Abstract
INTRODUCTION: The established link between DNA methylation and pathophysiology of dementia, along with its potential role as a molecular mediator of lifestyle and environmental influences, positions blood-derived DNA methylation as a promising tool for early dementia risk detection.
METHODS: In conjunction with an extensive array of machine learning techniques, we employed whole blood genome-wide DNA methylation data as a surrogate for 14 modifiable and non-modifiable factors in the assessment of dementia risk in independent dementia cohorts.
RESULTS: We established a multivariate methylation risk score (MMRS) for identifying mild cognitive impairment cross-sectionally, independent of age and sex (P = 2.0 × 10-3). This score significantly predicted the prospective development of cognitive impairments in independent studies of Alzheimer's disease (hazard ratio for Rey's Auditory Verbal Learning Test (RAVLT)-Learning = 2.47) and Parkinson's disease (hazard ratio for MCI/dementia = 2.59).
DISCUSSION: Our work shows the potential of employing blood-derived DNA methylation data in the assessment of dementia risk.
HIGHLIGHTS: We used whole blood DNA methylation as a surrogate for 14 dementia risk factors. Created a multivariate methylation risk score for predicting cognitive impairment. Emphasized the role of machine learning and omics data in predicting dementia. The score predicts cognitive impairment development at the population level.
| Originalsprog | Engelsk |
|---|---|
| Tidsskrift | Alzheimer's & dementia : the journal of the Alzheimer's Association |
| Vol/bind | 20 |
| Udgave nummer | 10 |
| Sider (fra-til) | 6682-6698 |
| Antal sider | 17 |
| ISSN | 1552-5260 |
| DOI | |
| Status | Udgivet - okt. 2024 |