ESMO 2019|中国原研新抗原肿瘤疫苗新成果

2019-10-08 佚名 肿瘤资讯

欧洲肿瘤内科学会(ESMO)年会是欧洲最负盛名和最具影响力的肿瘤学会议,已成为转化研究、呈现实践变化数据和多学科讨论的卓越全球平台。ESMO 2019于2019年9月底在西班牙巴塞罗那盛大召开,会议围绕肿瘤治疗举办系列高级别专题性论坛。会议期间,来自中国天津市北辰医院的2项原创性研究成果:新抗原免疫治疗临床研究及机制探讨研究入选Poster Discussion,现场反响热烈。该研究也是迄今为止国

欧洲肿瘤内科学会(ESMO)年会是欧洲最负盛名和最具影响力的肿瘤学会议,已成为转化研究、呈现实践变化数据和多学科讨论的卓越全球平台。ESMO 2019于2019年9月底在西班牙巴塞罗那盛大召开,会议围绕肿瘤治疗举办系列高级别专题性论坛。会议期间,来自中国天津市北辰医院的2项原创性研究成果:新抗原免疫治疗临床研究及机制探讨研究入选Poster Discussion,现场反响热烈。该研究也是迄今为止国际上首个针对非小细胞肺癌NSCLC)患者的个体化新抗原肿瘤疫苗(PPV)与表皮生长因子受体酪氨酸激酶抑制剂(EGFR-TKI)联合治疗的研究性探索,结果的发表获得了现场专家学者的广泛热议。

肺癌靶向药物,特别是EGFR-TKI的出现,显着延长了非小细胞肺癌患者的生存期。临床应用中EGFR-TKI较易产生获得性耐药,耐药后患者如何接受有效治疗以改善生存期和生活质量是目前需要迫切解决的研究热点和难点。该项研究披露的数据结果显示,PPV对晚期EGFR突变的NSCLC患者安全、可行和具有潜在的临床获益性;此外,本研究指出PPV联合EGFR-TKI可能是一种比较可行的针对EGFR-TKI治疗失败的NSCLC患者的治疗方案。

该项研究由天津市北辰医院与天津亨佳生物、美国MD Anderson癌症研究中心联合开展。在24例患者中3例患者出现短暂的1级不良事件(疲乏2例、发烧1例、皮疹1例),未发现治疗相关的不良事件;1例完全缓解(CR),6例部分缓解(PR),9例疾病稳定(SD), 疾病控制率(DCR)达到67%(16/24),有效率达(ORR)到29%。EGFR-TKI耐药后在PPV治疗同时继续联合EGFR-TKI,其生存期相较7例PPV治疗前已停服EGFR-TKI的患者明显延长(中位OS: 13.8 vs. 7.6个月,P=0.038)。

免疫治疗与EGFR-TKI的联用有望开启NSCLC患者的免疫治疗新时代,同时该研究也推动了中国的创新性临床治疗在免疫治疗领域逐渐走进国际前沿。记者获悉,杜学明主任研究团队目前正在开展一项新抗原临床研究:个体化新抗原肽疫苗对实体瘤的Ⅰ期临床研究(ChiCTR-IIR-17010557,招募信息:天津市北辰医院肿瘤科,杜学明主任),期待该团队带来更好的研究成果。

杜学明,现任天津市北辰医院肿瘤科主任,从事肿瘤微创介入研究20余年,主要研究领域为肿瘤的血管及非血管介入治疗,手术量超2万台,从事个体化免疫治疗研究10余年,其中70%收治患者为肺癌,发表肿瘤微创介入、基因检测、新抗原相关研究论文多篇.

杜学明主任点评

目前新抗原肿瘤疫苗研究虽然很热,但是从整体来看还是一个很新的领域。在项目研究中我们检出了抗原肽的免疫原性及观察到患者的临床获益,这与以往报道的新抗原肿瘤疫苗治疗成果也比较一致。我们发现,肿瘤疫苗本身发挥免疫激活作用可能需要在特定的“场景”下使用,比如我们研究中提到的联合EGFR-TKI,通过靶向药调节肿瘤微环境来促进疫苗的免疫效果。并且目前已经针对其他实体瘤癌种开展了临床招募,争取可以发现更多的有效抗原表位,发现更多新抗原疫苗应用的有效“场景”。我们在研究中发现的两个候选高共有性的抗原表位,有可能会成为部分人群通用的新抗原靶点。此外,针对新抗原靶点通过疫苗作用后找到新抗原特异性的T细胞,通过筛选TCR序列及体外构建表达TCR-T后对患者进行过继性细胞回输免疫治疗,也是很有前景的肿瘤免疫治疗手段之一。在治疗性疫苗的临床研究里,如何突破“患者难获益”这一瓶颈,尚需业界的共同努力,探索之路仍然很长。

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    2019-12-26 liuhuangbo
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    2020-03-01 wgx306
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    2019-10-10 zhang92560
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