2019ASCO:这些免疫肿瘤学靶标新秀值得关注

2019-05-31 林草 生物探索

一年一度的美国临床肿瘤学会(ASCO)年会将在美国芝加哥举行。作为世界上最大、最具影响力的肿瘤专业学术组织,ASCO每年召开的年会都汇集了众多世界一流的肿瘤学专家和与会者,探讨最前沿的临床肿瘤科研成果和肿瘤治疗技术。

一年一度的美国临床肿瘤学会(ASCO)年会将在美国芝加哥举行。作为世界上最大、最具影响力的肿瘤专业学术组织,ASCO每年召开的年会都汇集了众多世界一流的肿瘤学专家和与会者,探讨最前沿的临床肿瘤科研成果和肿瘤治疗技术。

在这一即将召开的肿瘤学盛会上,免疫疗法这个“香饽饽”再次成为ASCO的主角之一。除了“聚光灯下”的PD(L)-1抑制剂、CAR-T等明星疗法,以下这些新的免疫肿瘤学靶标也值得关注。

IDO抑制剂遭遇滑铁卢

2018年,Incyte与默沙东的Epacadostat/Keytruda在黑色素瘤III期临床遭遇了滑铁卢,这让IDO抑制剂的研发蒙上了阴影。

Epacadostat是Incyte研发的首个小分子药-IDO抑制剂,能与多种PD(L)-1抗体的联合使用,曾一度被业内看好用于治疗包括非小细胞肺癌、膀胱癌、黑色素瘤在内的多种实体瘤。

然而,2018年4月6日, Epacadostat 与默沙东的Keytruda联合疗法治疗黑色素瘤的III期大规模临床试验却宣告失败。

随着这一坏消息的到来,Incyte与其它几家PD(L)-1抗体的临床试验也继而缩减或终止。这给Epacadostat以及其他IDO抑制剂的开发将带来了更多不确定性,也给部分曾经寄希望于IDO抑制剂/PD(L)-1组合疗法的医生/癌症患者带来了无限惆怅。

免疫肿瘤学新靶标

虽然如此,针对癌症治疗的免疫抑制阻断或免疫促进方向的研究并未停止,许多初期和中期免疫信号通路的研究仍然在继续探索癌症治疗。

据Cancer Research Institute的一项最新数据显示,有1700个这类研究合作项目正在进行中。在2019 ASCO年会上,关于此类研究的最新结果和数据可能会陆续涌现。

近日,BIOPHARMA DIVE 网站也列出了即将会亮相2019ASCO年会的免疫肿瘤学靶标的“新起之秀”

1.靶标:STING (复合干扰素基因刺激因子)

类型: 抑制剂

Aduro 和诺华的ADU-S100:用于肿瘤内注射,适用于黑(色)素瘤等,但不适用于对身体内部深层肿瘤。

默沙东的MK-1454:与Keytruda联合使用对癌症具有中等程度疗效(据2018年欧洲肿瘤医学-ESMO会议报道)。

GSK 的GSK3745417:用于静脉注射,但仍处于低剂量试验阶段,最新研究结果和数据会在2019ASCO年会上呈现。

2.靶标:LAG-3 (淋巴细胞活化基因-3)

类型: 抑制剂

GSK的TSR-033:靶向LAG-3抗体产品

再生元的REGN 376 和Bristol-Myers的BMS-986016 均为PD(L)1抗体产品,最新研究结果和数会在ASCO年会上呈现。

F-Star 的FS118 具有靶向LAG-3和PD(L)-1 的双特异性抑制。

3.靶标:TIM-3 (T细胞免疫球蛋白和粘蛋白域-3)

类型: 抑制剂

Eli Lilly 的LY3321367,百济神州的BGB-A425,Symphogen的 SYM023,以及诺华的MBG453均为与PD(L)-1抗体联合使用的抑制剂产品,均处于临床I期试验阶段。

其中,Eli Lilly 的LY3321367其安全性测试数据已经获取,而其它几个公司产品还未进行安全性测试。

4.靶标:TGF-β

类型: 抑制剂

默克 KGaA 和GSK 的Bintrafuspalfa (bispecific PD-L1) 双功能融合蛋白免疫疗法主要针对非小细胞肺癌的治疗。除了可以阻断PD(L)-1之外,TGF-β抑制剂也能额外干扰肿瘤所造成的免疫抑制。

礼来的Galunisertib 是针对胰腺癌治疗的产品,已经进入临床II期试验阶段。

美国宾夕法尼亚大学的CART-PSMA-TGFβRD主要针对转移性去势抵抗性前列腺癌。

5.靶标:OX40

类型: 刺激因子

辉瑞的PF-04518600,Bristol-Myers的BMS 986178和 Incyte 的INCAGN1949 都仍处于非常初期的临床试验阶段,主要研究内容为使用剂量和生物学反应。

其中,BMS的试验将OX40和Opdivo 以及 Yervoy (ipilimumab)联合使用,结果显示免疫反应得到促进。

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    2020-02-20 quxin068
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    2019-06-02 zhaojie88
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    2019-06-01 133d9d3cm85暂无昵称

    学习了,谢谢

    0

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    2019-06-01 鱿鱼炒黄瓜

    值得分享!

    0

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