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(2017) A low-frequency inactivating AKT2 variant enriched in the finnish population is associated with fasting insulin levels and type 2 diabetes risk Diabetes . Article ID db161329. ISSN 0012-1797
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Official URL: http://diabetes.diabetesjournals.org/content/early...
Related URL: http://dx.doi.org/10.2337/db16-1329
Abstract
To identify novel coding association signals and facilitate characterization of mechanisms influencing glycemic traits and type 2 diabetes risk, we analyzed 109,215 variants derived from exome array genotyping together with an additional 390,225 variants from exome sequence in up to 39,339 normoglycemic individuals from five ancestry groups. We identified a novel association between the coding variant (p.Pro50Thr) in AKT2 and fasting insulin, a gene in which rare fully penetrant mutations are causal for monogenic glycemic disorders. The low-frequency allele is associated with a 12% increase in Fasting plasma Insulin (FI) levels. This variant is present at 1.1% frequency in Finns but virtually absent in individuals from other ancestries. Carriers of the FI-increasing allele had increased 2-hour insulin values, decreased insulin sensitivity, and increased risk of type 2 diabetes (odds ratio = 1.05). In cellular studies, the AKT2-Thr50 protein exhibited a partial loss of function. We extend the allelic spectrum for coding variants in AKT2 associated with disorders of glucose homeostasis and demonstrate bidirectional effects of variants within the pleckstrin homology domain of AKT2.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Diabetes Association. |
| ID Code: | 106826 |
| Deposited On: | 27 Jun 2017 17:26 |
| Last Modified: | 27 Jun 2017 17:26 |
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