functional analysis of the coronary heart disease risk locus on chromosome 21q22
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2017
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Abstract
Background. The coronary heart disease (CHD) risk locus on 21q22 (lead SNP rs9982601) lies within a “gene desert.” The aim of this study was to assess if this locus is associated with CHD risk factors and to identify the functional variant(s) and gene(s) involved. Methods. A phenome scan was performed with UCLEB Consortium data. Allele-specific protein binding was studied using electrophoretic mobility shift assays. Dual-reporter luciferase assays were used to assess the impact of genetic variation on expression. Expression quantitative trait analysis was performed with Advanced Study of Aortic Pathology (ASAP) and Genotype-Tissue Expression (GTEx) consortium data. Results. A suggestive association between QT interval and the locus was observed (rs9982601 p=0.04). One variant at the locus, rs28451064, showed allele-specific protein binding and its minor allele showed 12% higher luciferase expression (p = 4.82 × 10−3) compared to the common allele. The minor allele of rs9982601 was associated with higher expression of the closest upstream genes (SLC5A3 1.30-fold increase p = 3.98 × 10−5; MRPS6 1.15-fold increase p = 9.60 × 10−4) in aortic intima media in ASAP. Both rs9982601 and rs28451064 showed a suggestive association with MRPS6 expression in relevant tissues in the GTEx data. Conclusions. A candidate functional variant, rs28451064, was identified. Future work should focus on identifying the pathway(s) involved.
| Reference Key |
beaney2017diseasefunctional
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| Authors | ;Katherine E. Beaney;Andrew J. P. Smith;Lasse Folkersen;Jutta Palmen;S. Goya Wannamethee;Barbara J. Jefferis;Peter Whincup;Tom R. Gaunt;Juan P. Casas;Yoav Ben-Shlomo;Jacqueline F. Price;Meena Kumari;Andrew Wong;Ken Ong;Rebecca Hardy;Diana Kuh;Nicholas Wareham;Mika Kivimaki;Per Eriksson;Steve E. Humphries;UCLEB Consortium |
| Journal | international journal of psychology : journal international de psychologie |
| Year | 2017 |
| DOI |
10.1155/2017/1096916
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| URL | |
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