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Intracerebroventricular bivalent CAR T cells targeting EGFR and IL-13Rα2 in recurrent glioblastoma: a phase 1 trial
Nature Medicine ( IF 58.7 ) Pub Date : 2025-06-01 , DOI: 10.1038/s41591-025-03745-0
Stephen J. Bagley, Arati S. Desai, Joseph A. Fraietta, Dana Silverbush, Daniel Chafamo, Nelson F. Freeburg, Gayathri Konanur Gopikrishna, Andrew J. Rech, Ali Nabavizadeh, Linda J. Bagley, Jungmin Park, Danuta Jarocha, Rene Martins, Nicolas Sarmiento, Eileen Maloney, Lester Lledo, Carly Stein, Amy Marshall, Rachel M. Leskowitz, Julie K. Jadlowsky, Shane Mackey, Shannon Christensen, Bike Su Oner, Gabriela Plesa, Andrea Brennan, Vanessa Gonzalez, Fang Chen, David Barrett, Robert Colbourn, MacLean P. Nasrallah, Zissimos Mourelatos, Wei-Ting Hwang, Cecile Alanio, Donald L. Siegel, Carl H. June, Elizabeth O. Hexner, Zev A. Binder, Donald M. O’Rourke

Glioblastoma (GBM) is the most common primary brain cancer in adults and carries a median overall survival (OS) of 12–15 months. Effective therapy for recurrent GBM (rGBM) following frontline chemoradiation is a major unmet medical need. Here we report the dose escalation and exploration phases of a phase 1 trial investigating intracerebroventricular delivery of bivalent chimeric antigen receptor (CAR) T cells targeting epidermal growth factor receptor (EGFR) epitope 806 and interleukin-13 receptor alpha 2 (IL-13Rα2), or CART-EGFR-IL13Rα2 cells, in patients with EGFR-amplified rGBM. Primary endpoints included dose-limiting toxicity, determination of the maximum tolerated dose and recommended dose for expansion, and occurrence of adverse events. Secondary endpoints included objective radiographic response, duration of response, progression-free survival and OS. A total of 18 patients received CART-EGFR-IL13Rα2 cells. The maximum tolerated dose was determined to be 2.5 × 107 cells. Of the 18 patients, 10 (56%) experienced grade 3 neurotoxicity; none had grade 4–5 neurotoxicity. Of 13 patients, 8 (62%) with measurable disease at the time of CAR T cell infusion experienced tumor regression, with one confirmed partial response by Modified Response Assessment in Neuro-Oncology criteria (objective radiographic response, 8%; 90% confidence interval, 0–32%) and one patient with ongoing durable stable disease lasting over 16 months. Median progression-free survival was 1.9 months (90% confidence interval, 1.1–3.4 months), and median OS was not yet reached at the time of data cut-off (median follow-up time, 8.1 months). These findings indicate that intracerebroventricular delivery of bivalent CART-EGFR-IL13Rα2 is feasible and appears safe. CART-EGFR-IL13Rα2 cells are bioactive and exhibit a signal of antitumor effect in rGBM. ClinicalTrials.gov registration: NCT05168423.



中文翻译:

复发性胶质母细胞瘤中靶向 EGFR 和 IL-13Rα2 的脑室内二价 CAR T 细胞:1 期试验

胶质母细胞瘤 (GBM) 是成人中最常见的原发性脑癌,中位总生存期 (OS) 为 12-15 个月。一线放化疗后复发性 GBM (rGBM) 的有效治疗是一项未满足的主要医疗需求。在这里,我们报告了一项 1 期试验的剂量递增和探索阶段,该试验研究了靶向表皮生长因子受体 (EGFR) 表位 806 和白细胞介素-13 受体 α 2 (IL-13Rα2) 或 CART-EGFR-IL13Rα2 细胞的二价嵌合抗原受体 (CAR) T 细胞在 EGFR 扩增的 rGBM 患者中的递送。主要终点包括剂量限制性毒性、最大耐受剂量和扩展推荐剂量的确定以及不良事件的发生。次要终点包括客观影像学反应、反应持续时间、无进展生存期和 OS。共有 18 例患者接受了 CART-EGFR-IL13Rα2 细胞。最大耐受剂量确定为 2.5 × 107 个细胞。在 18 例患者中,10 例 (56%) 出现 3 级神经毒性;没有人有 4-5 级神经毒性。在 13 名患者中,8 名 (62%) 在输注 CAR T 细胞时患有可测量疾病的患者经历了肿瘤消退,其中 1 名通过神经肿瘤学标准中的改良反应评估确认了部分反应(客观放射学反应,8%;90% 置信区间,0-32%)和 1 名持续持久稳定疾病持续超过 16 个月的患者。中位无进展生存期为 1.9 个月 (90% 置信区间,1.1-3.4 个月),在数据截止时尚未达到中位 OS (中位随访时间,8.1 个月)。这些发现表明,二价 CART-EGFR-IL13Rα2 的脑室内递送是可行的并且似乎是安全的。 CART-EGFR-IL13Rα2 细胞具有生物活性,并在 rGBM 中表现出抗肿瘤作用的信号。ClinicalTrials.gov 注册:NCT05168423。

更新日期:2025-06-02
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