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    您所在的位置:首頁(yè) > 腫瘤科醫學(xué)進(jìn)展 > [ASCO2015]OEO5試驗:食管癌新輔助化療周期是否需延長(cháng)?

    [ASCO2015]OEO5試驗:食管癌新輔助化療周期是否需延長(cháng)?

    2015-06-04 21:46 閱讀:1992 來(lái)源:醫脈通 作者:林* 責任編輯:林夕
    [導讀] 2015年ASCO年會(huì )于5月29日—6月2日在美國芝加哥召開(kāi)。5月31日上午的消化系統(非結直腸)腫瘤口頭報告專(zhuān)場(chǎng)上,來(lái)自英國醫學(xué)研究委員會(huì )OEO5隨機試驗(ISRCTN 01852072)的研究結果揭示了可切除食管和交界區腺癌患者接受新輔助化療的情況。

        2015年ASCO年會(huì )于5月29日—6月2日在美國芝加哥召開(kāi)。5月31日上午的消化系統(非結直腸)腫瘤口頭報告專(zhuān)場(chǎng)上,來(lái)自英國醫學(xué)研究委員會(huì )OEO5隨機試驗(ISRCTN 01852072)的研究結果揭示了可切除食管和交界區腺癌患者接受新輔助化療的情況。整理如下:

        新輔助化療(2個(gè)周期順鉑/5-氟尿嘧啶)(CF)序貫手術(shù)治療是局部晚期食管癌的標準治療方案。該項研究探討了增加化療周期數(4個(gè)周期表柔比星/順鉑/卡培他濱(ECX))是否會(huì )帶來(lái)患者預后的改善。

        該項研究是一項多中心隨機III期臨床試驗,將2個(gè)周期CF化療與4個(gè)周期ECX化療序貫食管切除術(shù)的療效進(jìn)行比較,其中低位和交界區腺癌(I型和II型)聯(lián)合了2區淋巴結清掃。主要終點(diǎn)是總生存期(OS);預期入組842例患者(677例死亡),預計3年存活率提高至82%(或70%),提升幅度為30%至38%(或37%),檢驗效能為2α=5%.死亡病例累計未達到預期值,但***數據監測委員會(huì )認為該數據足夠充分,結果可以發(fā)布。次要預后包括無(wú)病生存期(DFS),無(wú)進(jìn)展生存期(PFS),病理R0切除率,Mandard分級,和生活質(zhì)量。

        2005至2011年,英國72個(gè)中心入組897例(CF:451例,ECX:446例),按照1:1隨機分配。兩組間的基線(xiàn)特征類(lèi)似(總體,男性90%,中位年齡62歲[四分位數間距56-67],60%的PET檢查,分期T3 N0占22%、T3 N1占65%)。CF組96%的患者接受了2個(gè)周期化療,ECX組89%的患者接受了3個(gè)周期以上化療。

        CF組3/4級毒副反應的發(fā)生率較低(30% vs 47%,P<0.001)。本研究R0切除率CF組為60%,ECX組為66%;Mandard分級≤3級的發(fā)生率CF組15%,而ECX組可達到32%,其中有3例約11%患者達到完全緩解。兩組術(shù)后并發(fā)癥的發(fā)生率相似(CF:57%,ECX:62%),術(shù)后30天(CF:2%,ECX:2%),術(shù)后90天(CF:4%,ECX:5%)。ECX組在PFS和DFS上更有優(yōu)勢,危險比(HR,95%CI)PFS 0.86(0.74-1.01),DFS 0.88(0.75-1.03)。CF組315例死亡,ECX組298例死亡,兩組OS的HR值為0.92(0.79-1.08,P=0.3017),兩組的3年生存率差異較小CF 39%(35-44%)vs ECX 42%(37-46%)。

        通過(guò)試驗發(fā)現,延長(cháng)的ECX方案在PFS,DFS和腫瘤消退上有一定優(yōu)勢,但未轉化為生存獲益。相比于2個(gè)周期CF化療,4個(gè)周期ECX化療的總化療毒副反應發(fā)生率提高,但手術(shù)并發(fā)癥未見(jiàn)增加。臨床試驗信息:01852072.

        閱讀原文摘要

        Neoadjuvant chemotherapy for resectable oesophageal and junctional adenocarcinoma: Results from the UK Medical Research Council randomised OEO5 trial (ISRCTN 01852072)。(Abstract 4002)Authors:Derek Alderson, Ruth E Langley,et al.

        Session Type:Oral Abstract Session

        Background:Neoadjuvant chemotherapy (2 cycles cisplatin/5 fluorouracil) (CF) followed by surgery is a standard of care for locally advanced oesophageal cancer. We investigated whether more chemotherapy (4 cycles epirubicin/cisplatin /capecitabine (ECX)) would improve outcomes.

        Methods:A multi-centre, randomised, phase III trial comparing 2 cycles of CF with 4 cycles of ECX followed by oesophagectomy with 2-field lymphadenectomy for lower oesophageal and junctional (Types I and II) adenocarcinoma. Primary outcome was overall survival (OS); 842 patients (677 deaths) would detect an increase in 3-year survival from 30% to 38% (or 37%) with 82% (or 70%) power with 2α = 5%. Deaths accrued more slowly than anticipated but the Independent Data Monitoring Committee considered the data sufficiently robust for release. Secondary outcomes include disease-free (DFS) and progression-free survival (PFS), pathological R0 resection rate, Mandard grade and quality of life.

        Results:From 2005-2011, 897 patients (451 CF, 446 ECX) from 72 UK centres were randomly allocated (1:1)。 Baseline characteristics were similar between the groups (overall, male 90%, median age 62 (IQR 56-67), staging included PET 60%, T3 N0 22%, T3 N1 65%)。 96% CF received 2 cycles, 89% ECX > 3 cycles. Grade 3/4 toxicity was lower with CF (30% v 47% p < 0.001.) Of those patients having a resection R0 rates were CF 60%, ECX 66% with a Mandard grade ≤ 3 achieved in CF 15% v ECX 32% with 3 and 11% achieving complete response. Post-operative complications were similar (CF 57%, ECX 62%) as were deaths at 30 (CF 2%, ECX 2%) and 90 days post-surgery (CF 4%, ECX 5%)。 PFS and DFS favoured ECX, hazard ratio (HR, 95% CI) PFS 0.86 (0.74-1.01), DFS 0.88 (0.75-1.03)。 HR for OS was 0.92 (0.79-1.08, p = 0.3017) based on 315 CF and 298 ECX deaths, with similar 3 year survival rates CF 39% (35-44%) vs ECX 42% (37-46%)。

        Conclusions:There is some evidence of a benefit from the prolonged ECX regimen, in terms of PFS, DFS and tumour regression at resection, but this does not translate into a survival benefit. Overall chemotherapy toxicity was higher with 4 cycles of ECX compared to 2 cycles of CF but surgical morbidity was not increased. Clinical trial ***rmation: 01852072.


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