喜大普奔|纳武利尤单抗联合低剂量伊匹木单抗一线治疗中高危晚期肾细胞癌获欧盟委员会批准

2019-01-15 MedSci MedSci

2019年1月14日,百时美施贵宝(NYSE:BMY)宣布,纳武利尤单抗(欧狄沃)3 mg/kg联合伊匹木单抗1mg/kg (“低剂量”)方案已获欧盟委员会批准,用于中高危晚期肾细胞癌(RCC)患者的一线治疗。这是首个获欧盟批准针对该类患者的免疫肿瘤(I-O)联合治疗方案。“目前,不足50%转移性肾细胞癌患者的生存期能够超过两年,且几乎未见完全缓解案例,这些现状凸显了患者对肾细胞癌新疗法的迫切

2019年1月14日,百时美施贵宝(NYSE:BMY)宣布,纳武利尤单抗(欧狄沃)3 mg/kg联合伊匹木单抗1mg/kg (“低剂量”)方案已获欧盟委员会批准,用于中高危晚期肾细胞癌(RCC)患者的一线治疗。这是首个获欧盟批准针对该类患者的免疫肿瘤(I-O)联合治疗方案。

“目前,不足50%转移性肾细胞癌患者的生存期能够超过两年,且几乎未见完全缓解案例,这些现状凸显了患者对肾细胞癌新疗法的迫切需求。”法国古斯塔夫·鲁西癌症研究所(Gustave Roussy)泌尿生殖肿瘤委员会前主席、医学博士Bernard Escudier表示:“此次获批为欧盟患者提供了新的一线治疗选择。相较于舒尼替尼,这一免疫肿瘤(I-O)联合治疗方案的完全缓解率接近10%,总体生存率(OS)获得显著提高,且有更低的3级和4级不良反应。”

此次获批是基于CheckMate-214 III期临床研究的结果。该试验在按计划进行的中期分析后提前终止。分析显示,纳武利尤单抗和低剂量伊匹木单抗联合治疗可显著提高OS。与目前的标准治疗方案舒尼替尼相比,中高危患者的死亡风险降低了37%(HR 0.63; 99.8% CI: 0.44 to 0.89; p<0.0001)。无论PD-L1表达水平如何,均观察到OS获益。截止到目前,接受纳武利尤单抗联合低剂量伊匹木单抗治疗患者组的中位总生存期尚未达到(95% CI: 28.2个月到不可评估[NE]),而舒尼替尼治疗患者组的中位总生存期为25.9个月。

与此同时,纳武利尤单抗联合低剂量伊匹木单抗方案还显示出了更高的客观缓解率,达到41.6%(95% CI: 36.9 to 46.5; p<0.0001; n=177/425),舒尼替尼为26.5%(95% CI: 22.4 to 31.0; n=112/422)。纳武利尤单抗和低剂量伊匹木单抗联合治疗组的完全缓解率为9.4%,舒尼替尼组为1.2%。在应答患者中,接受纳武利尤单抗和低剂量伊匹木单抗联合治疗患者的中位缓解时间尚未达到(95% CI: 21.8个月到NE),舒尼替尼组为18.2个月(95% CI: 14.8个月到NE)。此外,纳武利尤单抗和低剂量伊匹木单抗联合治疗相比于舒尼替尼治疗,所发生的3或4级不良事件更少(65% vs 76%)。

“基于CheckMate-214临床研究的显著生存获益数据,欧盟委员会批准了纳武利尤单抗联合低剂量伊匹木单抗的治疗方案,这令我们非常欣喜。”百时美施贵宝公司首席商业官Chris Boerner表示:“这一获批将帮助我们进一步实现革新癌症治疗方式、提升患者生活质量并实现长期生存获益的目标。”

关于CheckMate-214

CheckMate-214是一项随机、开放标签的III期临床研究,旨在评估纳武利尤单抗 3 mg/kg 联合伊匹木单抗1 mg/kg对比舒尼替尼用于初治晚期肾细胞癌(RCC)患者的治疗情况。在中高危研究人群中,425例患者接受纳武利尤单抗3 mg/kg联合伊匹木单抗1 mg/kg治疗,每3周1次,连续用药4个周期后,序贯 纳武利尤单抗 3 mg/kg,每2周1次。422例患者接受舒尼替尼50mg治疗,每日1次,持续4周,休息2周后再继续下一周期。纳武利尤单抗和低剂量伊匹木单抗联合用药的推荐剂量为:纳武利尤单抗 3 mg/kg,随后是伊匹木单抗 1 mg/kg,在同一天分别静脉注射,每次注射时间在30分钟以上,每3周1次,共4次。在完成4次联合用药后,应每2周静脉给予纳武利尤单抗 240mg,每次30分钟以上,或每4周静脉给药480mg,每次60分钟以上,直至疾病进展或出现不可耐受的毒性。

该试验的复合主要疗效终点为中高危患者的总生存期,客观缓解率(完全缓解+部分缓解)和独立影像检查委员会(IRRC)确定的无进展生存期。该试验未考虑研究患者的PD-L1状态。

关于肾细胞癌

肾细胞癌(RCC)是成人最常见的肾脏癌症类型,全球年死亡人数超过14万。其中,肾透明细胞癌是肾细胞癌中最常见的类型,约占肾细胞癌患者总数的80%到90%。肾细胞癌的男性患者约为女性患者的两倍,以北美和欧洲地区的发病率为最高。在全球,已诊断的晚期或转移性肾癌的5年生存率为8%。

百时美施贵宝:推进肿瘤研究的发展

在百时美施贵宝,一切以患者为中心是我们行事的宗旨。我们的愿景是提高癌症患者的生活质量并获得长期生存。在转化科学的推动下,我们通过特有的多学科协作方式,运用在肿瘤学和免疫肿瘤学(I-O)研究领域的深厚科学经验,为患者提供个体化的创新治疗方案,以满足不同的需求。

我们的研究人员正在着力开发多样化且目标明确的药物研发管线,旨在针对不同的免疫系统信号通路,解决肿瘤、肿瘤微环境和免疫系统之间复杂和特定的相互作用。我们不仅寻求内部创新,更倡导与学术界、政府、患者组织和生物技术公司的交流合作。正如免疫肿瘤(I-O)治疗药物的不断创新一样,我们将持续助力患者,实现药物不断变革的承诺。

关于Opdivo®(欧狄沃TM)

欧狄沃TM是一种PD-1免疫检查点抑制剂,独特地利用人体自身的免疫系统来帮助机体恢复抗肿瘤免疫反应。这种通过利用人体自身免疫系统来抗击癌症的特性,使欧狄沃TM已成为多种肿瘤类型的重要治疗选择。

基于百时美施贵宝在I-O治疗领域的科学专长,欧狄沃TM拥有全球领先的研发项目,涵盖多种肿瘤类型的各期临床试验,包括III期临床试验。截至目前,欧狄沃TM的临床研发项目已有超过25,000名患者入组。欧狄沃TM的临床试验有助于加深理解生物标志物对患者治疗选择的潜在提示作用,特别是识别不同PD-L1表达水平的患者如何能够从欧狄沃TM中获益。

2014年7月,欧狄沃TM成为全球首个获得监管机构批准的PD-1免疫检查点抑制剂,目前欧狄沃TM已在超过65个地区获得批准,包括美国、欧盟、日本和中国。2015年10月,欧狄沃TM与伊匹木单抗联合治疗黑色素瘤成为首个获得监管机构批准的免疫肿瘤(I-O)药物联合疗法,目前已在超过50个地区获得批准,包括美国和欧盟。

关于百时美施贵宝和小野制药株式会社的合作

2011年,百时美施贵宝与小野制药株式会社(Ono)签署合作协议,获得在全球(除日本、韩国和台湾之外)开发和上市nivolumab的特许权,小野制药当时保留了对该化合物的所有权。2014年7月23日,百时美施贵宝与小野制药就多个免疫药物共同开发和商业化再次签署战略合作协议,包括单药治疗和联合疗法,以帮助解决日本、韩国和台湾癌症患者的需求。

注:纳武利尤单抗(nivolumab)在中国大陆仅获批用于治疗表皮生长因子受体(EGFR)基因突变阴性和间变性淋巴瘤激酶(ALK)阴性、既往接受过含铂方案化疗后疾病进展或不可耐受的局部晚期或转移性非小细胞肺癌NSCLC)成人患者。伊匹木单抗(ipilimumab)尚未在中国大陆获批上市。

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