Associations between STR autosomal markers and longevity

Area of Science:

• Genetics
• Gerontology
• Population Studies

Background:

• Human lifespan is a complex trait influenced by multiple factors.
• Previous studies on short tandem repeats (STRs) and longevity have yielded contradictory results.
• The role of specific STRs, like HUMTHO1 and HUMCSF1PO, in modulating life expectancy requires further investigation.

Purpose of the Study:

• To investigate the association of HUMTHO1 and HUMCSF1PO STRs with longevity.
• To assess other autosomal STR markers for their association with human longevity in a northern Spanish population.
• To explore the genetic underpinnings of human longevity.

Main Methods:

• Genotyping of 21 autosomal microsatellite markers.
• Comparison of allele frequencies between 304 nonagenarians (cases) and 516 younger controls.
• Statistical analysis to identify significant associations between STRs and longevity.

Main Results:

• The study did not confirm previous associations between longevity and THO1 or CSF1PO loci.
• Significant associations were found between longevity and STR markers D12S391, D22S1045, and DS441.
• Allelic frequency distributions differed for 6 out of 21 STR markers between nonagenarians and controls.

Conclusions:

• The genetic architecture of human longevity is complex and likely influenced by numerous genomic loci.
• Specific STR markers, beyond those previously implicated, are associated with longevity in the studied population.
• Further research is needed to elucidate the comprehensive genetic landscape of human lifespan.