MRD / ctDNA / DTP — 从检测到治疗决策
腺苷轴是肿瘤免疫逃逸中的关键代谢通路:CD39与CD73序贯水解胞外具免疫原性的ATP生成腺苷,后者经A2AR等受体以cAMP信号强力抑制抗肿瘤免疫、重塑免疫抑制性微环境[1];缺氧、高细胞周转及CD39/CD73表达共同造就肿瘤内高腺苷环境,使其成为检查点抑制剂之外的补充靶点[6]。临床探索已在多个节点铺开:靶向CD39/CD73/A2AR的抗体与小分子已作为单药或联合anti-PD-1/PD-L1方案进入临床试验[1];A2AR拮抗剂在肾癌I期试验中可安全阻断腺苷信号,单药及联合抗PD-L1均观察到临床缓解[3];A2AR信号还限制NK细胞成熟[4]、抑制CAR T细胞功能[5]。而在通路起点,IPH5201作为阻断性抗CD39抗体,可阻止ATP水解为腺苷、恢复肿瘤患者T细胞的活化,并在人CD39敲入小鼠中增强ATP诱导性化疗药奥沙利铂的抗肿瘤活性[2]——但这类“抗CD39+化疗免疫”的联合证据长期停留在临床前层面[2]。
在AACR 2026年会上公布的一则消息,把这一策略带入围手术期临床场景:IPH5201靶向CD39,与化疗-免疫治疗在体外存在协同;MATISSE研究正是利用该协同,在新辅助化疗基础上加用围手术期IPH5201与durvalumab。公开资料显示,MATISSE即NCT05742607的II期研究,其队列1评价新辅助IPH5201联合durvalumab叠加标准化疗的安全性与疗效[7];本次公布的正是IPH5201联合durvalumab与铂类化疗的中期结果(摘要CT231,Barlesi等),定位为CD39与PD-L1双抑制[8]。设计逻辑与既往阐述一脉相承:受化疗处理的肿瘤细胞释放免疫刺激性ATP,阻断CD39有利于ATP累积与免疫激活[9]。据报道,研究人群为可切除NSCLC[10];据称该联合显示出更高的病理完全缓解率[11]。
就推进意义而言,MATISSE把“阻断CD39—保留ATP—增强化疗与免疫应答”的临床前逻辑[2],落到可切除肿瘤中“化疗+抗PD-L1+抗CD39”三联方案的人体检验上,与A2AR拮抗剂联合抗PD-L1的临床可行先例[3]在通路两端形成呼应。早期证据也提供了支点:IPH5201单药及联合用药的研究已见诸报道[12],且研究显示IPH5201可降低肿瘤内CD39酶活性,提示对靶酶的功能抑制在体内可以实现[13]。
当然,局限同样清楚:消息本身仅给出体外协同,未附疗效与安全性数据,据称的pCR优势也有待完整数据验证;加之通路存在CD73、A2BR等冗余节点[1],单点抑制CD39是否足以重塑微环境、围手术期的病理缓解能否转化为长期生存获益,仍需对照设计与更长随访来回答[6]。
- 1.CD39/CD73/A2AR pathway and cancer immunotherapy · Mol Cancer 2023
- 2.Blocking Antibodies Targeting the CD39/CD73 Immunosuppressive Pathway Unleash Immune Responses in Combination Cancer Therapies · Cell Rep 2019
- 3.Adenosine 2A Receptor Blockade as an Immunotherapy for Treatment-Refractory Renal Cell Cancer · Cancer Discov 2020
- 4.A2AR Adenosine Signaling Suppresses Natural Killer Cell Maturation in the Tumor Microenvironment · Cancer Res 2018
- 5.CRISPR/Cas9 mediated deletion of the adenosine A2A receptor enhances CAR T cell efficacy · Nat Commun 2021
- 6.Targeting adenosine for cancer immunotherapy · J Immunother Cancer 2018
- 7.NCT05742607 | IPH5201 and Durvalumab in Patients With ... · clinicaltrials.gov 2026
- 8.Abstract CT231: Dual CD39 and PD-L1 inhibition: Interim ... · aacrjournals.org 2026
- 9.1290TiP A phase II multicenter, open label, non- ... · annalsofoncology.org 2026
- 10.Resectable NSCLC IPH5201 Plus Durvalumab and Platinum- ... · ascopost.com 2026
- 11.Innate Pharma to Present MATISSE Phase 2 Interim ... · firstwordpharma.com 2026
- 12.IPH5201, an Anti-CD39 mAb, as Monotherapy or in ... · pubmed.ncbi.nlm.nih.gov 2026
- 13.IPH5201, an Anti-CD39 mAb, as Monotherapy or in ... · aacrjournals.org 2026
Shattering resistance in resectable NSCLC!
Fresh data from #AACR26 reveals the power of targeting the Adenosine pathway.
The Phase 2 MATISSE trial shows that adding the novel anti-CD39 antibody (IPH5201) to Durvalumab + Chemo achieves a profound 50% pCR in high PD-L1 ($\ge$50%) tumors!
By blocking CD39, we stop ATP degradation and lift immune suppression.
#NSCLC #LungCancer #Immunotherapy #Oncology #MedTwitter #AACR2026
Heat 11 · 6 likes · 0 replies · 5 reposts
Sukeshi Patel Arora, Lorena Fuentes, James Denno, Jennifer Moseley, Brittany M. Altermatt, Elizabeth Diaz, Joshua Ray Smith, Joel Michalek, Lei Zheng
Read the abstract →Mailin Li, Xen Ping Hoi, Jenying Deng, Junjun Zheng, Rabia Hashmani, Recep Bayraktar, Wei Qian, Jianying Zhou, Jian Guan, Kai Sun, Hanh Mai, Tiffany Sheu, Susan Haley, Mary Schwartz, Sunil Mathur, Stephen T. Wong, Fotis Nikolo, Keith Syson Chan, Polly Niravath, Jenny C. Chang
Read the abstract →Alberto Giovanni Leone, Alessandra Raimondi, Paolo Manca, Sabina Murgioni, Giovanni G. Cardellino, Alessandro Bittoni, Antonia Strippoli, Maria Bencivenga, Federica Palermo, Floriana Nappo, Silvio K. Garattini, Thereasa Rich, Gaia Rebecchi, Roberta Fazio, Camilla Damonte, Margherita Ambrosini, Cecilia Villa, Greta Gronchi, Sara Lonardi, Filippo Pietrantonio
Read the abstract →Fabrice Barlesi, Tibor Csoszi, Renata Duchnowska, Thomas Egenod, Laurent Greillier, Amanda Psyrri, Maurice Perol, Herve Lena, Agnes Boyer-Chammard, Veronia Todary, Julien Viotti, Pascale André, Carine Paturel, Markus Jensen
Read the abstract →Source: AACR 2026 现场信号 · x.com
