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Genetics and genomics of human ageing Wheeler HE; Kim SKPhilos Trans R Soc Lond B Biol Sci 2011[Jan]; 366 (1561): 43-50Ageing in humans is typified by the decline of physiological functions in various organs and tissues leading to an increased probability of death. Some individuals delay, escape or survive much of this age-related decline and live past age 100. Studies comparing centenarians to average-aged individuals have found polymorphisms in genes that are associated with long life, including APOE and FOXOA3, which have been replicated many times. However, the associations found in humans account for small percentages of the variance in lifespan and many other gene associations have not been replicated in additional populations. Therefore, ageing is probably a highly polygenic trait. In humans, it is important to also consider differences in age-related decline that occur within and among tissues. Longitudinal data of age-related traits can be used in association studies to test for polymorphisms that predict how an individual will change over time. Transcriptional and genetic association studies of different tissues have revealed common and unique pathways involved in human ageing. Genomic convergence is a method that combines multiple types of functional genomic information such as transcriptional profiling, expression quantitative trait mapping and gene association. The genomic convergence approach has been used to implicate the gene MMP20 in human kidney ageing. New human genetics technologies are continually in development and may lead to additional breakthroughs in human ageing in the near future.|*Genome, Human[MESH]|Aged, 80 and over[MESH]|Female[MESH]|Humans[MESH]|Longevity/*genetics/physiology[MESH]|Male[MESH]|Multifactorial Inheritance[MESH]|Polymorphism, Genetic[MESH]|Transcription, Genetic[MESH] |
