ASTRO 2016:中危前列腺癌患者接受近距离放疗就足够了

2016-09-28 Moon 译 MedSci原创

ASTRO年会上的数据显示:对于中度风险前列腺癌患者,近距离放射治疗基础上添加外照射治疗,并不能显著延长患者的无进展生存期。因此,只需要短距离放射治疗就能为这一类人群提供足够的癌症控制,并且长期不良事件更少。 德保罗医疗中心的Bradley Prestidge博士和同事们假设,中危前列腺癌患者在短距离放射治疗基础上添加外照射治疗、或组织植入放射性粒子,以周围健康组织的限制辐射暴露,与仅仅接受

ASTRO年会上的数据显示:对于中度风险前列腺癌患者,近距离放射治疗基础上添加外照射治疗,并不能显著延长患者的无进展生存期。因此,只需要短距离放射治疗就能为这一类人群提供足够的癌症控制,并且长期不良事件更少。

德保罗医疗中心的Bradley Prestidge博士和同事们假设,中危前列腺癌患者在短距离放射治疗基础上添加外照射治疗、或组织植入放射性粒子,以周围健康组织的限制辐射暴露,与仅仅接受短距离放射治疗的患者相比,5年无进展生存期(PFS)可改善10%。

研究者对579名男性(平均年龄67岁)中危前列腺癌患者的数据进行了分析,患者的临床分期为T1c (67%)到T2b,格里森评分在2-6之间+PSA在10-20之间,或格里森评分为7+PSA低于10(89%)。

患者随机分为近距离放射治疗(n = 292)或盆腔区域接受45 Gy外照射治疗(n = 287)。近距离放射治疗使用放射性碘-125或钯-103,接受外照射治疗的患者,其近距离放射治疗的剂量为110或100-Gy;仅仅接受近距离放射治疗的患者,其剂量为146-Gy或125-Gy。

PFS作为主要研究终点。中位随访期为6.7年。研究人员对443例患者长达5年的随访数据进行了分析评估。

66例患者经历了首次治疗失败,其中联合近距离放射治疗+外照射治疗组患者占34例,仅仅近距离放射治疗组患者占32例。

总体而言,联合近距离放射治疗+外照射治疗组和仅仅近距离放射治疗组患者的5年PFS率分别为85% (95% CI, 80-89)和86% (95% CI, 81-90)(HR = 1.02; P-futility = .0006)。

两组急性2级或更严重的毒性(28% vs. 27%)和急性3级或更严重的毒性(均为8%)没有组间差异。但是,联合近距离放射治疗+外照射治疗组发生迟发型2级或更严重的毒性(53% vs. 37%; P = .0001)和迟发型3级或更严重的毒性(12% vs. 7%; P = .039)的患者比例更高。联合近距离放射治疗+外照射治疗组经历3级或更糟的泌尿生殖毒性(7% vs. 3%)的患者比例更高,不过两组的3级或更严重的胃肠道毒性具有可比性(3% vs. 2%)。

原始出处:

Prestidge BR, et al. Abstract 7. Presented at: ASTRO Annual Meeting; Sept. 25-28, 2016; Boston.

Brachytherapy alone can control intermediate-risk prostate cancer.Healio.September 27, 2016

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  5. [GetPortalCommentsPageByObjectIdResponse(id=1710927, encodeId=9ce21e1092735, content=<a href='/topic/show?id=9a1c289680' target=_blank style='color:#2F92EE;'>#AST#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=36, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=2896, encryptionId=9a1c289680, topicName=AST)], attachment=null, authenticateStatus=null, createdAvatar=null, createdBy=8b9831894722, createdName=ms24272190615788285182, createdTime=Fri Mar 24 15:08:00 CST 2017, time=2017-03-24, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=2023405, encodeId=774c20234052c, content=<a href='/topic/show?id=8f319431534' target=_blank style='color:#2F92EE;'>#近距离放疗#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=37, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=94315, encryptionId=8f319431534, topicName=近距离放疗)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=460849, createdName=ymljack, createdTime=Thu Oct 27 06:08:00 CST 2016, time=2016-10-27, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=1813950, encodeId=400618139503c, content=<a href='/topic/show?id=e38794313f6' target=_blank style='color:#2F92EE;'>#近距离#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=35, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=94313, encryptionId=e38794313f6, topicName=近距离)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=f984116, createdName=kzlchina, createdTime=Tue Jan 31 04:08:00 CST 2017, time=2017-01-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=137402, encodeId=33ff13e402c5, content=继续关注, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzfPkmqRTH5rHib5mcib8Wb3QdXjhfOK1UubQL2lictjJFdFJ6Lc3cnnCOSWqxXZ4Kk6y5GdzDoy764R/0, createdBy=156e1644785, createdName=doctorJiangchao, createdTime=Wed Sep 28 22:17:15 CST 2016, time=2016-09-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=137401, encodeId=491913e401d6, content=继续学习, beContent=null, objectType=article, channel=null, level=null, likeNumber=61, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/jW482SpianMayicTRbRZ5RzfPkmqRTH5rHib5mcib8Wb3QdXjhfOK1UubQL2lictjJFdFJ6Lc3cnnCOSWqxXZ4Kk6y5GdzDoy764R/0, createdBy=156e1644785, createdName=doctorJiangchao, createdTime=Wed Sep 28 22:17:08 CST 2016, time=2016-09-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=137296, encodeId=85ad13e296e0, content=继续关注!, beContent=null, objectType=article, channel=null, level=null, likeNumber=54, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160811/IMG57AC91915ACA64463.jpg, createdBy=9c351934462, createdName=知难而进, createdTime=Wed Sep 28 20:37:12 CST 2016, time=2016-09-28, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=137295, encodeId=258413e29574, content=谢谢分享!, beContent=null, objectType=article, channel=null, level=null, likeNumber=67, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=http://cacheapi.medsci.cn/resource/upload/20160811/IMG57AC91915ACA64463.jpg, createdBy=9c351934462, createdName=知难而进, createdTime=Wed Sep 28 20:37:02 CST 2016, time=2016-09-28, status=1, ipAttribution=)]
    2016-09-28 doctorJiangchao

    继续学习

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    2016-09-28 知难而进

    继续关注!

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    2016-09-28 知难而进

    谢谢分享!

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