Table 1 Characteristics of participants from the validation cohort

From: Plasma MTBR-tau243 biomarker identifies tau tangle pathology in Alzheimer’s disease

 

Overall (n = 739)

CU (n = 110)

CU+ (n = 198)

MCI+ (n = 169)

AD+ (n = 134)

Other (n = 128)

Age, years

72.4 (9.32)

63.8 (11.5)

74.4 (8.41)

73.8 (7.56)

75.3 (7.41)

72.1 (8.14)

Women, n (%)

371 (50.2)

61 (55.5)

104 (52.5)

79 (46.7)

87 (64.9)

40 (31.3)

Education, years

12.8 (3.75) (n = 720)

13.4 (3.41) (n = 109)

13.0 (3.65) (n = 197)

12.7 (4.11) (n = 164)

12.2 (3.63) (n = 126)

12.9 (3.78) (n = 124)

APOE-ε4, n (%)

388 (52.5) (n = 664)

43 (39.1) (n = 101)

93 (47.0) (n = 139)

122 (72.2) (n = 168)

95 (70.9) (n = 132)

35 (27.3) (n = 124)

Aβ-PET, centiloids

41.5 (48.3) (n = 483)

−7.26 (5.98) (n = 83)

48.6 (38.3) (n = 131)

81.4 (38.9)

97.9 (36.7) (n = 19)

−1.69 (19.0) (n = 80)

Aβ positivity, n (%)

516 (69.8) (n = 732)

0 (0)

198 (100)

169 (100)

130 (97.0) (n = 130)

19 (14.8) (n = 125)

Tau-PET, Braak I–VI (SUVR)

1.23 (0.321) (n = 649)

1.08 (0.0757) (n = 104)

1.13 (0.154) (n = 175)

1.28 (0.300) (n = 144)

1.65 (0.471) (n = 105)

1.09 (0.0826) (n = 121)

Tau-PET positivity, n (%)

172 (23.3) (n = 649)

1 (0.9) (n = 104)

22 (11.1) (n = 175)

57 (33.7) (n = 144)

83 (61.9) (n = 105)

9 (7.0) (n = 121)

Plasma eMTBR-tau243 (fmol l−1)

2.18 (4.64)

0.0845 (0.0973)

0.520 (1.06)

2.32 (3.17)

8.01 (7.69)

0.244 (0.587)

Plasma %p-tau217 (%)

1.52 (1.24)

0.460 (0.112)

1.24 (0.662)

1.95 (1.06)

3.07 (1.37)

0.640 (0.349)

Plasma %p-tau205 (%)

0.517 (0.273)

0.287 (0.133)

0.437 (0.163)

0.628 (0.231)

0.813 (0.293)

0.383 (0.180)

MMSE

26.1 (4.60) (n = 720)

29.0 (1.37) (n = 108)

28.8 (1.29) (n = 194)

26.2 (2.88) (n = 162)

19.5 (5.43) (n = 129)

26.1 (3.55) (n = 127)

  1. Mean (s.d.) is shown unless otherwise specified. In the cases where some were missing, the final sample size is shown in parentheses. Aβ positivity was assessed using CSF Aβ42/40 or Aβ-PET using previously validated thresholds. Tau-PET positivity was assessed in the global region (Braak I–VI) using a previously validated cutoff (SUVR > 1.22). Participants classified as ‘other’ include: 18 PD or DLB, 6 PSP or CBS, 4 VaD, 2FTD, 86 MCI and 12 had another neurodegenerative dementia. SUVR, standardized uptake value ratio.