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Table 1 Baseline characteristics of patients in the SCarlet RoAD study

From: A phase III randomized trial of gantenerumab in prodromal Alzheimer’s disease

Variable

Intention-to-treat population (n = 797)

Placebo

(n = 266)

Gantenerumab 105 mg

(n = 271)

Gantenerumab 225 mg

(n = 260)

Age, years, mean (SD)

69.5 (7.5)

70.3 (7.0)

71.3 (7.1)

Education, years, mean (SD)

89.8%

93.0%

91.9%

Weight, kg, mean (SD)

12.6 (4.3)

12.9 (4.8)

12.1 (4.5)

APOE ε4 genotype, %a

69.8 (12.9)

70.5 (13.6)

70.1 (12.5)

 0ε4

29.7%

21.0%

38.5%

 1ε4

50.4%

41.0%

61.5%

 2ε4

19.9%

38.0%

Clinical scores

 CDR-SB, mean score (SD)

2.1 (1.0)

2.2 (1.0)

2.0 (0.9)

 ADAS-Cog 13, mean score (SD)

23.5 (7.2)

23.1 (6.9)

23.0 (6.2)

 FAQ, mean score (SD)

4.9 (4.3)

4.6 (3.9)

4.8 (4.3)

 FCSRT-Total Recall, mean score (SD)

29.3 (10.8)

28.3 (10.8)

30.5 (10.4)

 MMSE, mean score (SD)

25.7 (2.1)

25.7 (2.3)

25.7 (2.2)

CSF biomarkers

 Aβ42, pg/ml, mean (SD)

487.8 (170.4)

475.3 (142.2)

511.8 (172.0)

 t-tau, pg/ml, mean (SD)

556.3 (203.8)

563.2 (239.1)

544.5 (220.5)

 p-tau, pg/ml, mean (SD)

84.0 (31.4)

86.3 (39.5)

82.5 (34.2)

 Neurogranin, pg/ml, mean (SD)

474.8 (260.7)

500.5 (270.0)

484.9 (293.9)

  1. Abbreviations: ADAS-Cog Alzheimer’s Disease Assessment Scale–Cognitive subscale, APOE Apolipoprotein E, CDR-SB Clinical Dementia Rating Sum of Boxes, CSF Cerebrospinal fluid, FAQ Functional Activities Questionnaire, FCSRT Free and Cued Selective Reminding Test, MMSE Mini Mental State Examination
  2. aBy design, there were no APOE 2ε4 patients in the gantenerumab 225 mg arm