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Table 7 Characteristics of published randomized controlled trials

From: Clinical trials of new drugs for Alzheimer disease: a 2020–2023 update

Author [Year];

Country

Selection criteria

Number of patients

(% male)

Age, year,

mean ± SD

Intervention

Duration

Follow up period

Outcome

Dyck et al. [2023]; United States of America

RCT; patients 50 to 90 years of age with early AD (MCI or mild dementia due to AD)

L: 859 (48.4)

P: 875 (47.0)

L: 71.4 ± 7.9

P: 71.0 ± 7.8

L: 10 mg of intravenous lecanemab per kilogram every 2 weeks

P: Placebo

18 months

(79 weeks)

91 weeks

(1) CDR-SB Score

(difference: − 0.45; 95% CI: -0.67 to − 0.23)

(2) Amyloid Burden on PET

(difference: − 59.1; 95% CI: -62.6 to − 55.6)

(3) ADAS-Cog14 Score

(MD: − 1.44; 95% CI: − 2.27 to -0.61)

(4) ADCOMS

(MD: -0.050; 95% CI: − 0.074 to − 0.027)

(5) ADCS-MCI-ADL Score

(MD: 2.0; 95% CI: 1.2 to 2.8)

(6) adverse events

(L: infusion-related reactions in 26.4% of participants and amyloid-related imaging abnormalities with edema or effusions in 12.6%.)

Tahami Monfared et al. [2023]; United States of America

RCT; the same group of patients from Dyck et al

L: 859 (48.4)

P: 875 (47.0)

L: 71.4 ± 7.9

P: 71.0 ± 7.8

L: 10 mg of intravenous lecanemab per kilogram every 2 weeks

P: Placebo

18 months

(79 weeks)

91 weeks

(1) quality-adjusted life-years

[L: 4.39 (4.27–4.50); P: 3.68 (3.60–3.77)]

(2) mean time to progression to AD dementia

[L: 8.64 (7.91–9.57); P: 5.69 (5.32–6.16)]

(3) years in institutional care

[L: 0.78 (0.69–0.87); P: 0.89 (0.80–0.98)]

(4) health outcomes

Salloway et al. [2021]; Australia, Canada, France, Spain, United Kingdom, and

the United States of America

RCT; participants known to have or at-risk for a DIAD mutation-60% asymptomatic

AG: 52 (60)

AS: 50 (42)

P: 40 (45)

AG: 46.0 ± 10.8

AS: 42.5 ± 9.5

P: 44.2 ± 9.6

AG: 225 mg of gantenerumab (subcutaneously, every 4 weeks) =  > 1,200 mg from year 4

AS: 400 mg of solanezumab (subcutaneously, every 4 weeks) =  > 1,600 mg from year 5

4–7 years

NA

(1) Digit Symbol scores

(2) MMSE scores;

(3) Logical Memory scores;

(4) ISLT Delayed Recall scores;

(5) CDR-SB scores;

(6) FAS scores;

(7) brain amyloid burden;

(8) CSF total Aβ42;

(9) CSF phospho-tau181;

(10) CSF total tau;

(11) CSF NfL

Bateman et al. [2018]; Australia, Canada, France, Spain, United Kingdom, and the United States of America

RCT; the same group of patients from Salloway et al

AG: 52 (60)

AS: 50 (42)

P: 40 (45)

AG: 46.0 ± 10.8

AS: 42.5 ± 9.5

P: 44.2 ± 9.6

AG: 225 mg of gantenerumab (subcutaneously, every 4 weeks) =  > 1,200 mg from year 4

AS: 400 mg of solanezumab (subcutaneously, every 4 weeks) =  > 1,600 mg from year 5

4–7 years

NA

(1) Cognitive composite performance;

(2) Proportional hypothetical treatment effects

  1. L lecanemab group; P placebo group
  2. DIAN-TU-001 mutation carriers: AG active gantenerumab group, AS active solanezumab group, P shared placebo group
  3. CDR-SB score Clinical Dementia Rating – Sum of Boxes, ADAS-Cog14 Alzheimer’s Disease Assessment Scale-Cognitive subscale 14, ADCOMS AD Composite Score;
  4. ADCS-MCI-ADL Score Alzheimer's Disease Cooperative Study – Activities of Daily Living Scale for use in Mild Cognitive Impairment, MMSE Mini-Mental State Examination;
  5. ISLT International Shopping List Test, FAS Functional Assessment Scale; CSF: cerebrospinal fluid, NfL Neurofilament light polypeptide