
ESMO 2026
2026 年 10 月 23–27 日 · Madrid · 共 4873 条
FOURLIGHT-1
★★★25 人 · 26 条
本事件热度走势
当前热度 0·可比范围峰值 1(10月26日 07:00)·近 24 小时可比范围变化 –·当前参与者 1
HR+/HER2−晚期乳腺癌的治疗格局已由CDK4/6抑制剂(palbociclib、ribociclib、abemaciclib)确立[9],但获得性耐药仍是主要挑战[9];辅助CDK4/6i治疗后仍有近10%患者在治疗中或结束后不久复发,复发后治疗的疗效基本未知[10]。目前进展后的策略以生物标志物分层为主:ESR1突变倾向新一代口服SERD,PIK3CA-AKT-PTEN通路改变用alpelisib或capivasertib联合氟维司群,快速进展或内脏病变则早转T-DXd等ADC[12]。Atirmociclib在文献中被描述为potential first-in-class、对CDK4选择性显著高于CDK6的抑制剂,I/IIa期联合内分泌治疗耐受良好且显示抗瘤活性[7]。
本次ESMO 2026 Proffered Paper 2报告的FOURLIGHT-1(摘要1842O)是一项开放标签随机II期研究[1][7]:辅助或一线CDK4/6i进展后的HR+/HER2−晚期/转移性乳腺癌患者按1:1接受atirmociclib(300 mg口服、每日两次、持续给药)+氟维司群或研究者选择(氟维司群单药或依维莫司+依西美坦),主要终点为研究者评估的PFS,共入组263例(126 vs 137,中位年龄57岁,数据截止2026年1月12日)[7]。会上口头报告的数字:中位PFS 9.4 vs 6.6个月,HR 0.60(0.440–0.825),p=0.0007;ORR 19.3% vs 11.3%,CBR 61.9% vs 46.0%;中性粒细胞减少为最常见TRAE,因TRAE停药仅4.0%,但≥3级不良事件更多见。现场还提到结果同步发表于Ann Oncol[7],且atirmociclib的一线III期试验正在进行。
主站中文产业新闻独立报道了同一方向:2026 ESMO有三项摘要聚焦HR+/HER2−晚期乳腺癌CDK4/6i治疗进展后的后续治疗,分别涉及atirmociclib、abemaciclib和giredestrant联合方案。这与现场信息一致,把FOURLIGHT-1置于同一竞争性赛道中,但未补充新的数字。
相对已有认识,FOURLIGHT-1推进的一步在于:CDK4/6i进展后,仅选择性抑制CDK4联合氟维司群仍带来约3个月的PFS差异和具有统计学显著性的HR,提示耐药背景下CDK4仍是可压制的靶点,4.0%的停药率也提示耐受性可能更好,这直接回应了现场“选择性CDK4抑制能否克服CDK4/6i耐药”的追问。局限同样清楚:这是开放标签II期,主要终点为研究者评估的PFS[7],多位现场评论者强调需要III期验证;OS、DOR等次要终点结果以及研究者选择组内两种方案的分层数据,在现有材料中均未披露。
- 1.1842O Efficacy and safety of atirmociclib (ATI) + fulvestrant (FUL) in patients (pts) with HR+/HER2– advanced/metastatic breast cancer (mBC) who progressed on prior CDK4/6 inhibitor (CDK4/6i) in a randomized phase 2 study (FOU… · ESMO 2026 2026
- 2.LBA14 A double-blind placebo controlled randomized phase III trial of fulvestrant and ipatasertib as treatment for HER-2 negative and estrogen receptor positive (ER+) metastatic breast cancer (MBC): Overall survival results of… · ESMO 2026 2026
- 3.LBA15 Anbenitamab plus albumin-bound docetaxel in patients (pts) with HER2-positive advanced breast cancer (BC): A randomized phase III study · ESMO 2026 2026
- 4.LBA26 Short-term preoperative durvalumab for stage I TNBC: First results from the phase II UNLOCK 14 - POP-DURVA trial · ESMO 2026 2026
- 5.LBA51 Results from KEYNOTE-B49: A phase 3, randomized, double-blind study of pembrolizumab (pembro) vs placebo (pbo) plus chemotherapy (CT) in participants (pts) with HR+/HER2− advanced breast cancer (ABC) · ESMO 2026 2026
- 6.LBA96 First-line (1L) datopotamab deruxtecan (Dato-DXd) vs chemotherapy in patients (pts) with locally recurrent inoperable or metastatic triple-negative breast cancer (mTNBC) for whom immunotherapy was not an option: Explorat… · ESMO 2026 2026
- 7.Atirmociclib and fulvestrant for patients with HR+/HER2- advanced/metastatic breast cancer who progressed on a prior cyclin-dependent kinase 4/6 inhibitor: primary analysis of the randomized FourLight-1 trial · Ann Oncol 2026
- 8.Breast Cancer: Molecular Pathogenesis, Targeted Therapy, Screening, and Prevention · MedComm (2020) 2026
- 9.Alternate actions of CDK4/6 inhibitors beyond cell cycle blockade: unexplored roles in therapy resistance · Cancer Metastasis Rev 2025
- 10.Managing relapses during or after adjuvant CDK4/6 inhibitors in HR-positive/HER2-negative early breast cancer: an emerging challenge · ESMO Open 2025
- 11.WITHDRAWN: From CDK4/6 to CDK2 and KAT: Evolving therapeutic approaches in HR+/HER2- breast cancer · Breast 2026
- 12.Beyond CDK4/6 Inhibition: Current Strategies in Hormone Receptor-Positive Metastatic Breast Cancer · Curr Treat Options Oncol 2026
OncoAlert@OncoAlert Aya Mohamed | MSc, MD 🎗@Dr_Oncologista Elisa Agostinetto@ElisaAgostinett Elisabetta Bonzano MD, PhD@to_be_elizabeth Prof. Dr. Ahmet Dirican@dr_dirican Mitsuo Terada, MD, PhD@乳腺科医@MamMa_mimumemo HR+HER2- MBCへのCDK4/6i後、CDK4阻害薬のatirmociclib+FULのPhase 2 FOURLIGHT-1試験。
Carmen Criscitiello@CarmenCriscit Guilherme Nader Marta@GuiNaderMarta Dra. María Natalia Gandur Quiroga@nataliagandur 引用@OncoAlert 4Sight Abstracts to be Presented at #ESMO26 Efficacy and Safety of Atirmociclib + Fulvestrant in Patients With HR+/HER2– Advanced/Metastatic Breast Cancer Who Progressed on Prior CDK4/6 Inhibitor in a Randomized Phase 2 Study (FOURLIGHT-1) @antgiorda 🔬 Randomized phase 2 (n=263): atirmociclib + fulvestrant vs investigator’s choice (fulvestrant or everolimus + exemestane) in HR+/HER2– mBC after prior CDK4/6i. Primary: investigator-assessed PFS. ➡️ Median PFS 9.4 vs 6.6 mo; HR 0.60 (0.440–0.825); 1-sided p=0.0007 ➡️ ORR in patients with measurable disease: 19.3% vs 11.3%; CBR: 61.9% vs 46.0% ➡️ Atirmociclib discontinuation due to TRAEs: 4.0%; most common TRAE neutropenia (46.4%) ✅ First next-generation CDKi to show significant and clinically meaningful PFS improvement after prior CDK4/6i, with a manageable safety profile. #BreastCancer 🎙️ Antonio Giordano (4Sight Made from Abstracts publicly available at the ESMO website) @matteolambe @aftimosp @E_de_Azambuja @DrSGraff @ErikaHamilton9 @hoperugo @stolaney1 @BianchiniGP @aftimosp @kevinpunie @ElisaAgostinett @to_be_elizabeth @GaiaGriguolo @JankovicK @raalbany @JavierCortesMD @JaniceTNBCmets @Prof_Nadia_H @LoiSher @jamecancerdoc @Lucarecco @Dr_Oncologista @guiandri76
Mirrors of Medicine@mirrorsmed 引用@OncoAlert 4Sight Abstracts to be Presented at #ESMO26 Efficacy and Safety of Atirmociclib + Fulvestrant in Patients With HR+/HER2– Advanced/Metastatic Breast Cancer Who Progressed on Prior CDK4/6 Inhibitor in a Randomized Phase 2 Study (FOURLIGHT-1) @antgiorda 🔬 Randomized phase 2 (n=263): atirmociclib + fulvestrant vs investigator’s choice (fulvestrant or everolimus + exemestane) in HR+/HER2– mBC after prior CDK4/6i. Primary: investigator-assessed PFS. ➡️ Median PFS 9.4 vs 6.6 mo; HR 0.60 (0.440–0.825); 1-sided p=0.0007 ➡️ ORR in patients with measurable disease: 19.3% vs 11.3%; CBR: 61.9% vs 46.0% ➡️ Atirmociclib discontinuation due to TRAEs: 4.0%; most common TRAE neutropenia (46.4%) ✅ First next-generation CDKi to show significant and clinically meaningful PFS improvement after prior CDK4/6i, with a manageable safety profile. #BreastCancer 🎙️ Antonio Giordano (4Sight Made from Abstracts publicly available at the ESMO website) @matteolambe @aftimosp @E_de_Azambuja @DrSGraff @ErikaHamilton9 @hoperugo @stolaney1 @BianchiniGP @aftimosp @kevinpunie @ElisaAgostinett @to_be_elizabeth @GaiaGriguolo @JankovicK @raalbany @JavierCortesMD @JaniceTNBCmets @Prof_Nadia_H @LoiSher @jamecancerdoc @Lucarecco @Dr_Oncologista @guiandri76
Kazuki Nozawa, MD@kazuki_nozawa Kristina Jankovic, MD@JankovicK Philippe Aftimos, MD @aftimosp Mali Barbi, MD MSc | Breast & Gyn Oncologist@DrBarbiOnc 引用@#FINER fulvestrant +/- ipatasertib (AKTi) 45% of pts were pathway altered PFS lengthened in ITT HR 0.68 and AKT altered cohorts HR 0.55 93% diarrhea, pretty high G2/3 rates #ESMO26 #ESMOAmbassadors
MeDucation@MeDucationai 引用@FOURLIGHT-1 | ESMO 2026 Can CDK4 inhibition work after CDK4/6 progression? 1. Population: 263 patients with HR+/HER2− advanced breast cancer after prior CDK4/6 inhibitor. 2. Arms: Atirmociclib + fulvestrant vs investigator’s choice (fulvestrant or everolimus + exemestane). 3. Median PFS: 9.4 vs 6.6 months (HR 0.60). 4. ORR: 19.3% vs 11.3%. 5. Clinical benefit ≥24 weeks: 61.9% vs 46.0%. 6. Safety: Neutropenia 46.4%; leukopenia 32.8%; treatment-related discontinuation 4%. 7. Take-home: Promising phase II PFS benefit. OS immature; phase III confirmation needed. Ref: Giordano A, et al. FOURLIGHT-1. ESMO 2026; Abstract 1842O. #ESMO26 #BreastCancer #MVOnco
Prof Andrew Wardley 🦋@AndrewWardley Breastcancer.org@Breastcancerorg OncologyEducation@OncEd Nurullah İlhan,MD@drnurullahilhan ScienceLink@sciencelinkonco Mirrors of Medicine@mirrorsmed Giampaolo Bianchini@BianchiniGP Pablo Jara Martin@pablojaramartin Yakup Ergün@dr_yakupergun Dana-Farber News@DanaFarberNews Annals of Oncology@Annals_Oncology