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您所在的位置:首頁(yè) > 腫瘤科醫(yī)學(xué)進(jìn)展 > [ASCO2015]早期化療延長(zhǎng)晚期前列腺癌生存期?

[ASCO2015]早期化療延長(zhǎng)晚期前列腺癌生存期?

2015-05-15 15:54 閱讀:3216 來源:醫(yī)脈通 作者:林* 責(zé)任編輯:林夕
[導(dǎo)讀] 第51屆美國(guó)臨床腫瘤學(xué)會(huì)(ASCO)年會(huì)將于5月29日-6月2日在芝加哥召開。13日,ASCO發(fā)表了四項(xiàng)重要研究,分別為廣泛使用維生素片可減少非黑色素瘤皮膚癌風(fēng)險(xiǎn),早期化療可延長(zhǎng)晚期前列腺癌患者生命,以及可以提高罕見腎癌兒童和復(fù)發(fā)性多發(fā)性骨髓瘤成人預(yù)后的新

    第51屆美國(guó)臨床腫瘤學(xué)會(huì)(ASCO)年會(huì)將于5月29日-6月2日在芝加哥召開。13日,ASCO發(fā)表了四項(xiàng)重要研究,分別為廣泛使用維生素片可減少非黑色素瘤皮膚癌風(fēng)險(xiǎn),早期化療可延長(zhǎng)晚期前列腺癌患者生命,以及可以提高罕見腎癌兒童和復(fù)發(fā)性多發(fā)性骨髓瘤成人預(yù)后的新治療方案。整理如下:

    多西他賽和/或唑來膦酸治療激素缺乏的前列腺癌:來自STAMPEDE研究的第一個(gè)總生存期結(jié)果(摘要5001)背景:STAMPEDE是一項(xiàng)應(yīng)用新型多組多階段設(shè)計(jì)的隨機(jī)對(duì)照試驗(yàn)。本試驗(yàn)入組了高危局限性晚期或轉(zhuǎn)移性前列腺癌(PCa)男性患者(pts),這些患者第一次開始長(zhǎng)期內(nèi)分泌治療(HT)。該試驗(yàn)起初評(píng)估了加入3種治療方法中的1種或2種到標(biāo)準(zhǔn)療法中(SOC)。研究人員對(duì)比了3項(xiàng)研究的原始生存結(jié)果,這3項(xiàng)研究通過所有的中間分析[多西他賽(D)、唑來膦酸(ZA),和(D)+(ZA)組合]招募受試者。

    方法:SOC是激素治療≥3年;直到2011年11月份,鼓勵(lì)N0M0患者行RT,然后再?gòu)?qiáng)制;RT是N+M0患者的可選方案。按照2:1:1:1的比例隨機(jī)分層分配患者:SOC(對(duì)照),SOC+D,SOC+ZA,和SOC+D+ZA.ZA每次4mg,每三周一次,共6個(gè)周期,然后,每四周一次,直到2年。D每次75mg/m2,每三周一次,共6個(gè)周期,同時(shí)每天給予10mg氫化波尼松。

    主要終點(diǎn)指標(biāo)是生存期(從隨機(jī)入組到由任何原因引起死亡的時(shí)間)。兩兩比較每組患者的生存期,90%的P值為單側(cè)α2.5%,風(fēng)險(xiǎn)比0.75,要求對(duì)照組出現(xiàn)——400例死亡病例,包括對(duì)無(wú)復(fù)發(fā)生存期分析的3對(duì)中間缺益分析。分析采用對(duì)數(shù)秩檢驗(yàn)的Cox模型,根據(jù)分層因素進(jìn)行調(diào)整。

    結(jié)果:從2005年10月到2013年3月,2962例患者隨機(jī)入組到這四個(gè)組中?;颊咧形荒挲g是65歲;61%的轉(zhuǎn)移癌,14%的N+/XM0,22%的N0M0;93%的患者在確診后6個(gè)月內(nèi)隨機(jī)入組,中位PSA為65ng/ml.中位隨訪時(shí)間42個(gè)月。

    在SOC、SOC+D、SOC+ZA和SOC+D+ZA組中3——5級(jí)毒性反應(yīng)發(fā)生率分別為31%(SOC),50%(SOC+D)、32%(SOC+ZA)和52%(SOC+D+ZA)。對(duì)照組有405例死亡(84%死于PCa)。SOC+D vs SOC、SOC+ZA vs SOC、SOC+D+ZA vs SOC的風(fēng)險(xiǎn)比分別為0.76(95% CI 0.63,0.91;P=0.003)、0.93(95% CI 0.79,1.11;P=0.437)、0.81(95% CI 0.68,0.97;P=0.020)。SOC和SOC+D組的中位生存期分別為67個(gè)月和77個(gè)月,提高了10個(gè)月。M0和M1期的研究結(jié)果不久會(huì)提交。

    結(jié)論:來自STAMPEDE試驗(yàn)的生存數(shù)據(jù)顯示,對(duì)于初次開始長(zhǎng)期接受內(nèi)分泌治療的男性患者,在治療時(shí)加入多西他賽而不是唑來膦酸可以獲得臨床和統(tǒng)計(jì)學(xué)的顯著生存改善。

    摘要原文:

    Background: STAMPEDE is a randomised controlled trial using a novel multi-arm multi-stage design. It recruits men (pts) with high-risk locally advanced or metastatic prostate cancer (PCa) starting long-term hormone therapy (HT) for the first time. The trial initially assessed adding 1 or 2 of 3 treatment approaches to standard of care (SOC)。 We report primary survival results for 3 research comparisons that recruited through all their intermediate **yses: docetaxel (D), zoledronic acid (ZA) & the combination (D+ZA)。

    Methods: SOC was hormone therapy for > = 3yrs; RT was encouraged for N0M0 pts up to Nov-2011, then mandated; RT was optional for N+M0 pts. Stratified randomisation allocated pts 2:1:1:1 to SOC (control), SOC+D, SOC+ZA or SOC+D+ZA. 4mg ZA was given for six 3-weekly cycles then 4-weekly until 2yrs. D was given as 75mg/m2 for six 3-weekly cycles with prednisolone 10mg daily. The primary outcome measure was survival (time from randomisation to death from any cause)。 Pairwise comparisons to control on survival for each research arm had 90% power at 2.5% 1-sided alpha for a hazard ratio of 0.75 requiring ——400 control arm deaths, accounting for 3 intermediate lack-of-benefit **yses on failure-free survival. Analyses used the Cox model of the logrank test, adjusted for stratification factors.

    Results: From Oct-2005 to Mar-2013, 2,962 pts were randomised to the 4 arms. The groups were balanced with median age 65yrs; 61% metastatic, 14% N+/XM0, 22% N0M0; 93% diagnosed within 6m of randomisation; median PSA 65ng/ml. Median follow-up was 42m. Grade 3-5 toxicity was reported for 31% SOC, 50% SOC+D, 32% SOC+ZA and 52% SOC+D+ZA.There were 405 deaths on the control arm (84% from PCa)。 The hazard ratio was 0.76 (95% CI 0.63, 0.91; p = 0.003) for SOC+D vs SOC; 0.93 (95% CI 0.79, 1.11; p = 0.437) for SOC+ZA vs SOC; and 0.81 (95% CI 0.68, 0.97; p = 0.020) for SOC+D+ZA vs SOC. Median survival was increased by 10m from 67m on SOC to 77m on SOC+D. Results in M0 and M1 disease will be shown.

    Conclusions: Survival data from STAMPEDE show a clinically and statistically significant improvement in survival from adding docetaxel but not from adding zoledronic acid in men starting long-term hormone therapy for the first time.


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