Eur Urol:化放疗联合Nivolumab±Ipilimumab治疗肌层浸润性膀胱癌的安全性评估

2022-08-09 AlexYang MedSci原创

在治疗肌层浸润性膀胱癌中,假设ICI与CRT(iCRT)同时进行是安全的,并可能改善治疗效果,并对其进行了调查。

肌层浸润性膀胱癌(MIBC)的预后很差。在选定的患者中,化学放射治疗(CRT)的效果与根治性膀胱切除术相当。在根治性膀胱切除术前,行新辅助免疫检查点抑制剂(ICI)治疗的结果很有前景。

近期,来自荷兰的研究人员在《Eur Urol》杂志上发表文章,他们假设ICI与CRT(iCRT)同时进行是安全的,并可能改善治疗效果,并对其进行了调查

研究的目的是确定iCRT治疗MIBC的安全性。研究为多中心、1b期、开放标签、剂量递增设计,调查了非转移性(T2-4aN0-1)MIBC患者中,CRT联合三种ICI治疗方案的安全性。其中,26名患者接受了丝裂霉素/卡培他滨和20×2.75 Gy的膀胱治疗。研究人员在还患者队列(最多10名)中评估了耐受性。如果前六名患者中有两名或更少,或十名患者中有三名或更少出现剂量限制毒性(DLT),则认为所使用的治疗组合是安全的。

研究的干预措施为nivolumab 480毫克(NIVO480),nivolumab 3毫克/千克和ipilimumab 1毫克/千克(NIVO3 + IPI1),或nivolumab 1毫克/千克和ipilimumab 3毫克/千克(IPI3 + NIVO1)。主要终点是安全性。次要终点是反应率、无病生存、无转移生存(MFS)和总生存(OS)。

在NIVO480队列中,没有患者出现DLT。NIVO3 + IPI1 治疗队列中有2名患者出现DLT,即血小板减少(4级)和心力衰竭(5级)。IPI3 + NIVO1治疗队列中,6名患者中的3名出现DLT,并随后停用。在NIVO480、NIVO3+IPI1和IPI3+NIVO1组中,分别有0、3和5名患者发生≥3级的临床重大副作用事件(AE)。最常见的AE是免疫相关的反应和胃肠道反应。NIVO480的MFS和OS在2年内为90%,NIVO3 + IPI1在1年内为90%。研究的局限性包括缺乏集中的病理学和放射学审查,以及缺乏生物标志物分析。

不同治疗方案的副作用事件发生情况

综上所述,在这项iCRT的剂量探索研究中,nivolumab单药和nivolumab 3mg/kg与ipilimumab 1mg/kg的治疗方案是安全的

 

原始出处:

Ben-Max de Ruiter , Jons W van Hattum , Djoeri Lipman et al. Phase 1 Study of Chemoradiotherapy Combined with Nivolumab ± Ipilimumab for the Curative Treatment of Muscle-invasive Bladder Cancer. Eur Urol. Aug 2022

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    2022-09-24 snf701207
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    2023-04-10 tamgche
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