2025
Knockoff procedure improves susceptibility gene identifications in conditional transcriptome-wide association studies
Zhang X, Wang L, Zhao J, Zhao H. Knockoff procedure improves susceptibility gene identifications in conditional transcriptome-wide association studies. American Journal Of Human Genetics 2025 PMID: 40902598, PMCID: PMC12412983, DOI: 10.1016/j.ajhg.2025.08.007.Peer-Reviewed Original ResearchTranscriptome-wide association studyExpression quantitative trait lociGenome-wide association studiesGene-trait pairsFalse discovery rateAssociation studiesTranscriptome-wide association study approachTranscriptome-wide association study methodExpression quantitative trait loci dataGenes associated with complex traitsGenetic variantsGenome-wide association study summary statisticsSusceptibility genesGene-trait associationsSusceptibility gene identificationQuantitative trait lociParametric bootstrap samplingGene expression levelsGenomic regionsGenetic elementsComplex traitsGene identificationTrait lociFalse discovery rate levelKnockoff procedureHypermethylation of PM20D1 Is Associated With Carotid Bifurcation Intima‐Media Thickness in Dominican Republic Families
Dueker N, Zhao H, Gardener H, Kaur S, Dong C, Cabral D, Sacco R, Blanton S, Rundek T, Wang L. Hypermethylation of PM20D1 Is Associated With Carotid Bifurcation Intima‐Media Thickness in Dominican Republic Families. Journal Of The American Heart Association 2025, 14: e034033. PMID: 39791430, PMCID: PMC12054445, DOI: 10.1161/jaha.123.034033.Peer-Reviewed Original ResearchConceptsDifferentially Methylated RegionsMendelian randomization analysisCytosine nucleotidesCarotid intima-media thicknessExpression quantitative trait loci studiesRandomization analysisExpression quantitative trait lociIntima-media thicknessQuantitative trait loci studiesEpigenome-wide association studiesQuantitative trait lociTraditional vascular risk factorsBifurcation intima-media thicknessBlood-derived DNAGuanine nucleotide siteLinear mixed model analysisNucleotide sitesVascular risk factorsMeasures of atherosclerosisCarotid bifurcation intima-media thicknessTrait lociAssociation studiesNucleotide methylationLoci studiesGenetic variants
2024
HBI: a hierarchical Bayesian interaction model to estimate cell-type-specific methylation quantitative trait loci incorporating priors from cell-sorted bisulfite sequencing data
Cheng Y, Cai B, Li H, Zhang X, D’Souza G, Shrestha S, Edmonds A, Meyers J, Fischl M, Kassaye S, Anastos K, Cohen M, Aouizerat B, Xu K, Zhao H. HBI: a hierarchical Bayesian interaction model to estimate cell-type-specific methylation quantitative trait loci incorporating priors from cell-sorted bisulfite sequencing data. Genome Biology 2024, 25: 273. PMID: 39407252, PMCID: PMC11476968, DOI: 10.1186/s13059-024-03411-7.Peer-Reviewed Original ResearchConceptsMethylation quantitative trait lociQuantitative trait lociTrait lociMethylation dataFunctional annotation of genetic variantsAnnotation of genetic variantsGenetic variantsBisulfite sequencing dataEffects of genetic variantsBiologically relevant cell typesDNA methylation levelsCell typesFunctional annotationSequence dataComplex traitsMethylation datasetsRelevant cell typesMeQTLsMethylation levelsMethylation regulatorsReal data analysesLociVariantsMethylationDNAIntegration of expression QTLs with fine mapping via SuSiE.
Zhang X, Jiang W, Zhao H. Integration of expression QTLs with fine mapping via SuSiE. PLOS Genetics 2024, 20: e1010929. PMID: 38271473, PMCID: PMC10846745, DOI: 10.1371/journal.pgen.1010929.Peer-Reviewed Original ResearchConceptsExpression quantitative trait lociGenome-wide association studiesFine-mapping methodsLinkage disequilibriumBody mass indexFine-mappingExpression quantitative trait loci informationGenome-wide association study resultsExpression quantitative trait loci analysisPresence of linkage disequilibriumExternal reference panelGenetic fine-mappingQuantitative trait lociPosterior inclusion probabilitiesInclusion probabilitiesAlzheimer's diseaseExpression QTLsLD patternsComplex traitsCandidate variantsAssociation studiesTrait lociAssociation to causationReference panelFunctional variants
2023
eQTL studies: from bulk tissues to single cells
Zhang J, Zhao H. eQTL studies: from bulk tissues to single cells. Journal Of Genetics And Genomics 2023, 50: 925-933. PMID: 37207929, PMCID: PMC10656365, DOI: 10.1016/j.jgg.2023.05.003.Peer-Reviewed Original ResearchConceptsExpression quantitative trait lociBulk tissueIdentification of eQTLContext-dependent gene regulationCell typesQuantitative trait lociMost eQTL studiesSingle cellsComplex traitsGene regulationEQTL studiesFunctional genesTrait lociSpecific genesChromosomal regionsDynamic regulationGene expressionBiological processesDifferent tissuesGenetic variantsExpression levelsDisease mechanismsGenesRegulationRecent studiesRobustness of quantifying mediating effects of genetically regulated expression on complex traits with mediated expression score regression
Lin C, Liu W, Jiang W, Zhao H. Robustness of quantifying mediating effects of genetically regulated expression on complex traits with mediated expression score regression. Biology Methods And Protocols 2023, 8: bpad024. PMID: 37901453, PMCID: PMC10599978, DOI: 10.1093/biomethods/bpad024.Peer-Reviewed Original ResearchExpression quantitative trait lociGenome-wide association studiesComplex traitsGene expression regulationGenetic association signalsQuantitative trait lociScore regressionDisease-Associated VariantsSNP annotationGene annotationExpression regulationGWAS resultsTrait lociTrait heritabilityEQTL effectsAssociation signalsGene expressionAssociation studiesGene effectsSNP effectsHuman diseasesHeritabilityTraitsBiological realityAnnotation
2020
Leveraging functional annotation to identify genes associated with complex diseases
Liu W, Li M, Zhang W, Zhou G, Wu X, Wang J, Lu Q, Zhao H. Leveraging functional annotation to identify genes associated with complex diseases. PLOS Computational Biology 2020, 16: e1008315. PMID: 33137096, PMCID: PMC7660930, DOI: 10.1371/journal.pcbi.1008315.Peer-Reviewed Original ResearchConceptsExpression quantitative trait lociComplex traitsNovel lociIdentification of eQTLGene expressionTranscriptome-wide association study methodLinkage disequilibriumQuantitative trait lociAssociation study methodsCombined Annotation Dependent Depletion (CADD) scoresAnnotation-dependent depletion scoreExpression levelsDisease-associated genesEpigenetic annotationsEpigenetic informationFunctional annotationTrait lociGenetic variationGenesPrevious GWASLociGenetic effectsTraitsComplex diseasesGWASGenome-wide association study of smoking trajectory and meta-analysis of smoking status in 842,000 individuals
Xu K, Li B, McGinnis KA, Vickers-Smith R, Dao C, Sun N, Kember RL, Zhou H, Becker WC, Gelernter J, Kranzler HR, Zhao H, Justice AC. Genome-wide association study of smoking trajectory and meta-analysis of smoking status in 842,000 individuals. Nature Communications 2020, 11: 5302. PMID: 33082346, PMCID: PMC7598939, DOI: 10.1038/s41467-020-18489-3.Peer-Reviewed Original ResearchConceptsGenome-wide association studiesLarge genome-wide association studiesMillion Veteran ProgramAssociation studiesExpression quantitative trait lociQuantitative trait lociChromatin interactionsComplex traitsFunctional annotationTrait lociSequencing ConsortiumDozen genesSignificant lociSmoking phenotypesLociMultiple populationsNew insightsPhenotypeVeteran ProgramGenetic vulnerabilityGenesTraitsAnnotationEuropean AmericansConsortium
2015
eQTL mapping
Chen M, Yang C, Li C, Zhao H. eQTL mapping. 2015, 208-228. DOI: 10.1017/cbo9781107337459.016.Peer-Reviewed Original ResearchGenome-wide association studiesAssociation studiesPopulation genomic studiesQuantitative trait lociComplex diseasesEQTL mappingTrait lociGenomic studiesSingle nucleotide polymorphismsGenetic basisNumber variantsNucleotide polymorphismsPharmaceutical potentialUnique resourceGenomicsLociBroad impactHaplotypesPolymorphismIntroduction to statistical methods in genome-wide association studies
Yang C, Li C, Chung D, Chen M, Gelernter J, Zhao H. Introduction to statistical methods in genome-wide association studies. 2015, 26-52. DOI: 10.1017/cbo9781107337459.005.Peer-Reviewed Original ResearchGenome-wide association studiesAssociation studiesPopulation genomic studiesQuantitative trait lociComplex diseasesTrait lociGenomic studiesSingle nucleotide polymorphismsGenetic basisNumber variantsNucleotide polymorphismsPharmaceutical potentialUnique resourceGenomicsLociBroad impactHaplotypesStatistical methodsPolymorphismVariantsPharmacogenomics
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