TABLE 3.
Summary of results
Study | CSF marker | Population (N) | Cognitive assessment and direction of relationship (![]() ![]() |
|
---|---|---|---|---|
Abu‐Rumeileh et al. (2018) | NfL | AD (60) | MMSE |
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FTD (141) |
BMDB |
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||
FAB |
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|||
MMSE | * | |||
Agnello et al. (2020) | Ng | AD (29) | MMSE |
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Alpha‐synuclein | AD (29) | MMSE | * | |
Alcolea et al. (2017) | NfL | FTD (249) | MMSE |
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Aschenbrenner et al. (2020) | NfL |
CU Aβ + (94) CU Aβ‐ (161) |
Global cognition composite | * |
Episodic memory composite |
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|||
Attention composite | * | |||
Bartos et al. (2011) | NfL | AD (25) | MMSE (derived from ACE‐CZ) | * |
ACE‐CZ | * | |||
PSP, FTD, CJD, CBS, WE (13) | MMSE (derived from ACE‐CZ) | * | ||
ACE‐CZ | * | |||
Begcevic et al. (2018) | NPTX1 |
Cohort 1 (58): MCI (8) Mild AD (11) Moderate AD (24) Severe AD (15) |
MMSE | * |
Cohort 2 (43): MCI (6) Mild AD (8) Moderate AD (16) Severe AD (15) |
MMSE | * | ||
NPTXR |
Cohort 1 (58): MCI (8) Mild AD (11) Moderate AD (24) Severe AD (15) |
MMSE | * | |
Cohort 2 (43): MCI (6) Mild AD (8) Moderate AD (16) Severe AD (15) |
MMSE | * | ||
Bendlin et al. (2012) | NfL | CU with family history of AD (43) | BVMT | * |
COWAT | * | |||
TMT‐A | * | |||
TMT‐B | * | |||
WAIS‐working memory index | * | |||
AVLT | * | |||
Bjerke et al. (2009) | NfL |
MCI‐SVD (9) MCI‐MD (15) MCI‐MCI (118) MCI‐AD (20) CU (52) |
MMSE | * |
Boiten et al. (2021) | NPTX2 | AD (20) | Global composite | * |
Memory composite | * | |||
Attention composite | * | |||
Executive function composite | * | |||
Language composite | * | |||
Visuospatial composite | * | |||
MMSE | * | |||
DLB (48) | Global composite |
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||
Memory composite | * | |||
Attention composite |
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|||
Executive function composite | * | |||
Language composite | * | |||
Visuospatial composite | * | |||
MMSE | * | |||
Bos et al. (2019) | NfL | Total Aβ + (465) | MMSE |
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Total Aβ‐ (305) | * | |||
AD (180) |
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|||
MCI (450) | * | |||
CU (140) | * | |||
Ng |
Total Aβ + (465) Total Aβ‐ (305) |
MMSE |
* |
|
AD (180) |
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|||
MCI (450) | * | |||
CU (140) | * | |||
Brinkmalm et al. (2014) | SNAP‐25 | AD (36) | MMSE |
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CU (33) | MMSE | * | ||
Bruno et al. (2020) | Alpha‐Synuclein | CU (19) | BSRT | * |
Ng | CU (19) | BSRT | * | |
Casaletto et al. (2017) | Ng | CU with family history of dementia (132) | AVLT |
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WAIS‐III symbol digit coding |
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|||
BNT | * | |||
WAIS‐III DSF | * | |||
WAIS‐III DSB | * | |||
Chatterjee, Del Campo, et al. (2018) | Contactin‐2 | Total sample (154) | MMSE |
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AD (106) | MMSE | * | ||
CU (48) | MMSE | * | ||
De Vos et al. (2016) | Ng | AD (50) | MMSE | * |
MCI (38) | MMSE | * | ||
De de Jong et al. (2007) | NfL | EAD (37) | MMSE | * |
AD (33) | MMSE | * | ||
DLB (18) | MMSE | * | ||
FTD (28) | MMSE | * | ||
Delaby et al. (2020) | NfL | CU (118) | MMSE |
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AD (116) | MMSE |
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||
FTD (56) | MMSE |
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||
DLB (37) | MMSE | * | ||
pDLB (26) | MMSE |
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||
PSP (12) | MMSE | * | ||
CBS (26) | MMSE | * | ||
Dhiman et al. (2020) | NfL |
Total sample (221) AD (28) MCI (34) CU (159) |
MMSE |
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Galasko et al. (2019) | Ng | Total AD, MCI, CU (193) |
CVLT immediate recall CVLT delayed recall |
|
Aβ/tau+ |
CVLT immediate recall CVLT delayed recall |
|
||
Aβ/tau‐ |
CVLT immediate recall CVLT delayed recall |
|
||
NPTX2 | Total AD, MCI, CU (193) |
CVLT immediate recall CVLT delayed recall |
|
|
Aβ/tau+ |
CVLT immediate recall CVLT delayed recall |
|
||
Aβ/tau‐ |
CVLT immediate recall CVLT delayed recall |
* |
||
SNAP‐25 | Total AD, MCI, CU (193) |
CVLT immediate recall CVLT delayed recall |
*
|
|
Aβ/tau+ |
CVLT immediate recall CVLT delayed recall |
*
|
||
Aβ/tau‐ |
CVLT immediate recall CVLT delayed recall |
* * |
||
Gifford et al. (2018) | NfL |
Early MCI (9) MCI (37) CU (65) |
PVLT List Total learning |
* |
Short delay free recall | * | |||
Short delay cued recall | * | |||
Long delay free recall | * | |||
Long delay cued recall |
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|||
Discrimination | * | |||
CU (65) |
PVLT List Total learning |
|
||
Short delay free recall |
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|||
Short delay cued recall |
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|||
Long delay free recall |
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|||
Long delay cued recall |
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|||
Discrimination |
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|||
Headley et al. (2018) | Ng |
MCI (193) |
Memory composite |
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Executive function composite |
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|||
CU (111) | Memory composite | * | ||
Executive function composite | * | |||
Total (304) | MMSE |
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||
ADAS‐cog |
|
|||
ADAS‐Cog13 |
|
|||
Memory composite |
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|||
Executive function composite | * | |||
Hellwig et al. (2015) | Ng | AD + MCI‐AD (53) | MMSE | * |
Non‐AD dementia + MCI‐o (43) | MMSE | * | ||
Hoglund et al. (2017) |
NfL |
CU Aβ‐ (43) | MMSE | * |
CU Aβ + (86) | MMSE | * | ||
Ng | CU Aβ‐ (43) | MMSE | * | |
CU Aβ + (86) | MMSE | * | ||
VILIP‐1 | CU Aβ‐ (43) | MMSE | * | |
CU Aβ + (86) | MMSE | * | ||
Jia et al. (2020) | Ng |
Discovery cohort AD (28) |
MMSE |
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Validation cohort (73) |
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|||
GAP‐43 |
Discovery cohort AD (28) |
MMSE |
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|
Validation cohort (73) |
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|||
SNAP‐25 |
Discovery cohort AD (28) |
MMSE |
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|
Validation cohort (73) |
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|||
Synaptotagmin‐1 |
Discovery cohort AD (28) |
MMSE |
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|
Validation cohort (73) |
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|||
Kirsebom et al. (2018) | Ng |
Aβ + MCI (20) Aβ + SCI (18) CU (36) |
MMSE | * |
CERAD word list test | * | |||
TMT‐A | * | |||
TMT‐B | * | |||
Kvartsberg, Duits, et al. (2015) | Ng | MCI (40) | MMSE | * |
Lee et al. (2008) | VILIP‐1 | AD (33) | MMSE |
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Lim et al. (2019) | NPTXR |
MCI (14) Mild AD (21) Moderate AD (43) Severe AD (30) |
MMSE |
|
Mattsson et al. (2016) |
NfL |
Aβ + AD, MCI, CU (262) | MMSE | * |
ADAS‐Cog11 |
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|||
Aβ‐ AD, MCI, CU (127) | MMSE |
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||
ADAS‐Cog11 |
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|||
Ng | Aβ + AD, MCI, CU (262) | MMSE | * | |
ADAS‐Cog11 | * | |||
Aβ‐ AD, MCI, CU (127) | MMSE | * | ||
ADAS‐Cog11 | * | |||
McGuire et al. (2015) | NfL |
HAD (3) ANI (15) MNCD (15) CU (15) |
WAIS‐III digit symbol | * |
WAIS‐III symbol search | * | |||
TMT‐A | * | |||
Story memory test | * | |||
Figure memory test | * | |||
WCST | * | |||
TMT‐B | * | |||
COWAT | * | |||
ANT | * | |||
WAIS‐III letter‐number sequencing | * | |||
PASAT | * | |||
pNfH |
HAD (3) ANI (15) MNCD (15) CU (15) |
WAIS‐III digit symbol |
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|
WAIS‐III symbol search |
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|||
TMT‐A |
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|||
Story memory test |
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|||
Figure memory test |
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|||
WCST | * | |||
TMT‐B | * | |||
COWAT | * | |||
ANT | * | |||
WAIS‐III letter‐number sequencing | * | |||
PASAT | * | |||
Meeter et al. (2016) | NfL | FTD with GRN, MAPT, C9orf72 mutation (101) | MMSE | * |
Meeter, Gendron, et al. (2018) | NfL | FTD with C9orf72 mutation (64) | MMSE |
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Presymptomatic carriers of C9orf72 mutation (25) | MMSE | * | ||
Total (89) | MMSE |
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||
Meeter et al. (2019) | NfL | svPPA (147) | BNT |
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ANT | * | |||
Letter fluency | * | |||
WAIS‐III DSF | * | |||
WAIS‐III DSB | * | |||
TMT‐A |
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|||
TMT‐B |
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|||
SCWT | * | |||
CDT | * | |||
AVLT | * | |||
CVLT | * | |||
CERAD word list test | * | |||
Rey complex figure test | * | |||
Meeter, Vijverberg, et al. (2018) | NfL | bvFTD (164) | MMSE | * |
FAB |
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|||
svPPA (36) | MMSE | * | ||
FAB | * | |||
nfvPPA (19) | MMSE | * | ||
FAB | * | |||
lvPPA (4) | MMSE | * | ||
FAB | * | |||
CBS (40) | MMSE |
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||
FAB | * | |||
PSP (58) | MMSE | * | ||
FAB | * | |||
Total sample (including FTD‐MND; | MMSE |
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||
FAB |
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|||
Mielke, Syrjanen, Blennow, Zetterberg, Skoog, et al. (2019) | NfL |
Dementia (7) MCI (83) |
Global composite | * |
Memory composite |
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|||
Language composite | * | |||
Attention composite | * | |||
Visuospatial composite | * | |||
CU (687) |
Global composite |
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||
Memory composite |
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|||
Language composite |
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Attention composite |
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|||
Visuospatial composite |
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|||
Total (777) | Global composite |
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||
Memory composite |
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Language composite |
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Attention composite |
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Visuospatial composite |
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|||
Ng |
Dementia (7) MCI (83) |
Global composite | * | |
Memory composite |
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|||
Language composite | * | |||
Attention composite |
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|||
Visuospatial composite | * | |||
CU (687) | Global composite | * | ||
Memory composite | * | |||
Language composite | * | |||
Attention function composite | * | |||
Visuospatial composite | * | |||
Total (777) | Global composite |
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||
Memory composite |
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|||
Language composite |
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|||
Attention composite | * | |||
Visuospatial composite |
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Mielke, Syrjanen, Blennow, Zetterberg, Vemuri, et al. (2019) | NfL |
MCI (15) CU (64) Total (79) |
Global composite | * |
Memory composite | * | |||
Language composite | * | |||
Attention composite | * | |||
Visuospatial composite | * | |||
Mouton‐Liger et al. (2020) | Nrg1 | AD (54) | MMSE |
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MCI‐AD (20) | MMSE |
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||
Total: AD (54) MCI‐AD (20) Non‐AD dementia (30) Non‐AD MCI (31) CU (27) |
MMSE |
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||
Oeckl et al. (2020) | Beta‐synuclein | Cohort 1: AD (64) | MMSE |
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Cohort 2: AD (40) | MMSE | * | ||
Cohort 3: AD (49) | MMSE | * | ||
Öhrfelt et al. (2016) | Synaptotagmin | Cohort 1: AD (17) | MMSE | * |
Cohort 2: AD (24) | MMSE | * | ||
Cohort 1: MCI‐AD (5) | MMSE | * | ||
Cohort 2: MCI‐AD (18) | MMSE | * | ||
Cohort 1: CU (17) | MMSE | * | ||
Cohort 2: CU (36) | MMSE | * | ||
Öhrfelt et al. (2019) | SNAP‐25 | Cohort 1: AD (17) | MMSE | * |
Cohort 2: AD (24) | MMSE | * | ||
Cohort 1: MCI‐AD (5) | MMSE | * | ||
Cohort 2: MCI‐AD (18) | MMSE | * | ||
Cohort 1: CU (17) | MMSE | * | ||
Cohort 2: CU (36) | MMSE | * | ||
Osborn et al. (2019) | NfL |
Early MCI (27) MCI (132) |
Episodic memory composite | * |
Executive function composite | * | |||
BNT | * | |||
ANT |
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WAIS‐IV coding | * | |||
DKEFS number sequencing | * | |||
Hooper visual organisation test | * | |||
CU (174) | Episodic memory composite |
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||
Executive function composite | * | |||
BNT | * | |||
ANT | * | |||
WAIS‐IV coding | * | |||
DKEFS number sequencing | * | |||
Hooper visual organisation test | * | |||
Total (333) | Episodic memory composite |
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||
Executive function composite | * | |||
BNT | * | |||
ANT |
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|||
WAIS‐IV coding | * | |||
DKEFS number sequencing | * | |||
Hooper visual organisation test | * | |||
Portelius et al. (2015) | Ng | AD (95) | MMSE | * |
ADAS‐cog | * | |||
pMCI (105) |
MMSE | * | ||
ADAS‐cog | * | |||
sMCI (68) |
MMSE | * | ||
ADAS‐cog | * | |||
CU (110) | MMSE | * | ||
ADAS‐cog | * | |||
Racine et al. (2016) | NfL |
MCI + CU (70) |
CPAL errors‐ visual memory |
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GMCT moves/sec ‐speed of visual processing |
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|||
GML errors | * | |||
GMR errors | * | |||
OCL accuracy | * | |||
ONB accuracy | * | |||
TWOB accuracy | * | |||
AVLT delayed |
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Logical memory delayed |
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|||
BVMT‐R delayed |
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|||
Rojas et al. (2018) | NfL | PSP (50) | RBANS | * |
Colour trails 1 | * | |||
Colour trails 2 |
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|||
Letter‐number sequencing |
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|||
Phonemic fluency | * | |||
Rolstad, Berg, et al. (2015) | NfL | Dementia‐ vascular (65) | Attention composite | * |
Learning/memory composite | * | |||
Visuospatial composite | * | |||
Language composite | * | |||
Executive function composite | * | |||
Dementia‐ non‐vascular (128) | Attention composite | * | ||
Learning/memory composite | * | |||
Visuospatial composite | * | |||
Language composite |
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|||
Executive function composite | * | |||
MCI‐ vascular (86) | Attention composite |
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||
Learning/memory composite | * | |||
Visuospatial composite | * | |||
Language composite | * | |||
Executive function composite |
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|||
MCI‐ non‐vascular (175) | Attention composite | * | ||
Learning/memory composite |
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|||
Visuospatial composite | * | |||
Language composite | * | |||
Executive function composite | * | |||
SCI‐ vascular (48) | Attention composite |
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||
Learning/memory composite | * | |||
Visuospatial composite |
![]() |
|||
Language composite | * | |||
Executive function composite |
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SCI‐ non‐vascular (120) | Attention composite | * | ||
Learning/memory composite | * | |||
Visuospatial composite | * | |||
Language composite | * | |||
Executive function composite | * | |||
Rolstad, Jakobsson, et al. (2015) | NfL | CU (71) | Memory composite | * |
Executive functions composite | * | |||
Visuospatial composite | * | |||
Attention composite | * | |||
Verbal functions composite | * | |||
Sancesario et al. (2020) | Ng | CU (30) | MMSE | * |
Sandelius et al. (2019) | GAP‐43 | AD (275) | MMSE | * |
MCI (84) | MMSE | * | ||
CU (43) | MMSE | * | ||
FTD (39) | MMSE | * | ||
DLB (27) | MMSE | * | ||
lvPPA (10) | MMSE | * | ||
svPPA (15) | MMSE | * | ||
PSP (18) | MMSE | * | ||
CBS (19) | MMSE | * | ||
Total sample (662; CU, MCI, AD, ALS, FTD, PD, PD‐MCI, PD‐dementia, DLB, lvPPA, svPPA, PSP, CBS, PCA) | MMSE |
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||
Sanfilippo et al. (2016) | Ng | AD (25) | MMSE |
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CAMCOG | * | |||
MCI (50) | MMSE | * | ||
CAMCOG | * | |||
MCI‐AD (36) | MMSE | * | ||
CAMCOG | * | |||
CU (44) | MMSE | * | ||
CAMCOG | * | |||
Santillo et al. (2019) | Ng | CU (20) | MCCB | * |
Scherling et al. (2014) | NfL |
Total: Asymptomatic FTD mutation carriers (8) bvFTD (45) nfvPPA (18) svPPA (16) CBS (17) AD (50) PSP (22) CU (47) |
MMSE | * |
Rey‐Osterrieth figure | * | |||
DSF | * | |||
DSB |
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TMT | * | |||
Stroop colour naming task |
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|||
BNT |
![]() |
|||
ANT |
![]() |
|||
CVLT |
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|||
Phonemic fluency |
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|||
bvFTD (45) | MMSE |
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||
Rey‐Osterrieth figure | * | |||
DSF | * | |||
DSB |
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|||
TMT | * | |||
Stroop colour naming task |
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|||
BNT | * | |||
ANT |
![]() |
|||
CVLT |
![]() |
|||
Phonemic fluency |
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|||
nfvPPA (18) | MMSE | * | ||
Rey‐Osterrieth figure | * | |||
DSF | * | |||
DSB | * | |||
TMT | * | |||
Stroop colour naming task | * | |||
BNT |
![]() |
|||
ANT | * | |||
CVLT | * | |||
Phonemic fluency | * | |||
Schindler et al. (2019) | Ng | Carriers of mutations in PSEN1, PSEN2, or APP (235) | DIAN cognitive composite |
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Mutation non‐carriers (145) | DIAN cognitive composite | * | ||
SNAP‐25 | Carriers of mutations in PSEN1, PSEN2, or APP (235) | DIAN cognitive composite |
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|
Mutation non‐carriers (145) | DIAN cognitive composite | * | ||
VILIP‐1 | Carriers of mutations in PSEN1, PSEN2, or APP (235) | DIAN cognitive composite |
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|
Mutation non‐carriers (145) | DIAN cognitive composite | * | ||
Sjogren et al. (2001) | NfL | Insignificant white matter changes (61; AD, SVD, CU) | MMSE |
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Extensive white matter changes (14; AD, SVD, CU) | MMSE | * | ||
Sjogren et al. (2000) | NfL | FTD (18) | MMSE |
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AD (21) | MMSE |
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Skillback et al. (2014) | NfL | EAD (223) | MMSE | * |
AD (1194) | MMSE |
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FTD (146) | MMSE | * | ||
DLB (114) | MMSE | * | ||
VaD (465) | MMSE | * | ||
MIX (517) | MMSE |
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||
PDD (45) | MMSE | * | ||
Dementia NOS (437) | MMSE | * | ||
Total (3103) | MMSE |
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Sun et al. (2016) | Ng |
ApoE ε4 carriers: AD (67) MCI (102) CU (27) |
MMSE |
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Swanson et al. (2016) | NPTX2 |
Total: AD (64) MCI (135) CU (86) |
MMSE |
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ADAS‐Cog11 |
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|||
Memory composite |
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Teitsdottir et al. (2020) | NfL |
AD CSF profile (28): SCI (2) MCI (9) AD (16) DLB (1) |
Verbal episodic memory composite |
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Non‐AD CSF profile (14): SCI (10) MCI (13) DLB (1) |
Verbal episodic memory composite | * | ||
van der Ende et al., (2020) | NPTX2 |
Symptomatic genetic FTD (54) |
MMSE |
![]() |
TMT‐B |
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|||
Phonemic verbal fluency | * | |||
Presymptomatic genetic FTD (106) | MMSE | * | ||
TMT‐B | * | |||
Phonemic verbal fluency | * | |||
van Steenoven et al. (2020) | NPTX2 | DLB (85) | MMSE |
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NPTXR | DLB (85) | MMSE |
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|
Wang (2019) | Ng | AD (81) | MMSE | * |
MCI (171) | MMSE | * | ||
CU (99) | MMSE | * | ||
Total (351) | MMSE |
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||
Wang, Zhou, and Zhang (2018) | SNAP‐25 |
AD (16) MCI (75) CU (55) |
MMSE |
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Wellington et al. (2016) | Ng | AD (100) | MMSE | * |
bvFTD (20) | MMSE | * | ||
svFTD (21) | MMSE | * | ||
DLB (13) | MMSE | * | ||
PSP (46) | MMSE | * | ||
CU (19) | MMSE | * | ||
Total (including PD, MSA, mood disorders) | MMSE |
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||
AD‐like biomarker profile (151) | MMSE | * | ||
Non‐AD‐like biomarker (109) | MMSE | * | ||
Xiao et al. (2017) | NPTX2 | AD (30) | MMSE | * |
DSS |
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|||
BNT | * | |||
Phonemic verbal fluency |
![]() |
|||
Semantic verbal fluency |
![]() |
|||
WCST |
![]() |
|||
Visual reproduction test |
![]() |
|||
Block design |
![]() |
|||
CDT | * | |||
CVLT |
![]() |
|||
Zetterberg et al. (2016) | NfL | AD (95) | MMSE |
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ADAS‐cog |
![]() |
|||
pMCI (101) | MMSE | * | ||
ADAS‐cog | * | |||
sMCI (91) | MMSE | * | ||
ADAS‐cog |
![]() |
|||
CU (110) | MMSE | * | ||
ADAS‐cog | * | |||
Zhang, Ng, et al. (2018) | VILIP‐1 | Aβ + AD, MCI, CU (83) | MMSE |
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Aβ‐ MCI, CU (38) | MMSE | * | ||
Zhang, Therriault, et al. (2018) | SNAP‐25 | AD (18) | MMSE | * |
ADAS‐cog | * | |||
sMCI (22) | MMSE | * | ||
ADAS‐cog | * | |||
pMCI (47) | MMSE | * | ||
ADAS‐cog | * | |||
CU (52) | MMSE | * | ||
ADAS‐cog | * |
Abbreviations: ACE‐CZ, Addenbrookes Cognitive Examination‐Czech Version; AD, Alzheimers disease; ADAS‐Cog, Alzheimer Disease Assessment Scale‐Cognitive Subscale; ALS, amyotrophic lateral sclerosis; ANI, asymptomatic neurocognitive impairment; ANT, animal naming test; ApoE, apolipoprotein E; AVLT, Rey auditory verbal learning Test; Aβ‐, amyloid beta negative; Aβ+, amyloid beta positive; BMDB, brief mental deterioration battery; BNT, Boston naming test; BSRT, Buschke selective reminding test; bvFTD, behaviour variant FTD; BVMT‐R, Brief visuospatial memory test‐revised; BVMT, brief visuospatial memory test; CAMCOG, Cambridge cognitive examination; CBS, corticobasal syndrome; CDT, clock drawing test; CERAD, consortium to establish a registry for Alzheimers disease; CJD, Creutzfeldt‐Jacob disease; COWAT, controlled oral word association test; CPAL, continuous paired associate learning; CU, cognitive unimpaired; CVLT, California verbal learning test; DIAN, dominantly inherited Alzheimer network; DKEFS, Delis‐Kaplan executive function system; DLB, dementia with Lewy bodies; DSB, digit span backwards; DSF, digit span forwards; DSS, digit symbol substitution; EAD, early‐onset Alzheimers disease; FAB, frontal assessment battery; FTD, frontotemporal dementia; GMCT, groton maze times chase test; GML, groton maze learning test; GMR, groton maze learning test delayed recall; HAD, HIV‐associated dementia; lvPPA, logopenic variant primary progressive aphasia; MCCB, MATRICS consensus cognitive battery; MCI‐AD, mild cognitive impairment due to Alzheimers disease; MCI‐o, mild cognitive impairment not due to Alzheimers disease; MCI, mild cognitive impairment; MIX, mixed dementia; MMSE, mini mental state examination; MNCD, mild neurocognitive disorder; MND, motor neuron disease; MSA, multiple system atrophy; NfL, neurofilament‐light; nfvPPA, non‐fluent variant primary progressive aphasia; Ng, neurogranin; NOS, not otherwise specified; OCL, one‐card learning; ONB, one‐back memory; PASAT, paced auditory serial addition test; PCA, posterior cortical atrophy; PD, Parkinsons disease; PDD, Parkinsons disease dementia; pDLB, prodromal dementia with Lewy bodies; pMCI, progressive MCI; pNfH, phosphorylated neurofilament heavy; PSP, progressive supranuclear palsy; PVLT, Philadelphia verbal learning test; RBANS, repeatable battery for the assessment of neuropsychological status; SCWT, stroop colour word test; sMCI, stable MCI; SVD, small vessel disease; svPPA, semantic variant primary progressive aphasia; TMT‐B, trail making test B; TMT‐A, trail making test A; TWOB, two‐back memory; VaD, vascular dementia; WAIS, Wechsler adult intelligence scale; WCST, Wisconsin card sorting test; WE, Wernicke's encephalopathy.