FDA咨询小组支持默克公司的口服COVID-19药物,但无法确定是否对Omicron变种有效

2021-12-02 Allan MedSci原创

本周二,FDA咨询小组以13票对10票的投票结果,建议默克公司的口服抗病毒药物molnupiravir紧急使用授权以治疗COVID-19。

本周二,FDA咨询小组以13票对10票的投票结果,建议默克公司的口服抗病毒药物molnupiravir紧急使用授权以治疗COVID-19

III期MOVe-OUT试验显示,molnupiravir将住院和死亡的风险降低了约50%。然而,该分析基于大约一半的研究人群,而上周晚些时候发布的对所有1433名参与者的完整读数显示,与安慰剂相比,molnupiravir 的有效率为 30%。

在会议前发布的简报文件中,FDA审查人员得出结论,molnupiravir“总体有利”的风险收益状况支持紧急使用授权,尽管他们确实强调了孕妇或哺乳期妇女和儿科患者的“已知和可能未知的风险”。

在周二的会议上,FDA科学家指出,在动物研究中以非常高的剂量给药时,该药物会导致毒性和先天缺陷,总体数据表明,molnupiravir“对孕妇给药可能会造成胎儿伤害”。支持这种药物的小组成员Janet Cragan表示,即使有严格的限制,一些孕妇还是不可避免地会服用这种药物。

针对Omicron的不确定性:

默克也没有针对新的Omicron变体专门测试其药物,但表示根据其对其他病毒株的有效性,它应该具有一定的效力。尽管如此,这种不确定性还是让一些FDA咨询小组成员感到沮丧。

也有人担心molnupiravir通过在病毒基因组中诱导致死性突变来抑制SARS-CoV-2复制,可能使病毒发生突变,从而降低疫苗和治疗的有效性。默克公司尚无关于molnupiravir诱导突变的数据,但默克公司指出,与临床测试中的安慰剂组相比,molnupiravir组没有发现刺突蛋白发生异常变化的比率更高。

 

原始出处:

https://firstwordpharma.com/story/5452507

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    2022-08-16 xjy02
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    2021-12-02 ms4000000757243930

    临床次时

    0

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