J Clin Oncol:不禁食也可使用阿比特龙,剂量还更低?

2018-03-30 海北 MedSci原创

醋酸阿比特龙(AA)是转移性去势抵抗性前列腺癌(CRPC)的标准护理药物。食物效应很大,AA在关键试验中是在禁食条件下施用的。

醋酸阿比特龙(AA)是转移性去势抵抗性前列腺癌(CRPC)的标准护理药物。食物效应很大,AA在关键试验中是在禁食条件下施用的。最近,来自芝加哥大学的研究人员试图检验,在CRPC患者中,低剂量AA(LOW; 250 mg,低脂饮食)与标准剂量AA(STD; 1,000 mg,禁食)有相似的活性。

来自美国和新加坡七个机构的患有CRPC的患者(n = 72)被随机分配到STD或LOW组,每天两次接受5毫克强的松的治疗。研究人员每月评估患者的前列腺特异性抗原(PSA),并且每12周用疾病负荷射线照相,评估睾酮/脱氢表雄酮硫酸盐含量。研究人员也收集了血浆,用于测量药物浓度。采用非劣效性设计,作为药效学的生物标志物,PSA的变化是主要终点。无进展生存期(PFS),PSA反应(减少≥50%),雄激素水平的变化,和药代动力学是次要终点。

研究人员发现,在12周时,与STD(-1.19)相比,LOW组对PSA的影响更大(平均对数变化,-1.59),并且研究人员根据预定义的标准建立了LOW的非劣性。PSA的反应率在LOW组为58%,在STD组为50%,两组的中位PFS约为9个月。两组的雄激素水平均降低。尽管PSA反应或PFS没有差异,但STD中阿比特龙的浓度更高。

以PSA指标相比,低剂量AA(含低脂早餐)不劣于标准剂量。鉴于药物经济影响,这些数据需要处方者,付款人和患者综合考虑。为了评估这种方法的长期效果,还需要进行其他研究。


原始出处:

Russell Z. Szmulewitz et al. Prospective International Randomized Phase II Study of Low-Dose Abiraterone With Food Versus Standard Dose Abiraterone In Castration-Resistant Prostate CancerJournal of Clinical Oncology, 2018; DOI: 10.1200/JCO.2017.76.4381


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  2. [GetPortalCommentsPageByObjectIdResponse(id=1865396, encodeId=ba9218653968c, content=<a href='/topic/show?id=16ce133504e' target=_blank style='color:#2F92EE;'>#Oncol#</a>, beContent=null, objectType=article, channel=null, level=null, likeNumber=26, replyNumber=0, topicName=null, topicId=null, topicList=[TopicDto(id=13350, encryptionId=16ce133504e, topicName=Oncol)], attachment=null, authenticateStatus=null, createdAvatar=, createdBy=4dfa37, createdName=智者为医08, createdTime=Mon Aug 20 16:08:00 CST 2018, time=2018-08-20, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=301344, encodeId=e53830134441, content=学习一下谢谢, beContent=null, objectType=article, channel=null, level=null, likeNumber=55, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/mONcle9pic3zSn0GqHrsfLGSUSR8zwnWWLT4FMl5XH8S58HuZslVkLsAPbXDXaliagK7TOxQfmngKibG1yrDonepCLDkcxGk8hS/0, createdBy=b8282062892, createdName=changjiu, createdTime=Sat Mar 31 05:43:46 CST 2018, time=2018-03-31, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=301296, encodeId=43d6301296ed, content=醋酸阿比特龙(AA)是转移性去势抵抗性前列腺癌(CRPC)的标准护理药物.食物效应很大.AA在关键试验中是在禁食条件下施用的.最近.来自芝加哥大学的研究人员试图检验.在CRPC患者中.低剂量AA(LOW;250mg.低脂饮食)与标准剂量AA(STD;1,000mg.禁食)有相似的活性., beContent=null, objectType=article, channel=null, level=null, likeNumber=52, replyNumber=0, topicName=null, topicId=null, topicList=[], attachment=null, authenticateStatus=null, createdAvatar=https://wx.qlogo.cn/mmopen/NUyjXTCJjo7cJ6ejWUr2nIia8qOvAKNdLHr32Df6G8iaoaOx6pHaoiacwp26DaslxZHCGbibZhhCGven4rvmWP60GahtzgFjgCjR/0, createdBy=6b111703011, createdName=有备才能无患, createdTime=Fri Mar 30 22:56:07 CST 2018, time=2018-03-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=301229, encodeId=7d1e30122988, content=学习了很多先进的医学研究, beContent=null, objectType=article, channel=null, level=null, likeNumber=59, 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=Fri Mar 30 18:59:13 CST 2018, time=2018-03-30, status=1, ipAttribution=), GetPortalCommentsPageByObjectIdResponse(id=301218, encodeId=9caf30121831, content=学习一下谢谢分享, 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/jW482SpianMayicTRbRZ5RzaiabIFicf63hKvVMjL6aJlx4yX4UcXmzX9DyibCRcicq0QtCRWMaQKh8MYjE1D3EKUBopgiaGWYuqbeR/0, createdBy=0c2b1999806, createdName=三生有幸9135, createdTime=Fri Mar 30 17:02:32 CST 2018, time=2018-03-30, status=1, ipAttribution=)]
    2018-03-31 changjiu

    学习一下谢谢

    0

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    2018-03-30 有备才能无患

    醋酸阿比特龙(AA)是转移性去势抵抗性前列腺癌(CRPC)的标准护理药物.食物效应很大.AA在关键试验中是在禁食条件下施用的.最近.来自芝加哥大学的研究人员试图检验.在CRPC患者中.低剂量AA(LOW;250mg.低脂饮食)与标准剂量AA(STD;1,000mg.禁食)有相似的活性.

    0

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    2018-03-30 虈亣靌

    学习了很多先进的医学研究

    0

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    2018-03-30 三生有幸9135

    学习一下谢谢分享

    0

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以往的研究已经证明,转移性去势抵抗性前列腺癌(mCRPC)患者循环肿瘤细胞(CTCs)中表达雄激素受体剪接变异体7(AR-V7)可预测其对阿比特龙(abiraterone)或恩杂鲁胺(enzalutamide)的治疗反应较差。

Eur Urol:比较醋酸阿比特龙和多西他赛联合雄激素剥夺治疗在高风险和转移性未经激素治疗的前列腺癌中的作用:系统评价与荟萃分析。

最近,随机临床试验已经验证了在使用激素剥夺疗法(ADT,使用波尼松/泼尼松龙)治疗未经激素治疗的晚期前列腺癌(PCa)时联合多西他赛或阿比特龙的益处。

New Engl J Med:前列腺癌新疗法可帮助更多患者

英国研究人员称,前列腺癌的最大临床试验之一获得了“强有力的结果”。

Eur Urol:一线阿比特龙/恩杂鲁胺疗效与DNA修复基因胚系遗传突变相关

越来越多的证据表明进展期前列腺癌有遗传性DNA修复基因突变背景。研究发现,约7%~12%的转移性前列腺癌存在DNA损伤修复基因,如BRCA1/2、ATM等的遗传性突变。但是,DNA损伤修复基因的遗传突变对晚期前列腺癌,尤其是接受新一代内分泌治疗(next-generation hormonal therapy, NHT)患者预后方面的研究甚少。

CLIN CANCER RES:前列腺癌患者前列腺内阿比特龙水平和SLCO基因变化与病理反应有关

SLCO基因改变会影响细胞类固醇摄取,与前列腺癌结局有关。CYP17A抑制剂阿比特龙也有类固醇结构,SLCO编码的受体可能影响其转运,SLCO基因改变可能会影响细胞内阿比特龙水平并影响其疗效。CLIN CANCER RES近期发表了一篇文章,研究SLCO基因是否对阿比特龙摄取产生影响。

N Engl J Med:阿比特龙联合强的松能增加转移性去势敏感前列腺癌生存期

醋酸阿比特龙可用于治疗转移性去势抵抗前列腺癌。2017年7月,发表在《N Engl J Med》的一项研究显示,阿比特龙联合强的松还可增贾转移性去势敏感前列腺癌的总生存期。