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Exome-Wide Association Study Identifies FN3KRP and PGP as New Candidate Longevity Genes
Guillermo G Torres1, Marianne Nygaard2,3, Amke Caliebe4
1Institute of Clinical Molecular Biology, Kiel University, University Hospital Schleswig-Holstein, Germany.
Summary
This study identified two new genes, fructosamine-3-kinase-related-protein (FN3KRP) and phosphoglycolate phosphatase (PGP), associated with human longevity. These genes may influence lifespan through metabolic pathways, offering new insights into the genetics of aging.
Area of Science:
- Genetics
- Gerontology
- Molecular Biology
Background:
- The genetic basis of human longevity remains largely unknown, with common variants explaining little of its heritability.
- Previous studies have primarily focused on intronic or regulatory regions, yielding limited insights into longevity's genetic underpinnings.
Purpose of the Study:
- To identify novel genetic variants and genes associated with human longevity.
- To investigate the role of coding variants in the genetic architecture of exceptional lifespan.
Main Methods:
- Conducted a chip-based exome-wide association study (EWAS) on 1248 German long-lived individuals (including 599 centenarians) and 6941 younger controls.
- Performed single-variant and gene-based analyses to assess common and rare coding variants.
- Validated findings in an independent French longevity cohort.
Main Results:
- Identified a significant association between the rs1046896 variant in fructosamine-3-kinase-related-protein (FN3KRP) and longevity, with the longevity allele correlating with increased FN3KRP expression.
- A gene-based analysis suggested phosphoglycolate phosphatase (PGP) as another potential longevity gene.
- Confirmed the previously reported longevity locus CDKN2B-AS1, with rs1063192 showing replication in the French cohort.
Conclusions:
- FN3KRP and PGP emerge as novel candidate genes influencing longevity through metabolic processes, specifically protein reverse glycation and glycerol-3-phosphate regulation.
- These findings contribute to understanding the genetic factors contributing to exceptional human lifespan.
- Further research into these genes could elucidate mechanisms of aging and inform interventions.
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