
ESMO 2026
2026 年 10 月 23–27 日 · Madrid · 共 4873 条
PANKU-BREAST01
★★★22 人 · 23 条
本事件热度走势
当前热度 0·可比范围峰值 1(10月26日 06:00)·近 24 小时可比范围变化 –·当前参与者 1
在HR+/HER2−乳腺癌中,CDK4/6抑制剂经治之后如何安排治疗是当前临床的核心问题:辅助CDK4/6i后复发的患者正成为新的挑战人群,专门针对这一情景的研究仍然很少[10];主流策略强调按耐药生物标志物选择内分泌方案,对快速进展或内脏受累者及早转向T-DXd等抗体偶联药物(ADC)[12],ADC也被综述列为该瘤种靶向治疗的重要组成[8]。在这一背景下,EGFR×HER3双特异、TOP1载荷的ADC izalontamab brengitecan(伦康依隆妥单抗,iza-bren)的III期PANKU-Breast01被列为本次ESMO十大必知摘要之首。
会上LBA50报告该试验在中国HR+/HER2−晚期乳腺癌患者中进行,入组者既往接受过内分泌治疗、CDK4/6抑制剂及1–2线化疗(约70%仅1线)。iza-bren对比医生选择化疗:中位PFS 8.2 vs 4.0个月,HR 0.41(95% CI 0.33–0.53,p<0.0001),进展或死亡风险降低59%;ORR 40.5% vs 20.2%,中位DOR 6.9 vs 4.2个月;OS数据不成熟。安全性以血液学毒性为主,约50%患者出现G3+贫血、中性粒细胞减少与血小板减少,多数患者需要减量,primary G-CSF未被要求;ILD发生率1.1%,均为1–2级。
主站新闻与现场读数一致(cORR 40.5%、mPFS 8.2个月、对照cORR 20.2%、HR 0.41、ILD 1.1%且均为1–2级),并补充了现场之外的信息:结果于2026年10月23日在ESMO late-breaking环节公布并同步发表于《柳叶刀》主刊;该新适应症的上市申请已获受理;入组既往化疗需包含紫杉类;原文指出OS数据尚未成熟、生存获益未确立,并建议在全球人群及HER2阴性乳腺癌更早治疗线中进一步评估。
就认知推进而言,EGFR/HER3双靶使ADC的适用不再依赖HER2表达水平,ORR较化疗翻倍;有会场评论认为其疗效与DB04大体相当、但入组不限HER2状态,也有人提醒在T-DXd与SG已在临床使用的时代,仅优效于化疗尚不足以定位,双靶在既往TOP1-ADC经治后的增益仍待验证,且本次会议上SHR-A1811、TQB2102等ADC也在HER2-low人群读出III期结果[2][6]。局限同样清晰:OS不成熟、证据来自中国人群、血液学毒性导致多数患者减量,以及与现有ADC的用药排序,都留待后续回答。
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OncoAlert@OncoAlert Aya Mohamed | MSc, MD 🎗@Dr_Oncologista Sherene Loi, MD@LoiSher The Lancet@TheLancet Sara Tolaney@stolaney1 Dr Amol Akhade@SuyogCancer Yakup Ergün@dr_yakupergun Paolo Tarantino@PTarantinoMD Kazuki Nozawa, MD@kazuki_nozawa Yakup Ergün@dr_yakupergun 引用@#ESMO26 | PANKU-Breast01 In HR+/HER2− mBC, the EGFR/HER3 bispecific ADC (iza-bren): PFS: 8.18 vs 4.05 months (HR 0.41). Grade ≥3 TRAEs: 40.5% vs 20.2%. OS remains immature. An impressive PFS benefit. However, in an era when ADCs such as T-DXd and SG are already in use, superiority over chemotherapy alone is not enough. Another treatment option… The added value of bispecific targeting, particularly its efficacy after other TOP1-ADCs, remains uncertain. These are the key data needed to define its place in treatment sequencing.
Gaia Griguolo@GaiaGriguolo Mitsuo Terada, MD, PhD@乳腺科医@MamMa_mimumemo EGFRとHER3のbispecific抗体ADCのPANKU-Breast01試験。HR+MBCの化学療法既治療例が対象。有意にPFSを延長(HR 0.41)。ILDは1.1%。
Philippe Aftimos, MD @aftimosp Kristina Jankovic, MD@JankovicK Carmen Criscitiello@CarmenCriscit Prof. Dr. Ahmet Dirican@dr_dirican Sara Soliman, MD@sara_soliman7 The Pharma Letter@ThePharmaLetter Breastcancer.org@Breastcancerorg Oncoinfo@Oncoinfo_it OncLive.com@OncLive KOL Pulse AI@KolPulseAI ScienceLink@sciencelinkonco