Variation and association to diabetes in 2000 full mtDNA sequences mined from an exome study in a Danish population

Shengting Li, Soren Besenbacher, Yingrui Li, Karsten Kristiansen, Niels Grarup, Anders Albrechtsen, Thomas Hempel Sparsø, Thorfinn Sand Korneliussen, Torben Hansen, Jun Wang, Rasmus Nielsen, Oluf Pedersen, Lars Bolund, Mikkel H Schierup

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Abstract

In this paper, we mine full mtDNA sequences from an exome capture data set of 2000 Danes, showing that it is possible to get high-quality full-genome sequences of the mitochondrion from this resource. The sample includes 1000 individuals with type 2 diabetes and 1000 controls. We characterise the variation found in the mtDNA sequence in Danes and relate the variation to diabetes risk as well as to several blood phenotypes of the controls but find no significant associations. We report 2025 polymorphisms, of which 393 have not been reported previously. These 393 mutations are both very rare and estimated to be caused by very recent mutations but individuals with type 2 diabetes do not possess more of these variants. Population genetics analysis using Bayesian skyline plot shows a recent history of rapid population growth in the Danish population in accordance with the fact that >40% of variable sites are observed as singletons.European Journal of Human Genetics advance online publication, 22 January 2014; doi:10.1038/ejhg.2013.282.
OriginalsprogEngelsk
TidsskriftEuropean Journal of Human Genetics
ISSN1018-4813
DOI
StatusUdgivet - 22 jan. 2014

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