Gene- and age-informed screening for preclinical Alzheimer's disease trials.

ABSTRACT:

Introduction

Elevated β-amyloid is used to enroll individuals into preclinical Alzheimer's disease trials, but the screening process is inefficient and expensive. Novel enrichment methods are needed to improve efficiency of enrollment.

Methods

Alzheimer's disease incidence rates and a polygenic hazard score were used to create a gene- and age-defined ADAge. An ADAge cutpoint was chosen to optimally predict β-amyloid positivity among clinically normal Alzheimer's Disease Neuroimaging Initiative participants and applied to an independent Alzheimer's Disease Research Center validation cohort. The impact of ADAge enrichment on screening costs was evaluated in the Anti-Amyloid Treatment in Asymptomatic Alzheimer's Disease trial data.

Results

In the validation cohort, the A

SUBMITTER: Spencer BE 

PROVIDER: S-EPMC8906231 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature