Genes of DNA repair proteins and lifetime

Abstract

Genes of DNA repair proteins are interesting from the point of view of involvement of formation of common diseases. We studied variability of 8 SNP in the six DNA repair proteins genes in different age cohorts of residents of Tomsk. For rs473297 (MRE11), age-dependent changes alleles and genotypes frequencies were identified: for the older age cohort of the population sample, differences in alleles and genotypes frequencies were recorded with both the younger cohort (p=0.04 and p=0.047, respectively) and long-livers (p=0.02 and p=0.047, respectively). Allele T rs473297 is associated, on the one hand - with longevity (p=0.02, due to genotypes TT and GT), on the other - with mortality from cardiac death under 55 years of age (only homozygotes TT, p=0.03). That is, rs473297 (MRE11) may be involved in determining lifetime through selective survival of carriers of different genotypes suffering from common diseases.