GUT:霍奇金淋巴瘤治疗后的大肠癌相关研究!

2018-02-17 MedSci MedSci原创

接受膈下放射治疗或含丙卡巴肼化疗的霍奇金淋巴瘤生存者发生结直肠癌(CRC)的风险增加5倍。近期,一项发表在杂志GUT上的研究旨在通过评估组织病理学和分子特征来提供对治疗相关CRC(t-CRC)发展的一些见解。此项研究通过免疫组织化学、微卫星不稳定性(MSI)和KRAS/BRAF突变分析了在霍奇金淋巴瘤幸存者队列中诊断的54个t-CRC的错配修复(MMR)蛋白。评估MSI t-CRCs的启动子甲基化

接受膈下放射治疗或含丙卡巴肼化疗的霍奇金淋巴瘤生存者发生结直肠癌(CRC)的风险增加5倍。近期,一项发表在杂志GUT上的研究旨在通过评估组织病理学和分子特征来提供对治疗相关CRC(t-CRC)发展的一些见解。

此项研究通过免疫组织化学、微卫星不稳定性(MSI)和KRAS/BRAF突变分析了在霍奇金淋巴瘤幸存者队列中诊断的54个t-CRC的错配修复(MMR)蛋白。评估MSI t-CRCs的启动子甲基化和MMR基因突变。通过计算机模拟预测和功能分析评估了MMR基因突变的致病性。与一般人群CRC(n = 1111)的频率进行比较。

此项研究结果显示:KRAS和BRAF突变分别存在于41%和15%的t-CRC中。与一般人群中的CRC相比,t-CRC的MSI频率更高(24%比11%,p = 0.003),更频繁地失去MSH2/MSH6染色(13%比1%,p <0.001)。 MLH1/PMS2染色和MLH1启动子甲基化缺失在t-CRC和一般人群中同样常见。在没有MLH1启动子甲基化的MSI CRCs中,在7/10(70%)的t-CRCs中和8/36(22%)的普通人群CRC中检测到双体细胞MMR基因突变(或杂合性丧失)( p= 0.008)。这些t-CRCs中的MMR基因突变被归类为致病性的。MSI t-CRC病例不能归因于Lynch综合征。

此项研究证实了由体细胞MMR基因突变导致的t-CRCs中MSI频率更高。这提示了体细胞MMR基因突变与之前的抗癌治疗的新关联。

原始出处:
Rigter LS, Snaebjornsson P, et al. Double somatic mutations in mismatch repair genes are frequent in colorectal cancer after Hodgkin's lymphoma treatment. Gut. 2018 Mar;67(3):447-455. doi: 10.1136/gutjnl-2016-312608. Epub 2016 Nov 8. 

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  2. [GetPortalCommentsPageByObjectIdResponse(id=1800484, encodeId=9fca180048434, content=<a href='/topic/show?id=cbf9e254051' target=_blank style='color:#2F92EE;'>#相关研究#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=72540, encryptionId=cbf9e254051, topicName=相关研究)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a9de34, createdName=shenxlcyp, createdTime=Sun Dec 16 00:07:00 CST 2018, time=2018-12-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=289354, encodeId=c8572893546f, content=霍奇金淋巴瘤治疗的相关研究., beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160806/IMG57A5698BDB0244113.jpg, createdBy=32a91358059, createdName=jyzxjiangqin, createdTime=Tue Feb 20 07:46:49 CST 2018, time=2018-02-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=288715, encodeId=394b288e15e8, content=学习了谢谢分享!!, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zMoyicyo6ia9f4IuLQAwZoxD6Hx4ibd5CMcOCYhStY6oDibbKK6O2X8iaicldO5ib8j1iapOIobIKCGiczU2A/0, createdBy=56251941490, createdName=虈亣靌, createdTime=Sat Feb 17 18:43:42 CST 2018, time=2018-02-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=288701, encodeId=2f4e288e016e, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2017/09/11/eb1f237032e0bf07b10833fc3722e645.jpg, createdBy=2fed2145219, createdName=紫迎馨, createdTime=Sat Feb 17 16:26:17 CST 2018, time=2018-02-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=288697, encodeId=25b628869e99, content=好文章.学习了., beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=60791943465, createdName=1e0f8808m18(暂无匿称), createdTime=Sat Feb 17 15:57:11 CST 2018, time=2018-02-17, status=1, ipAttribution=)]
    2018-02-20 jyzxjiangqin

    霍奇金淋巴瘤治疗的相关研究.

    0

  3. [GetPortalCommentsPageByObjectIdResponse(id=1800484, encodeId=9fca180048434, content=<a href='/topic/show?id=cbf9e254051' target=_blank style='color:#2F92EE;'>#相关研究#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=72540, encryptionId=cbf9e254051, topicName=相关研究)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a9de34, createdName=shenxlcyp, createdTime=Sun Dec 16 00:07:00 CST 2018, time=2018-12-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=289354, encodeId=c8572893546f, content=霍奇金淋巴瘤治疗的相关研究., beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160806/IMG57A5698BDB0244113.jpg, createdBy=32a91358059, createdName=jyzxjiangqin, createdTime=Tue Feb 20 07:46:49 CST 2018, time=2018-02-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=288715, encodeId=394b288e15e8, content=学习了谢谢分享!!, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zMoyicyo6ia9f4IuLQAwZoxD6Hx4ibd5CMcOCYhStY6oDibbKK6O2X8iaicldO5ib8j1iapOIobIKCGiczU2A/0, createdBy=56251941490, createdName=虈亣靌, createdTime=Sat Feb 17 18:43:42 CST 2018, time=2018-02-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=288701, encodeId=2f4e288e016e, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2017/09/11/eb1f237032e0bf07b10833fc3722e645.jpg, createdBy=2fed2145219, createdName=紫迎馨, createdTime=Sat Feb 17 16:26:17 CST 2018, time=2018-02-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=288697, encodeId=25b628869e99, content=好文章.学习了., beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=60791943465, createdName=1e0f8808m18(暂无匿称), createdTime=Sat Feb 17 15:57:11 CST 2018, time=2018-02-17, status=1, ipAttribution=)]
    2018-02-17 虈亣靌

    学习了谢谢分享!!

    0

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    2018-02-17 紫迎馨

    学习了

    0

  5. [GetPortalCommentsPageByObjectIdResponse(id=1800484, encodeId=9fca180048434, content=<a href='/topic/show?id=cbf9e254051' target=_blank style='color:#2F92EE;'>#相关研究#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=29, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=72540, encryptionId=cbf9e254051, topicName=相关研究)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=a9de34, createdName=shenxlcyp, createdTime=Sun Dec 16 00:07:00 CST 2018, time=2018-12-16, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=289354, encodeId=c8572893546f, content=霍奇金淋巴瘤治疗的相关研究., beContent=null, objectType=article, channel=null, level=null, likeNumber=60, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160806/IMG57A5698BDB0244113.jpg, createdBy=32a91358059, createdName=jyzxjiangqin, createdTime=Tue Feb 20 07:46:49 CST 2018, time=2018-02-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=288715, encodeId=394b288e15e8, content=学习了谢谢分享!!, beContent=null, objectType=article, channel=null, level=null, likeNumber=66, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zMoyicyo6ia9f4IuLQAwZoxD6Hx4ibd5CMcOCYhStY6oDibbKK6O2X8iaicldO5ib8j1iapOIobIKCGiczU2A/0, createdBy=56251941490, createdName=虈亣靌, createdTime=Sat Feb 17 18:43:42 CST 2018, time=2018-02-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=288701, encodeId=2f4e288e016e, content=学习了, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://cdnapi.center.medsci.cn/medsci/head/2017/09/11/eb1f237032e0bf07b10833fc3722e645.jpg, createdBy=2fed2145219, createdName=紫迎馨, createdTime=Sat Feb 17 16:26:17 CST 2018, time=2018-02-17, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=288697, encodeId=25b628869e99, content=好文章.学习了., beContent=null, objectType=article, channel=null, level=null, likeNumber=63, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=60791943465, createdName=1e0f8808m18(暂无匿称), createdTime=Sat Feb 17 15:57:11 CST 2018, time=2018-02-17, status=1, ipAttribution=)]
    2018-02-17 1e0f8808m18(暂无匿称)

    好文章.学习了.

    0

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