Study | Number of AD patients | Number of non-AD patients | Number of control patients | CSF biomarkers | Optimal cut-off* | Sensitivity % (95% CI)** | Specificity % (95% CI)** | AUC (95% CI) | SL (p value)# |
---|---|---|---|---|---|---|---|---|---|
Shoji et al. [12] | 55 | 68 | 34 | Aβ42 | 158.6 fmol/mL | – | – | – | – |
Aβ42/40 ratio## | 0.078## | 51 | 82 | – | NP | ||||
Lewczuk et al. [13] | 22 | 11 | 35 | Aβ42 | 550 pg/mL | 100 | 80 | 0.923 | – |
Aβ42/40 ratio | 9.75 | 95.2 | 88.4 | 0.944 | NP | ||||
Spies et al. [22] | 69 | 69 | 47 | AD vs controls | |||||
16 DLB | Aβ42 | – | 93 | 87 | 0.949 | – | |||
27 FTD | Aβ42/40 ratio | – | 93 | 87 | 0.947 | NP | |||
26 VaD | AD vs non-AD | ||||||||
Aβ42 | – | 83 | 74 | 0.811 | NP | ||||
Aβ42/40 ratio | – | 85 | 85 | 0.903 | |||||
Hertze et al. [32] | 94 | 166 (MCI) 29 (DD) | 38 | AD vs controls | |||||
Aβ42 MSD | < 523 | 73 | 89 | 0.88 (0.82–0.93) | – | ||||
Aβ42 MSD/40 ratio | < 0.069 | 93 | 86 | 0.91 (0.86–0.95) | NP | ||||
Aβ42 MSD/38 ratio | < 0.37 | 87 | 82 | 0.89 (0.83–0.93) | NP | ||||
MCI-AD vs MCI | |||||||||
Aβ42 MSD | < 523 | 67 | 71 | 0.73 (0.66–0.80) | – | ||||
Aβ42 MSD/40 ratio | < 0.069 | 85 | 71 | 0.86 (0.79–0.91) | NP | ||||
Aβ42 MSD/38 ratio | < 0.37 | 88 | 71 | 0.85 (0.79–0.91) | NP | ||||
Gabelle et al. [14] | 52 | 34 | 42 | AD vs FTD | |||||
Aβ42 | > 464 | 79 | 62 | 0.75 | – | ||||
Aβ42/40 ratio | ≤11.1 | 79 | 76 | 0.85 | n.s. | ||||
Aβ42/38 ratio | ≤2.00 | 88 | 86 | 0.87 | n.s. | ||||
Slaets et al. [16] | 80 69 (NP) 11 (AD+CVD) | 75 24 DLB (15 NP) 29 FTD (12 NP) 22 VaD (11 NP) | 30 | Aβ42 | 517 pg/mL | 81 | 59 | 0.747 (0.670–0.827) | – |
Aβ42/40 ratio | 0.057 | 81 | 60 | 0.749 (0.673–0.826) | NP | ||||
Nutu et al. [17] | 48 | 127 43 PD 33 PDD | |||||||
51 DLB | 107 | AD vs control | |||||||
Aβ42 | 444 ng/L | 94 | 72 | 0.871 (0.811–0.930) | -NP | ||||
Aβ42/40 ratio | 0.125 | 92 | 79 | 0.871 (0.801–0.933) | |||||
AD vs PDD | |||||||||
Aβ42 | 449 ng/L | 94 | 61 | 0.805 (0.704–0.905) | – | ||||
Aβ42/40 ratio | 0.150 | 90 | 81 | 0.910 (0.844–0.976) | NP | ||||
AD vs DLB | |||||||||
Aβ42 | 387 ng/L | 88 | 41 | 0.675 (0.570–0.780) | – | ||||
Aβ42/40 ratio | 0.115 | 90 | 57 | 0.759 (0.664–0.853) | NP | ||||
Baldeiras et al. [18] | AD vs controls | ||||||||
Aβ42 | 534 pg/mL | 82 | 74 | 0.818 | – | ||||
Aβ40/42 ratio | 8.3 | 59 | 81 | 0.719 | NP | ||||
AD vs FTD | |||||||||
Aβ42 | 538 pg/mL | 70 | 82 | 0.791 | – | ||||
Aβ40/42 ratio | 5.4 | 59 | 87 | 0.778 | NP | ||||
Dumurgier et al. [19] | 367 (AD+ non-AD) | – | 0 | AD vs non-AD | |||||
Aβ42 | 737–836 pg/mL | 78 | 79 | 0.81 | – | ||||
Aβ42/40 ratio | 0.050–0.082 | 73 | 78 | 0.81 | NP | ||||
Struyfs et al. [23] | 100 | 50 | 50 | AD vs controls | |||||
50 (AD) | 17 (DLB) | Aβ42 | < 722 pg/mL | 98.0 | 74.0 | 0.874 | – | ||
50 (MCI-AD) | 17 (FTD) | Aβ42/40 ratio | < 0.1099 | 85.7 | 78.0 | 0.881 | NP | ||
16 (VaD) | Aβ42/38 ratio | < 0.269 | 81.6 | 82.0 | 0.858 | NP | |||
AD vs non-AD | |||||||||
Aβ42 | < 694 pg/mL | 95.9 | 40.0 | 0.686 | – | ||||
Aβ42/40 ratio | < 0.1215 | 93.9 | 50.0 | 0.782 | NP | ||||
Aβ42/38 ratio | < 0.2730 | 81.6 | 68.0 | 0.804 | NP | ||||
Bousiges et al. [25] | 70 | 55 | 15 | Pro-AD vs pro-DLB | |||||
31 (AD-d) | 20 (DLB-d) | Aβ42 | ≤ 730 ng/L | 84.6 | 71.4 | 0.84 (0.74–0.92) | – | ||
39 (pro-AD) | 35 (pro-DLB) | Aβ42/40 ratio | ≤ 0.0529 | 88.9 | 100 | 0.95 (0.83–0.99) | NP | ||
AD-d vs DLB-d | |||||||||
Aβ42 | ≤ 504 ng/L | 67.7 | 80 | 0.77 (0.63–0.88) | – | ||||
Aβ42/40 ratio | ≤ 0.0799 | 92.3 | 88.9 | 0.86 (0.64–0.97) | NP | ||||
Janelidze et al. [24] | Cohort 2 | Cohort 2 | Cohort 2 | AD vs MCI | |||||
75 (AD) | 62 (MCI) | 53 | Aβ42 | – | – | – | 0.817 (0.743–0.890) | – | |
35 (MCI-AD) | 34 (VaD) | Cohort 3 | Aβ42/40 ratio | – | – | – | 0.879 (0.823–0.936) | < 0.028 | |
Cohort 3 | 47 (DLB/PDD) | 328 | Aβ42/38 ratio | – | – | – | 0.856 (0.790–0.923) | < 0.222 | |
137 | 33 (FTD) | AD vs DLB/PDD | |||||||
Cohort 3 | Aβ42 | – | – | – | 0.583 (0.476–0.690) | – | |||
35 (DLB/PDD) | Aβ42/40 ratio | – | – | – | 0.792 (0.707–0.877) | < 0.001 | |||
128 (PD) | Aβ42/38 ratio | – | – | – | 0.796 (0.710–0.883) | < 0.001 | |||
AD vs VaD | |||||||||
Aβ42 | – | – | – | 0.698 (0.580–0.816) | – | ||||
Aβ42/40 ratio | – | – | – | 0.880 (0.814–0.946) | < 0.001 | ||||
Aβ42/38 ratio | – | – | – | 0.860 (0.786–0.935) | < 0.001 | ||||
AD vs non-AD | |||||||||
Aβ42 | – | – | – | 0.720 (0.651–0.788) | – | ||||
Aβ42/40 ratio | – | – | – | 0.863 (0.813–0.912) | < 0.001 | ||||
Aβ42/38 ratio | – | – | – | 0.863 (0.813–0.913) | < 0.001 | ||||
Lehmann et al. [26] | 342 | 562 | 0 | AD vs non-AD | |||||
Cohort 1 | Cohort 1 | Cohort 1 | |||||||
124 | 276 | Aβ42 | 500 pg/mL | – | – | 0.78 (0.734–0.818) | – | ||
Cohort 2 | Cohort 2 | Aβ42/40 ratio | 0.1 | – | – | 0.90 (0.865–0.926) | < 0.0001 | ||
218 | 286 | Cohort 2 | |||||||
Aβ42 | 700 pg/mL | – | – | 0.60 (0.553–0.641) | – | ||||
Aβ42/40 ratio | 0.05 | – | – | 0.77 (0.728–0.803) | < 0.0001 |