A genome-wide association study of mitochondrial DNA copy number in two population-based cohorts
A genome-wide association study of mitochondrial DNA copy number in two population-based cohorts
复制标题
两个基于人群的队列中线粒体 DNA 拷贝数的全基因组关联研究
DOI:
10.1101/372177
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发表时间:
2018
期刊:
影响因子:
--
通讯作者:
Guyatt A
中科院分区:
文献类型:
--
作者:
Guyatt A
BackgroundMitochondrial DNA copy number (mtDNA CN) exhibits interindividual and intercellular variation, but few genome-wide association studies (GWAS) of directly assayed mtDNA CN exist.We undertook a GWAS of qPCR-assayed mtDNA CN in the Avon Longitudinal Study of Parents and Children (ALSPAC) and the UK Blood Service (UKBS) cohort. After validating and harmonising data, 5461 ALSPAC mothers (16–43 years at mtDNA CN assay) and 1338 UKBS females (17–69 years) were included in a meta-analysis. Sensitivity analyses restricted to females with white cell-extracted DNA and adjusted for estimated or assayed cell proportions. Associations were also explored in ALSPAC children and UKBS males.ResultsA neutrophil-associated locus approached genome-wide significance (rs709591 [MED24],β(change in SD units of mtDNA CN per allele) [SE] − 0.084 [0.016],p =1.54e−07) in the main meta-analysis of adult females. This association was concordant in magnitude and direction in UKBS males and ALSPAC neonates. SNPs in and aroundABHD8were associated with mtDNA CN in ALSPAC neonates (rs10424198,β[SE] 0.262 [0.034],p =1.40e−14), but not other study groups. In a meta-analysis of unrelated individuals (N= 11,253), we replicated a published association inTFAM(β [SE] 0.046 [0.017],p =0.006), with an effect size much smaller than that observed in the replication analysis of a previous in silico GWAS.ConclusionsIn a hypothesis-generating GWAS, we confirm an association betweenTFAMand mtDNA CN and present putative loci requiring replication in much larger samples. We discuss the limitations of our work, in terms of measurement error and cellular heterogeneity, and highlight the need for larger studies to better understand nuclear genomic control of mtDNA copy number.
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影响因子:
30.8
作者:
Bulik-Sullivan, Brendan K.;Loh, Po-Ru;Finucane, Hilary K.;Ripke, Stephan;Yang, Jian;Patterson, Nick;Daly, Mark J.;Price, Alkes L.;Neale, Benjamin M.
通讯作者:
Neale, Benjamin M.
影响因子:
20.3
作者:
Liu, Fei;Lee, Jae Y.;Guan, Jun-Lin
通讯作者:
Guan, Jun-Lin
影响因子:
5.2
作者:
Jones, RW;Ring, S;Golding, J
通讯作者:
Golding, J
影响因子:
3.5
作者:
Curran, Joanne E.;Johnson, Matthew P.;Blangero, John
通讯作者:
Blangero, John
影响因子:
7.7
作者:
Relton CL;Gaunt T;McArdle W;Ho K;Duggirala A;Shihab H;Woodward G;Lyttleton O;Evans DM;Reik W;Paul YL;Ficz G;Ozanne SE;Wipat A;Flanagan K;Lister A;Heijmans BT;Ring SM;Davey Smith G
通讯作者:
Davey Smith G