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Derivation and validation of an epigenetic frailty risk score in population-based cohorts of older adults.


ABSTRACT: DNA methylation (DNAm) patterns in peripheral blood have been shown to be associated with aging related health outcomes. We perform an epigenome-wide screening to identify CpGs related to frailty, defined by a frailty index (FI), in a large population-based cohort of older adults from Germany, the ESTHER study. Sixty-five CpGs are identified as frailty related methylation loci. Using LASSO regression, 20 CpGs are selected to derive a DNAm based algorithm for predicting frailty, the epigenetic frailty risk score (eFRS). The eFRS exhibits strong associations with frailty at baseline and after up to five-years of follow-up independently of established frailty risk factors. These associations are confirmed in another independent population-based cohort study, the KORA-Age study, conducted in older adults. In conclusion, we identify 65 CpGs as frailty-related loci, of which 20 CpGs are used to calculate the eFRS with predictive performance for frailty over long-term follow-up.

SUBMITTER: Li X 

PROVIDER: S-EPMC9450828 | biostudies-literature | 2022 Sep

REPOSITORIES: biostudies-literature

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Derivation and validation of an epigenetic frailty risk score in population-based cohorts of older adults.

Li Xiangwei X   Delerue Thomas T   Schöttker Ben B   Holleczek Bernd B   Grill Eva E   Peters Annette A   Waldenberger Melanie M   Thorand Barbara B   Brenner Hermann H  

Nature communications 20220907 1


DNA methylation (DNAm) patterns in peripheral blood have been shown to be associated with aging related health outcomes. We perform an epigenome-wide screening to identify CpGs related to frailty, defined by a frailty index (FI), in a large population-based cohort of older adults from Germany, the ESTHER study. Sixty-five CpGs are identified as frailty related methylation loci. Using LASSO regression, 20 CpGs are selected to derive a DNAm based algorithm for predicting frailty, the epigenetic fr  ...[more]

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