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Meta‐analysis of genetic variants associated with human exceptional longevity
Aging
|November 19, 2013
Summary
Genetic factors significantly influence exceptional longevity. A combination of genetic markers effectively distinguishes centenarians, suggesting a cumulative genetic effect on extreme aging and healthy lifespans.
Area of Science:
- Genetics
- Gerontology
- Biomedical Science
Background:
- Family studies indicate a strong genetic component to exceptional longevity.
- Few individual genetic variants meet genome-wide significance thresholds for this trait.
- Cumulative effects of multiple genetic variations may significantly influence longevity.
Purpose of the Study:
- To validate a previously identified genetic signature for exceptional longevity across multiple cohorts.
- To investigate the hypothesis that genetic influence on longevity increases with age.
- To identify biological pathways associated with extreme survival for therapeutic development.
Main Methods:
- Utilized genetic data from five centenarian studies (USA, Europe, Japan).
- Performed meta-analysis on a previously established set of 281 genetic markers.
- Compared genetic profiles of centenarians with non-centenarians.
Main Results:
- Many genetic variants in the signature were associated with survival to extreme ages in independent studies.
- The genetic signature showed effectiveness in differentiating centenarians, especially those aged 106+.
- Findings support the hypothesis of increasing genetic influence with advanced age.
Conclusions:
- The genetic signature for longevity is robust across diverse populations.
- These findings suggest genetic pathways that could be targeted to promote healthy aging.
- Identifying these pathways may lead to therapeutics for increasing healthy lifespans in the general population.
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