, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=44624, encodeId=930044624cf, content=贵了, beContent=null, objectType=article, channel=null, level=null, likeNumber=185, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=2d331664955, createdName=老段, createdTime=Thu Dec 03 21:37:00 CST 2015, time=2015-12-03, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=44517, encodeId=f8954451e28, content=太好,太好,太贵,太贵, beContent=null, objectType=article, channel=null, level=null, likeNumber=105, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://thirdwx.qlogo.cn/mmopen/vi_32/Q0j4TwGTfTJXCR8W80NNgQuicJU3aIm3JtiaNAFLYSMlBuVfGkSlw5Z5VpmZK4PyiaDURLAorhvwhWVnaM1gQdJXA/132, createdBy=a01444383, createdName=lixh1719, createdTime=Thu Dec 03 11:16:00 CST 2015, time=2015-12-03, status=1, ipAttribution=)]
    2015-12-03 lixh1719

    太好,太好,太贵,太贵

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