RNF43 p.G659fs 通过 PI3K/AKT/mTOR 信号通路和 HLA-E 上调导致 MSI-high 结直肠癌中 NK 细胞功能障碍
RNF43 p.G659fs leads to natural killer cell dysfunction in MSI-high colorectal cancer through PI3K/AKT/mTOR signaling and HLA-E up-regulation.
CELL INTELLIGENCE · 肿瘤细胞治疗研究
肿瘤细胞治疗研究
英文原题:Less frequent intravenous dosing of nemvaleukin alfa in patients with advanced solid tumors: the phase 1/2 ARTISTRY-3 trial.
Less frequent intravenous dosing of nemvaleukin alfa in patients with advanced solid tumors: the phase 1/2 ARTISTRY-3 trial.
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更低频次的静脉注射 nemvaleukin 显示出药效学机制验证,且可耐受,并伴有一定程度的疾病稳定。
既往研究显示,在21天周期的第1–5天每日静脉给予nemvaleukin alfa(nemvaleukin,ALKS 4230),对经多线治疗的晚期实体瘤具有抗肿瘤活性,且安全性可管理。本研究报告开放标签I/II期ARTISTRY-3研究(NCT04592653)队列2结果,该队列评估了nemvaleukin较低频次静脉给药治疗晚期实体瘤的效果。
符合条件的患者在21天周期内接受递增剂量静脉nemvaleukin,给药方案为第1天、第1和8天,或第1和4天。主要终点为剂量限制性毒性(DLT)的发生率。
2022年4月至2024年6月,共52例患者接受nemvaleukin治疗,未报告DLT。大多数治疗相关不良事件(TRAE)为1–2级;6例患者(12%)发生3级TRAE,最常见为中性粒细胞减少。nemvaleukin暴露量随剂量递增而增加。观察到全血中NK细胞和CD8+ T细胞扩增,而调节性T细胞扩增很少。推荐的II期剂量为30 μg/kg,于第1和8天给药。未观察到客观缓解;16例(31%)患者疾病稳定,其中6例(12%)稳定持续3个月。治疗期间活检显示肿瘤微环境中NK细胞和CD8+ T细胞浸润增加。
较低频次静脉给予nemvaleukin可显示药效学机制证据,且具有良好耐受性,并使部分患者疾病稳定。
Intravenous (IV) nemvaleukin alfa (nemvaleukin, ALKS 4230) administered daily on days 1-5 in 21 day cycles demonstrated antitumor activity and manageable safety in heavily pretreated advanced solid tumors. We present results from cohort 2 of the open-label phase I/II ARTISTRY-3 (NCT04592653) study, which evaluated less frequent IV dosing of nemvaleukin in advanced solid tumors.
Eligible patients received escalating IV nemvaleukin doses in 21-day cycles on 3 schedules: day 1, days 1 and 8, and days 1 and 4. The primary endpoint was the incidence of dose-limiting toxicities (DLTs).
From April 2022 to June 2024, 52 patients received nemvaleukin. No DLTs were reported. Most treatment-related adverse events (TRAEs) were grade 1-2. Six patients (12%) experienced grade 3 TRAEs, the most common being neutropenia. Nemvaleukin exposure increased with escalating doses. Natural killer (NK) cell and CD8+ T-cell expansion in whole blood was observed, with minimal regulatory T-cell expansion. Nemvaleukin at 30 g/kg on days 1 and 8 was the recommended phase II dose. No objective responses were observed; 16 (31%) patients had stable disease (6 [12%] for 3 months). Increased tumor microenvironment infiltration of NK cells and CD8+ T-cells was observed in on-treatment biopsies.
Less frequent IV doses of nemvaleukin demonstrated pharmacodynamic proof of mechanism and were tolerable with some disease stabilization.
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