Journal
NATURE GENETICS
Volume 44, Issue 4, Pages 369-U170Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/ng.2213
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Funding
- Australian National Health and Medical Research Council (NHMRC) [241944, 389875, 389891, 389892, 389938, 442915, 442981, 496739, 496688, 552485, 613672, 613601, 1011506]
- US National Institutes of Health [AA07535, AA10248, AA014041, AA13320, AA13321, AA13326, DA12854, HHSN268200625226C]
- Australian Research Council (ARC) [DP0770096, DP1093502]
- Wellcome Trust [WT081682/Z/06/Z, WT083270]
- National Heart, Lung, and Blood Institute [HHSN268201100005C, HHSN268201100006C, HHSN268201100007C, HHSN268201100008C, HHSN268201100009C, HHSN268201100010C, HHSN268201100011C, HHSN268201100012C]
- XXX [R01HL087641, R01HL59367, R01HL086694]
- US National Human Genome Research Institute [U01HG004402]
- NIH Roadmap for Medical Research [UL1RR025005]
- MRC [MC_U106188470] Funding Source: UKRI
- Medical Research Council [MC_U106188470] Funding Source: researchfish
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We present an approximate conditional and joint association analysis that can use summary-level statistics from a meta-analysis of genome-wide association studies (GWAS) and estimated linkage disequilibrium (LD) from a reference sample with individual-level genotype data. Using this method, we analyzed meta-analysis summary data from the GIANT Consortium for height and body mass index (BMI), with the LD structure estimated from genotype data in two independent cohorts. We identified 36 loci with multiple associated variants for height (38 leading and 49 additional SNPs, 87 in total) via a genome-wide SNP selection procedure. The 49 new SNPs explain approximately 1.3% of variance, nearly doubling the heritability explained at the 36 loci. We did not find any locus showing multiple associated SNPs for BMI. The method we present is computationally fast and is also applicable to case-control data, which we demonstrate in an example from meta-analysis of type 2 diabetes by the DIAGRAM Consortium.
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