Resumen
Knowledge of the genetic basis of the type 2 diabetes (T2D)-related quantitative traits fasting glucose (FG) and insulin (FI) in African ancestry (AA) individuals has been limited. In non-diabetic subjects of AA (n = 20,209) and European ancestry (EA; n = 57,292), we performed trans-ethnic (AA+EA) fine-mapping of 54 established EA FG or FI loci with detailed functional annotation, assessed their relevance in AA individuals, and sought previously undescribed loci through trans-ethnic (AA+EA) meta-analysis. We narrowed credible sets of variants driving association signals for 22/54 EA-associated loci; 18/22 credible sets overlapped with active islet-specific enhancers or transcription factor (TF) binding sites, and 21/22 contained at least one TF motif. Of the 54 EA-associated loci, 23 were shared between EA and AA. Replication with an additional 10,096 AA individuals identified two previously undescribed FI loci, chrX FAM133A (rs213676) and chr5 PELO (rs6450057). Trans-ethnic analyses with regulatory annotation illuminate the genetic architecture of glycemic traits and suggest gene regulation as a target to advance precision medicine for T2D. Our approach to utilize state-of-the-art functional annotation and implement trans-ethnic association analysis for discovery and fine-mapping offers a framework for further follow-up and characterization of GWAS signals of complex trait loci.
| Idioma original | English |
|---|---|
| Páginas (desde-hasta) | 56-75 |
| Número de páginas | 20 |
| Publicación | American Journal of Human Genetics |
| Volumen | 99 |
| N.º | 1 |
| DOI | |
| Estado | Published - jul 7 2016 |
Nota bibliográfica
Publisher Copyright:© 2016 American Society of Human Genetics
Financiación
| Financiadores | Número del financiador |
|---|---|
| National Institutes of Health (NIH) | R01HL055673, R01DK078616, K24DK106414, R01DK089174, UL1RR025741, R00DK081350, R01DK079888, R21HL123677, R01DK097084, U01HG006378, M01RR010284, U01HG004402, P30DK063491, U01HG004603 |
| National Institutes of Health (NIH) | |
| National Heart, Lung, and Blood Institute (NHLBI) | R01HL087700 |
| National Heart, Lung, and Blood Institute (NHLBI) |
ODS de las Naciones Unidas
Este resultado contribuye a los siguientes Objetivos de Desarrollo Sostenible
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Good health and well being
ASJC Scopus subject areas
- Genetics
- Genetics(clinical)
Huella
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