对mRNA-1273 COVID-19疫苗疗效临床试验的免疫相关分析
Peter B Gilbert1,2,3, David C Montefiori4, Adrian B McDermott5
1Vaccine and Infectious Disease Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA.
Science (New York, N.Y.)
|November 23, 2021
概括
COVID-19 疫苗接种者的中和抗体与对抗病毒的保护有关. 在冠状病毒疗效 (COVE) 试验中,较高的抗体水平与疫苗对COVID-19疾病的疗效增加有关.
科学领域:
- 免疫学
- 疫苗学
- 传染性疾病
背景情况:
- 冠状病毒疗效 (COVE) 第三阶段临床试验评估了COVID-19疫苗的疗效.
- 相关的风险和保护,包括抗体水平,对于疫苗的评估至关重要.
研究的目的:
- 评估中和结合抗体对COVID-19疾病的风险和保护的相关性.
- 在mRNA COVID-19疫苗接种者中建立抗体标位和疫苗疗效之间的关系.
主要方法:
- 在接种疫苗后的两个时间点测量中和结合抗体.
- 使用世界卫生组织国际单位对抗体值的标准化.
- 统计分析以确定免疫标志物与COVID-19风险/疫苗疗效之间的关联.
主要成果:
- 所有测量到的免疫标记都显示出与COVID-19风险的反向关联.
- 观察到抗体水平与疫苗疗效之间存在直接关联.
- 具体的50% 中和值 (10, 100, 1000) 相当于疫苗的估计疗效分别为78%,91% 和96%.
结论:
- 确定的免疫标记与COVID-19疫苗的保护相关.
- 这些发现支持使用抗体水平来指导mRNA和其他COVID-19疫苗的批准决定.
相关概念视频
01:29Immune Response Against Viral Pathogens
1.1K
The immune system's response to viral infections is a complex and coordinated process involving natural killer (NK) cells, T cell-mediated responses, and antibody-mediated responses.
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
NK Cells
NK cells are a crucial part of our innate immune system, acting as the first line of defense against viral infections. These cells can recognize and kill infected cells without prior exposure to the virus, effectively slowing down the spread of infection. Additionally, NK cells produce proinflammatory...
1.1K
01:13Bioequivalence studies: Biowaivers
15
Body:In certain scenarios, in vitro dissolution tests can replace in vivo bioequivalence studies. This is particularly true when a drug product, though available in varying strengths, maintains proportional similarity in its active and inactive ingredients. In such cases, the need for in vivo bioequivalence studies for lower strength variants may be waived, provided dissolution tests and in vivo studies on the highest strength yield satisfactory results.Bioequivalence can be indicated through...
15