Perioperative pembrolizumab (pembro) or placebo (pbo) + neoadjuvant cisplatin (cis) and gemcitabine (gem) in participants (pts) with muscle-invasive bladder cancer (MIBC): the double-blind, phase 3 KEYNOTE-866 study
https://esmocongress.esmo.org
ESMO 2026
2026 年 10 月 23–27 日 · Madrid · 共 3194 条
KEYNOTE-866
★★★23 人 · 26 条 · 1 篇摘要
本事件热度走势
当前热度 2·可比范围峰值 3(10月24日 09:00)·近 24 小时可比范围变化 –·当前参与者 4
在肌层浸润性膀胱癌(MIBC)中,即便接受根治性膀胱切除等积极治疗,复发风险仍高、预后不佳;顺铂适合患者的新辅助化疗虽能改善结局,但总生存获益幅度有限[1]。正是基于这一未满足需求,以及 I/II 期研究中帕博利珠单抗单药或联合方案用于新辅助治疗的疗效信号[1],随机双盲 III 期 KEYNOTE-866 立项,检验围手术期帕博利珠单抗或安慰剂联合化疗,同期另有针对顺铂不适合人群的 KEYNOTE-905/EV-303[1]。作为免疫检查点抑制剂,其免疫相关不良事件谱——包括较常见的内分泌毒性——也已有系统描述[5]。
本次 ESMO26 报告的正是 KEYNOTE-866 的主要结果(摘要 4735O,Jens Bedke 汇报)。研究入组 907 例顺铂适合 MIBC,随机分入帕博利珠单抗+吉西他滨/顺铂→根治性膀胱切除→辅助帕博利珠单抗(n=453),或安慰剂对应方案(n=454),中位随访 60.9 个月。主要终点 EFS 未达标:中位 EFS 74.1 个月 vs NR,HR 0.88(95% CI 0.71–1.10),p=0.1366;pCR 44.4% vs 35.8%,估计差异 +8.9 个百分点(95% CI 2.5–15.1),但更高的 pCR 未转化为 EFS 获益;OS HR 1.00(95% CI 0.79–1.27),两臂中位 OS 均为 NR,pCR 与 OS 在层级检验下未做正式检验。接受膀胱切除者 91.6% vs 87.9%;3–5 级治疗期间不良事件 80.2% vs 75.1%,3–5 级免疫介导不良事件/输注反应 8.9% vs 1.8%。
相对既往认识,该读数把 I/II 期信号[1]置于 III 期检验之下并得到否定答案:在化疗基础上叠加围手术期帕博利珠单抗提高了 pCR,却未带来 EFS 改善,现场结论亦不支持在顺铂适合 MIBC 中常规加用这一策略。同场邀请讨论(Robert Jones)还把本研究与 NIAGARA(EFS HR 0.68)、ENERGIZE(EFS HR 0.94)并置比较,指出三者在 T2 疾病比例(40% vs 15% vs 76%)和 24 个月对照组 EFS(59.8% vs 70% vs 71.6%)等基线特征上差异明显,跨试验解读需谨慎;讨论还触及 ctDNA(治疗前阳性与更短 EFS/OS 相关,术前清除者结局更好,但尚不足以据此免除膀胱切除)以及 TROPHY-U-01 Cohort 7 的双 ADC+免疫数据(ORR 81%、中位 PFS 19.3 个月),这属于另一条线索,不改变 KEYNOTE-866 本身的阴性结论。
局限在于 OS 与 pCR 未经正式统计学检验,跨试验比较属探索性质,且 pCR 的病理评估在不同试验间未标准化;免疫检查点抑制剂仅使部分患者获益,应答与肿瘤免疫表型等特征相关[3],因此哪些患者真正需要强化治疗、哪些不需要仍有待前瞻性验证,本次结果本身也不足以独立改变现有治疗格局。
- 1.Perioperative pembrolizumab therapy in muscle-invasive bladder cancer: Phase III KEYNOTE-866 and KEYNOTE-905/EV-303 · Future Oncol 2021
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Axel S. Merseburger@amerseburger Toni Choueiri, MD@DrChoueiri Dra. María Natalia Gandur Quiroga@nataliagandur ★★★同题 KEYNOTE-866 · 23 人4735Opembrolizumab#BLADDERCANCER#MIBC#GUONCOLOGY#ONCOALERTAF781 浏览19 赞12 转发0 回复Dra. María Natalia Gandur Quiroga@nataliagandur Dr Amol Akhade@SuyogCancer 引用@Infographic to show the cross trial comparisons of 3 phase III perioperative IO trials in MIBC Only one is positive. Why ? I don't know. Looking forward towards full data of 2 negative trials on day 1 #esmo26 @myESMO
OncoAlert@OncoAlert ESMO - Eur. Oncology@myESMO MJosé Juan@mjuanfi81 David H Aggen, MD PhD@Dr_Aggen Mirrors of Medicine@mirrorsmed Yüksel Ürün@DrYukselUrun 引用@#ESMO26: No significant increase in event-free survival seen with peri-operative pembrolizumab or nivolumab in the KEYNOTE-866 or ENERGIZE #ClinicalTrials of resectable muscle-invasive #BladderCancer (#MIBC), as discussed by @y_loriot 🔗 https://ow.ly/TbzF50ZZ0s2 #InsightsbyESMO
Markus Eckstein@Markuseckstein3 Annals of Oncology@Annals_Oncology Dra. María Natalia Gandur Quiroga@nataliagandur 引用@OncoAlert 4Sight Abstracts to be Presented at #ESMO26 Perioperative Pembrolizumab or Placebo + Neoadjuvant Cisplatin and Gemcitabine in Muscle-Invasive Bladder Cancer: The Double-Blind, Phase 3 KEYNOTE-866 Study @garysteinbergmd @DrChrisHoimes 🔬 Phase 3, double-blind (n=907): perioperative pembrolizumab or placebo + neoadjuvant gemcitabine-cisplatin and RC + PLND in cisplatin-eligible MIBC. Primary endpoint: EFS. ➡️ Median EFS 74.1 mo vs NR; HR 0.88 (0.71–1.10); P=.1366 ➡️ pCR 44.4% vs 35.8%; OS HR 1.00 (0.79–1.27); neither formally tested ➡️ Grade 3–5 TEAEs 80.2% vs 75.1% ✅ Perioperative pembrolizumab did not confer a statistically significant EFS benefit; safety profile manageable and consistent with prior reports. #BladderCancer 🎙️ Jens Bedke 👥 Arlene Siefker-Radtke · Gary Steinberg · Hiroyuki Nishiyama · Xiao Fang · Ritesh Kataria · Blanca Homet Moreno · Christopher Hoimes (4Sight Made from Abstracts publicly available at the ESMO website) Pinging Our Faculty @DrChoueiri, @tompowles1, @apolo_andrea, @neerajaiims, @montypal, @Silke_Gillessen, @AOmlin, @brian_rini, @PGrivasMDPhD, @TiansterZhang, @amerseburger, @DrDanielHeng, @HHammersMD, @scocmem, @AndreaNecchi, @AmandaNizamMD, @drenriquegrande, @nataliagandur, @AlbigesL, @cdanicas, @declangmurphy, @seanmmcbride, @shilpaonc, @DrRanaMcKay, @scserendipity1, @DrYukselUrun, @ravikanesvaran, @BraunMDPhD, @EfstathiouEleni, @mzugman, @crisbergerot, @niklas_kluemper
Amanda Nizam, MD@AmandaNizamMD 引用@The OncoAlert #ESMO26 PULSE Faculty is ready! 🇪🇸 WE ARE HERE! Meet our incredible faculty reporting live from Madrid: @cdanicas @hoperugo @DrChoueiri @TiansterZhang @matteolambe @NiuSanford @stolaney1 @christine_lovly @amerseburger @GlopesMd @tompowles1 @montypal @Icro_Meattini @PGrivasMDPhD @brian_rini @CathyEngMD @apolo_andrea @AndreaNecchi @DrSGraff @BenWestphalen @graokane @to_be_elizabeth @ElisaAgostinett @nataliagandur @UOzkerim @DrMirallas @DrYukselUrun @Lucarecco @mzugman @HHorinouchi @p_ciracimd @DraMartinezLago @DrVilmaPBarcia @GIMedOnc @MarioBalsaMD @scocmem @AmandaNizamMD @GaiaGriguolo @JankovicK @Dr_Oncologista @Erman_Akkus @WeOncologists @niklas_kluemper @Markuseckstein3 Whether you're at #ESMO26 in Madrid or following from home, our faculty will bring you the latest science, insights, and key updates straight from the congress. OncoAlert has you covered! Less noise. No nonsense. Just science. Strictly by colleagues, for colleagues!
UroToday.com@urotoday Julian Chavarriaga@chavarriagaj International Urology Cancer Summit@urologysummit OncLive.com@OncLive Kohji Takemura, MD@KohjiToncol KEYNOTE-866:EFS 阴性。 ENERGIZE:EFS 阴性。 → 这些试验与 NIAGARA 之间的差异是什么? #ESMO26
Juan Pablo Rojas Manrique@JPRojasUroOnco Dra. María Natalia Gandur Quiroga@nataliagandur 引用@🚨⭐ #ESMO26 | GU ONCOLOGY — DAY 1 HIGHLIGHTS @OncoAlert 🟠🔵 From perioperative immunotherapy to molecular precision and next-generation treatments. A remarkable opening day in GU oncology, with important lessons for both #BladderCancer and #ProstateCancer. Here are our key scientific takeaways 👇 🟠 1️⃣ KEYNOTE-866 Abstract 4735O ❌ Perioperative pembrolizumab + gemcitabine/cisplatin failed to significantly improve EFS in cisplatin-eligible MIBC. 📊 EFS HR 0.88 (95% CI 0.71–1.10) p=0.1366 pCR: 44.4% vs 35.8% 💡 Higher pathological response did not translate into a statistically significant EFS benefit. 🟠 2️⃣ ENERGIZE Abstract 4736O ❌ Perioperative nivolumab + chemotherapy also failed to meet its co-primary endpoints. 📊 EFS HR 0.94; p=0.6697 pCR: 39.1% vs 29.6% 🔬 These findings reinforce the need to interpret response endpoints alongside durable clinical outcomes. 🟠 3️⃣ KEYNOTE-905 & KEYNOTE-B15 | 4733O / 4734O ✅ The exploratory three-arm KEYNOTE-905 analysis favored EV + pembrolizumab over surgery alone. 📊 OS HR 0.48 pCR: 58.8% vs 25.3% with pembrolizumab alone and 10.3% with surgery alone. 🧬 KEYNOTE-B15: ctDNA clearance with EV + pembrolizumab vs gemcitabine/cisplatin: ✅ 82.1% vs 66.7% ctDNA positivity was associated with poorer EFS. 📌 Molecular monitoring offers exciting opportunities for risk stratification, but ctDNA-guided treatment decisions still require prospective validation. 🟠 4️⃣ TROPHY-U-01 COHORT 7 4742O 💊 SG + EV + zimberelimab in untreated metastatic urothelial cancer. ✅ ORR: 81% ✅ Median PFS: 19.3 months ✅ Median DoR: 16.7 months ⚠️ Phase Ib, only 21 patients, with substantial toxicity. Promising—but not yet practice-changing. 🔵 5️⃣ CAPItello-281 LBA56 Updated overall survival in PTEN-deficient de novo mHSPC. 📊 Capivasertib + abiraterone vs placebo + abiraterone: ✅ Median OS: 57.4 vs 46.5 months HR 0.82 (95% CI 0.68–0.99) ⚠️ The prespecified statistical significance threshold was not met. An encouraging survival signal, but not a formally established OS benefit. 🔵 6️⃣ THE NEXT FRONTIER IN PROSTATE CANCER Today's educational sessions highlighted major advances in: ☢️ PSMA-targeted radioligand therapy 🧬 AR degraders and RIPTACs 💊 Next-generation ADCs 🔬 T-cell engagers and precision immunotherapy The key challenge is moving from promising biological activity toward durable clinical benefit, acceptable toxicity and better patient selection. ⭐ POINT OF VIEW More treatment does not always mean better outcomes. And an impressive response rate does not automatically establish a new standard of care. Today's data reinforce three essential principles: ✅ Robust survival endpoints matter. ✅ Biomarkers must move from prognostic value to validated therapeutic guidance. ✅ Novel combinations require careful assessment of efficacy, toxicity and clinical applicability. 💡 The future of GU oncology is not simply treatment intensification—it is smarter, biologically informed treatment selection. 🎯 The right strategy. The right patient. The right time. Outstanding scientific discussions throughout Day 1! @gbanna74 @ravikanesvaran @nataliagandur @neerajaiims @Sebastiano_Buti @CinziaConted @dralishadamani @amg120395 @PGrivasMDPhD @koshkin85 @MicheleMaffezz @ParamMariappan @dmukherji @VanitaNoronha @montypa @DanieleRaggi83 @PasRescigno @jteoh_hk @alison_tree @DrYukselUrun @yekeduz_emre @AgrawalTrush @ONCOassist @VuMedi @ProstateUK @OncologyNT @OncJournal #GUOncology #BladderCancer #ProstateCancer #mCRPC #MIBC #PrecisionOncology
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