Neurology:临床前期和前驱认知阶段认知结果的临床相关变化: 对临床阿尔茨海默病试验的启示 

2022-09-03 Naomi MedSci原创

当在临床试验中使用认知作为结果时,确定认知测试评分中具有临床意义的变化至关重要。该最小的临床重要差异(MCID)可应用于临床实践或临床试验,以确定是否发生了临床相关的变化。

当在临床试验中使用认知作为结果时,确定认知测试评分中具有临床意义的变化是至关重要的。随着临床试验越来越多地采用新的认知测试组合,这一点尤其重要。近日,一项发表在Neurology上的研究试图使用基于锚和基于分布的方法为常用的认知测试建立最小的临床重要差异(MCID) ,其次要目标是调查最能预测临床痴呆评分盒总和(CDR-SB)的最小变化的复合认知测量。

方法: 在瑞典 BioFINDER 队列研究中,连续包括有和没有主观或轻微认知障碍(mCI)的认知未受损(CU)个体。计算了与 MMSE CDRSB ≥0.5或≥1.0变化相关的 MCID,ADAS-cog 延迟回忆10字列表,Stroop,字母 S 流利性,动物流利性,符号数字模式测试(SDMT)和创业测试(TMT) A 和 B 以及用于临床使用的三角 MCID 用于 CU,MCI 和淀粉样蛋白阳性 CU。为了研究最能预测 CDR-SB 变化≥0.5或≥1.0的认知测量,进行了 ROC 分析。

结果:

  • 该研究包括451名认知功能未受损的个体,90名主观认知功能下降的个体和361名无认知功能下降症状的个体(合并平均随访时间32.4个月,SD 26.8,范围12-96个月)和292名 MCI 患者(合并平均值) 随访时间19.2个月,SD 19.0,范围12-72个月)。
  • 在一系列认知测试结果上确定了潜在的三角形 MCID (认知未受损; MCI) : MMSE -1.5; -1.7,ADAS 延迟回忆1.4; 1.1,Stroop 5.5; 9.3,动物流利性: -2.8; -2.9,字母 S 流利性 -2.9; -1.8,SDMT -3.5; -3.8,TMT A 11.7; 13.0,TMT B 24.4; 20.1。
  • 对于淀粉样蛋白阳性的 CU,研究发现最好的预测复合认知测量包括性别,ADAS 的变化延迟回忆,MMSE,SDMT 和 TMT B。这产生了 AIC 130.5,AUC 为0.87(95% CI 0.79-0.94,灵敏度75% ,特异度88%)。

讨论: 该MCID 可应用于临床实践或临床试验,以确定是否发生了临床相关的变化。在临床前 AD 试验中,复合测量可以作为临床相关的认知测试结果。

文献来源:Choi SA, Lee H, Kim K, et al. Mortality, Disability and Prognostic Factors of Status Epilepticus: A Nationwide Population-Based Retrospective Cohort Study [published online ahead of print, 2022 Jul 14]. Neurology. 2022;10.1212/WNL.0000000000200912. doi:10.1212/WNL.0000000000200912

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    2023-01-07 yinhl1978
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    2022-09-03 ms1907128386112981

    当在临床试验中使用认知作为结果时,确定认知测试评分中具有临床意义的变化是至关重要的

    0

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    2022-09-03 ms9000000382086630

    学习

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