PD-1单抗Opdivo用作小细胞肺癌的维持免疫疗法,临床试验结果令人失望

2019-04-12 不详 MedSci原创

CheckMate 451研究纳入了834名在四个化疗周期后癌症未进展的广泛期小细胞肺癌(SCLC)患者。结果显示PD-1单抗Opdivo单用或联合使用均没有显着延长总体存活率。

CheckMate 451研究纳入了834名在四个化疗周期后癌症未进展的广泛期小细胞肺癌(SCLC)患者。结果显示PD-1单抗Opdivo单用或联合使用均没有显着延长总体存活率。

研究作者,美国亚特兰大埃默里大学Winship癌症研究所临床和转化审查委员会联合主席Taofeek Owonikoko教授说,这一发现"令人非常失望"。

但是,他补充说:"有一些迹象表明,与安慰剂相比,接受联合免疫疗法或单独使用Opdivo的患者癌症进展需要更长的时间。但这不是研究的主要终点,因此我们无法做出明确的结论。不过这一结果也证明了这种策略的治疗潜力,尤其是对免疫治疗有反应的患者。"

大约60-70%的SCLC患者在诊断时患有广泛的分布,也就意味着癌症已经扩散到肺和附近的淋巴结,并且不能用放射治疗。大多数患者对化疗有反应,但反应的持续时间通常很短,并且他们的癌症会在短时间内快速生长。

化疗后的标准方法是等到肿瘤生长后才进行干预,CheckMate 451的研究评价了是否早期化疗成功后,再给予维持免疫疗法可以提高整体存活率。

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