NCT02770482

Amyloid Beta-peptide 1-40 and Alzheimer's Disease

Utility of Amyloid Beta-peptide 1-40 Measurement in the Diagnosis of Alzheimer's Disease

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 204 (actual)
• Sponsor: CHU de Reims · Academic / Other
• Sex: All
• Age: —
• Healthy volunteers: Accepted

Summary

The combined measurement of Ab42 and tau protein (total and phosphorylated) in the spinal fluid has been shown to be promising in the diagnosis of Alzheimer's disease (AD), and has justified its inclusion new diagnostic criteria. However, it can sometimes yield discordant results that are not discriminant (isolated variation in Ab42 or P-181 Tau). To answer this challenge, a new marker has been developed in recent years, namely amyloid beta-peptide 1-40 (Aβ40). This marker reflects the patient's total amyloid deposits and is used to calculate the Aβ42/Aβ40 ratio. This ratio measures the relative variation of Aβ42 as compared to the total amyloid burden. Literature data on this topic are sparse and to date, no report has been published evaluating the utility of this marker in the diagnostic strategy for AD.

Conditions

• Alzheimer Disease

Interventions

Type	Name	Description
BIOLOGICAL	spinal fluid collection

Timeline

• Start date: 2014-06-01
• Primary completion: 2018-03-14
• Completion: 2018-03-14
• First posted: 2016-05-12
• Last updated: 2026-01-21

Locations

1 site across 1 country: France