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Allakos的lirentelimab在嗜酸性胃肠道疾病的关键研究中令人失望

2021-12-26 Allan MedSci原创

该公司指出,虽然 ENIGMA 2 和 KRYPTOS 研究都达到了他们的主要终点,但未能改善患者症状。

近日,Allakos报告了两项试验的混合结果,这些试验评估了其实验药物 lirentelimab(AK002) 在患有嗜酸性粒细胞胃肠疾病的患者中的作用。该公司指出,虽然 ENIGMA 2 和 KRYPTOS 研究都达到了他们的主要终点,但未能改善患者症状。

III期 ENIGMA 2 研究:

ENIGMA 2 试验招募了 180 名嗜酸性胃炎和/或嗜酸性十二指肠炎患者,他们被随机分配接受静脉注射 lirentelimab 或安慰剂治疗 24 周。一线结果显示,84.6% 的 lirentelimab 组受试者达到了组织学分辨率,而安慰剂组为 4.5%。对于第二个主要终点,接受 lirentelimab 的患者在每日症状评分(TSS-6)上的平均得分变化为 -10,而安慰剂组的变化为 -11.5,两者无显著性差异。

Allakos 指出,组织学分辨率的定义为胃中有 ≤ 4 个嗜酸性粒细胞/高倍视野 (HPF)  和/或十二指肠中有≤15 个嗜酸性粒细胞/HPF,而第二个主要终点是通过自我报告的绝对值来衡量的改变腹痛、恶心、腹胀、早饱、腹绞痛、食欲不振等六种症状。

II/III 期 KRYPTOS 试验:

KRYPTOS 研究包括 276 名嗜酸性粒细胞性食管炎患者,他们随机接受静脉注射 lirentelimab或安慰剂治疗 24 周。一线结果显示,lirentelimab 高剂量组 87.9% 的受试者达到了组织学分辨率,低剂量组为 92.5%,安慰剂组为 10.9%。Allakos 补充说,对于另一个主要终点,接受高剂量 lirentelimab 的患者在吞咽困难症状问卷 (DSQ) 中报告的总症状评分绝对变化为 -17.4,低剂量组为-11.9,安慰剂组为 -14.6。

在这种情况下,组织学分辨率被定义为食管中≤6个嗜酸性粒细胞/HPF,而另一个主要终点是通过评估吞咽困难的 DSQ 的绝对变化来衡量的。 

Allakos 补充说,在两项研究中,都没有观察到 lirentelimab 的新安全性信号,在接受该药物治疗的患者中,多达 39% 的患者出现了轻度至中度的输液相关反应,而安慰剂组的这一比例为 14%。

 

原始出处:

https://firstwordpharma.com/story/5467215

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    2022-09-18 snf701207
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    2021-12-28 膀胱癌
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