Confounding factors of Alzheimer's disease plasma biomarkers and their impact on clinical performance.

ABSTRACT:

Introduction

Plasma biomarkers will likely revolutionize the diagnostic work-up of Alzheimer's disease (AD) globally. Before widespread use, we need to determine if confounding factors affect the levels of these biomarkers, and their clinical utility.

Methods

Participants with plasma and CSF biomarkers, creatinine, body mass index (BMI), and medical history data were included (BioFINDER-1: n = 748, BioFINDER-2: n = 421). We measured beta-amyloid (Aβ42, Aβ40), phosphorylated tau (p-tau217, p-tau181), neurofilament light (NfL), and glial fibrillary acidic protein (GFAP).

Results

In both cohorts, creatinine and BMI were the main factors associated with NfL, GFAP, and to a lesser extent with p-tau. However, adjustment for BMI and creatinine had only minor effects in model

SUBMITTER: Pichet Binette A 

PROVIDER: S-EPMC10499000 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature