Whole-Genome Sequencing of a Healthy Aging Cohort.
Level 4 - case-series / case-control
Cross-sectional observational genomic sequencing study.
PubMed 27114037 · doi:10.1016/j.cell.2016.03.022
What was done
Whole-genome sequencing was conducted on individuals characterized by a healthy aging phenotype (disease-free aging without medical intervention) to evaluate associations with known longevity variants, rare pathogenic variants, and genetic susceptibility to age-associated diseases.
What was found
The abstract reports no numerical data, effect sizes, or p-values. Healthy aging was not associated with known longevity variants or with a lower rate of rare pathogenic variants. It was associated with reduced genetic susceptibility to Alzheimer and coronary artery disease, as well as suggestive variant associations related to protection against cognitive decline.
Why it matters
The findings suggest that disease-free healthy aging is a distinct genetic phenotype from extreme longevity, characterized in part by resistance to cognitive and cardiovascular decline.
Limits
The abstract explicitly notes the analysis is based on a relatively small cohort and requires independent replication. The exact sample size (n), participant characteristics, and numerical statistical results are not reported in the abstract.
Cited by
- supports Whole-genome sequencing of 1,400 individuals in the Welderly study (average age near 90 with no chronic illnesses) revealed almost no common protective genetic underpinnings.
- supports The criteria for the 'Welderly' is individuals aged 80 and older who have no major age-related diseases.