Jiayi Xu, PhD
Associate Research Scientist in PsychiatryCards
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Associate Research Scientist in Psychiatry
Biography
Dr. Jiayi Xu is an Associate Research Scientist in the Department of Psychiatry. She received her bachelor degrees in Nutrition from Cornell University and Shanghai Jiao Tong University in 2014, and her PhD in Human Nutrition with minors in Genomics and Epidemiology from Cornell University in 2019. Her current research focuses on neuropsychiatric disorders, in particular eating disorders and its relevant genetic, microbial, anthropometric and dietary factors.
Last Updated on February 29, 2024.
Appointments
Education & Training
- Postdoctoral Fellow
- Icahn School of Medicine at Mount Sinai (2022)
- PhD
- Cornell University, Nutrition with minors in Genomics and Epidemiology (2019)
- BS
- Shanghai Jiao Tong University, Nutrition (2014)
- BS
- Cornell University, Nutrition (2014)
Research
Publications
2025
Vitamin D supplementation in pregnant or breastfeeding women or young children for preventing asthma
Patchen B, Best C, Boiteau J, Solvik B, Vonderschmidt A, Xu J, Cohen R, Cassano P. Vitamin D supplementation in pregnant or breastfeeding women or young children for preventing asthma. Cochrane Database Of Systematic Reviews 2025, 2025: cd013396. PMID: 40792481, PMCID: PMC12341026, DOI: 10.1002/14651858.cd013396.pub2.Peer-Reviewed Original ResearchConceptsHigh-dose vitamin DDose vitamin DVitamin D supplementationEffect of vitamin D supplementationAirway infectionD supplementationChildhood asthmaAirway inflammationAdverse eventsVitamin DAtopic dermatitisBreastfeeding womenChildhood wheezingEarly childhood asthmaRandomised controlled studySystematic reviewCochrane riskAllergic sensitisationHigh-dose vitamin D supplementationRisk of childhood wheezeRisk of vitamin D deficiencyEfficacy of vitamin D supplementationMeta-analysesRisk ratioCochrane risk of bias toolPsychiatric disorders: teasing apart genetic similarities and differences
Xu J, Huckins L. Psychiatric disorders: teasing apart genetic similarities and differences. Trends In Genetics 2025, 41: 640-642. PMID: 40617757, PMCID: PMC12282334, DOI: 10.1016/j.tig.2025.06.012.Peer-Reviewed Original ResearchGenetics of Anorexia Nervosa Translation to Future Personalized Therapies
Xu J, Igudesman D, Huckins L, Bulik C. Genetics of Anorexia Nervosa Translation to Future Personalized Therapies. Psychiatric Clinics Of North America 2025, 48: 293-309. PMID: 40348419, DOI: 10.1016/j.psc.2025.01.007.Peer-Reviewed Original ResearchHarnessing precision nutrition to individualize weight restoration in anorexia nervosa
Rodriguez I, Huckins L, Bulik C, Xu J, Igudesman D. Harnessing precision nutrition to individualize weight restoration in anorexia nervosa. Journal Of Eating Disorders 2025, 13: 29. PMID: 39962541, PMCID: PMC11834214, DOI: 10.1186/s40337-025-01209-x.Peer-Reviewed Original ResearchWeight restorationPrecision nutritionAnorexia nervosaGut microbiotaIndividualized nutrition therapyPsychiatric comorbiditiesHabitual lifestyle behaviorsPrecision nutrition approachesDuration of illnessRestore microbial diversityNutrition therapySevere psychiatric disordersNutrition prescriptionKeystone taxaDietary interventionGenetic markersMicrobial diversityWeight outcomesMetabolic profileEffective treatmentDietary planNutritional approachFecal energy lossPatient recoveryMortality rate
2024
Evaluation of imputation performance of multiple reference panels in a Pakistani population
Xu J, Liu D, Hassan A, Genovese G, Cote A, Fennessy B, Cheng E, Charney A, Knowles J, Ayub M, Peterson R, Bigdeli T, Huckins L. Evaluation of imputation performance of multiple reference panels in a Pakistani population. Human Genetics And Genomics Advances 2024, 6: 100395. PMID: 39696820, PMCID: PMC11759560, DOI: 10.1016/j.xhgg.2024.100395.Peer-Reviewed Original ResearchGenome-wide association studiesReference panelImputation accuracyMultiple reference panelsPakistani individualsGenotype imputationAssociation studiesGenotype dataAncestry compositionEuropean individualsSample sizeTOPMedDiverse populationsPakistani populationImputationGenomeAncestryIndividualsGenotypesPopulationVariantsFuture panelsW22. EATING DISORDERS OVER THE WEIGHT SPECTRUM: DISSECTING GENETIC DIFFERENCES OF EATING DISORDERS, THINNESS, AND OBESITY
Xu J, Signer R, Hicks E, Johnston K, Termorshuizen J, Group P, Bulik C, Huckins L. W22. EATING DISORDERS OVER THE WEIGHT SPECTRUM: DISSECTING GENETIC DIFFERENCES OF EATING DISORDERS, THINNESS, AND OBESITY. European Neuropsychopharmacology 2024, 87: 112. DOI: 10.1016/j.euroneuro.2024.08.231.Peer-Reviewed Original ResearchTissue-specific mannerSignificant genesCC-GWASGenetic distanceConstitutional thinnessIdentified multiple risk variantsBonferroni significanceGenome-wide lociGenome-wide significanceMultiple risk variantsConcordant effect directionsBinge eatingClinical differencesEating DisordersGTEx v8S-PrediXcanAN-BGene associationsGenetic relationshipsRisk variantsRisk genesWeight-related traitsGenetic etiologyGenesDifferential expressionExploiting meta-analysis of genome-wide interaction with serum 25-hydroxyvitamin D to identify novel genetic loci associated with pulmonary function
Seo J, Gaddis N, Patchen B, Xu J, Barr R, O’Connor G, Manichaikul A, Gharib S, Dupuis J, North K, Cassano P, Hancock D. Exploiting meta-analysis of genome-wide interaction with serum 25-hydroxyvitamin D to identify novel genetic loci associated with pulmonary function. American Journal Of Clinical Nutrition 2024, 119: 1227-1237. PMID: 38484975, PMCID: PMC11130669, DOI: 10.1016/j.ajcnut.2024.03.007.Peer-Reviewed Original ResearchConceptsGenome-wide association studiesGenome-wide interactionsGWAS meta-analysesGenome-wide genotypingGenetic variant associationsPathway enrichment analysisGenetic architectureVariant associationsP38 MAPK pathwayAssociation studiesGene-environment interactionsBiological insightsGenetic variantsEnrichment analysisVariant signalsMeta-analyzed resultsMAPK pathwayBiological relevancePathwayForced Vital CapacityEvaluate interactive effectsMeta-analysesVariantsSmoking historyAssociated with FEV1 an
2023
Multi-ancestry study of the genetics of problematic alcohol use in over 1 million individuals
Zhou H, Kember R, Deak J, Xu H, Toikumo S, Yuan K, Lind P, Farajzadeh L, Wang L, Hatoum A, Johnson J, Lee H, Mallard T, Xu J, Johnston K, Johnson E, Nielsen T, Galimberti M, Dao C, Levey D, Overstreet C, Byrne E, Gillespie N, Gordon S, Hickie I, Whitfield J, Xu K, Zhao H, Huckins L, Davis L, Sanchez-Roige S, Madden P, Heath A, Medland S, Martin N, Ge T, Smoller J, Hougaard D, Børglum A, Demontis D, Krystal J, Gaziano J, Edenberg H, Agrawal A, Justice A, Stein M, Kranzler H, Gelernter J. Multi-ancestry study of the genetics of problematic alcohol use in over 1 million individuals. Nature Medicine 2023, 29: 3184-3192. PMID: 38062264, PMCID: PMC10719093, DOI: 10.1038/s41591-023-02653-5.Peer-Reviewed Original ResearchEating disorders: are gut microbiota to blame?
Xu J, Carroll I, Huckins L. Eating disorders: are gut microbiota to blame? Trends In Molecular Medicine 2023, 30: 317-320. PMID: 38040602, PMCID: PMC11009075, DOI: 10.1016/j.molmed.2023.11.007.Peer-Reviewed Original ResearchMULTI-ANCESTRY PHENOME-WIDE ASSOCIATION ANALYSES OF GENETIC LIABILITY FOR PROBLEMATIC ALCOHOL USE
Kember R, Johnson J, Johnston K, Lee H, Xu J, Davis L, Smoller J, Mallard T, Huckins L, Sanchez-Roige S, Kranzler H, Gelernter J, Zhou H. MULTI-ANCESTRY PHENOME-WIDE ASSOCIATION ANALYSES OF GENETIC LIABILITY FOR PROBLEMATIC ALCOHOL USE. European Neuropsychopharmacology 2023, 75: s10. DOI: 10.1016/j.euroneuro.2023.08.027.Peer-Reviewed Original Research
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