诺华旗下Secukinumab在银屑病临床研究中胜过依那西普

2013-07-11 fyc5078 dxy

诺华旗下Secukinumab的一项III期临床试验显示,这款抗体药物与安进/辉瑞的重磅炸弹级产品依那西普相比,在治疗斑块状银屑病方面更加有效。这项名为FIXTURE的临床试验由1300多名受试者参与,该试验将Secukinumab与依那西普进行了对比,结果显示经过12周的治疗之后,诺华这款药物的所有检测指标均达预期目标,并在两项关键疗效指标上超过其竞争对手依那西普,这两项指标为银屑病面积和严重程

诺华旗下Secukinumab的一项III期临床试验显示,这款抗体药物与安进/辉瑞的重磅炸弹级产品依那西普相比,在治疗斑块状银屑病方面更加有效。

这项名为FIXTURE的临床试验由1300多名受试者参与,该试验将Secukinumab与依那西普进行了对比,结果显示经过12周的治疗之后,诺华这款药物的所有检测指标均达预期目标,并在两项关键疗效指标上超过其竞争对手依那西普,这两项指标为银屑病面积和严重程度指数75(PASI 75)及研究者全球评估(IGA mod 2011)。

试验中,Secukinumab每周皮下给药150mg或300mg,连续给药5周,然后以每月150mg剂量给药。而依那西普常规给药方式为最初每周皮下注射两次,每次50mg,然后每周50mg。

依那西普在中度至重度斑块状银屑病治疗中处于主导地位,占有32%的市场份额,数据统计显示,其2011年的销售额达到45亿美元。依那西普之后,雅培生命的阿达木单抗显示出强劲的竞争实力,2011年这款药物已占据了大约29%的市场份额。

依那西普与阿达木单抗均为肿瘤坏死因子(TNF)抑制剂,而Secukinumab是通过阻断促炎性细胞因子白介素-17a(IL-17a)发挥作用。在这个领域,Secukinumab最直接的市场竞争对手与其说是依那西普和阿达木单抗,还不如说是强生的银屑病药物优特克单抗(Stelara),这款药物是一种抗IL-12及IL-23抗体,于2009年投放市场,其增长强劲,去年销售额首次突破10亿美元。优特克单抗在一项关键临床试验中超过依那西普。

诺华公司的全球研发主管Tim Wright表示说:“中度至重度斑块状银屑病患者中有40%至50%的患者对其当前的治疗不满意,所以患者在这方面对新的治疗药物有明显的医疗需求,以更快、更长久地缓解疼痛、痒及其它症状。”

Secukinumab的这项III期临床研究号称是目前为止在中度至重度斑块状银屑病方面最大规模的一项研究,其全部试验结果预计会在今年晚些时候的主要医学大会上发布。与此同时,诺华不仅对Secukinumab在银屑病方面进行开发,而且还在类风湿关节炎、强直性脊柱炎及多发性硬化症方面对其进行开发,但去年这款药物一项针对克罗恩氏病的临床研究没能显示出疗效。

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