Shared genetics of ADHD, cannabis use disorder and cannabis use and prediction of cannabis use disorder in ADHD
Nielsen T, Duan J, Levey D, Walters G, Johnson E, Thorgeirsson T, Werge T, Mortensen P, Stefansson H, Stefansson K, Hougaard D, Agrawal A, Gelernter J, Grove J, Børglum A, Demontis D. Shared genetics of ADHD, cannabis use disorder and cannabis use and prediction of cannabis use disorder in ADHD. Nature Mental Health 2024, 2: 1071-1083. DOI: 10.1038/s44220-024-00277-3.Peer-Reviewed Original ResearchAttention-deficit hyperactivity disorderCannabis use disorderCannabis useUse disorderPolygenic scoresComorbid cannabis use disorderStudies of attention-deficit hyperactivity disorderCross-disorder genome-wide association studySubstance-use disordersIncreased polygenic scoresBrain developmental stagesRisk genesCross-disorderConditions co-occurringPsychiatric disordersHyperactivity disorderGenome-wide significant lociSubstance useRare deleterious variantsCannabisDisordersSignificant lociDeleterious variantsSex-specific differencesBrainCross-ancestry genetic investigation of schizophrenia, cannabis use disorder, and tobacco smoking
Johnson E, Austin-Zimmerman I, Thorpe H, Levey D, Baranger D, Colbert S, Demontis D, Khokhar J, Davis L, Edenberg H, Di Forti M, Sanchez-Roige S, Gelernter J, Agrawal A. Cross-ancestry genetic investigation of schizophrenia, cannabis use disorder, and tobacco smoking. Neuropsychopharmacology 2024, 49: 1655-1665. PMID: 38906991, PMCID: PMC11399264, DOI: 10.1038/s41386-024-01886-3.Peer-Reviewed Original ResearchCannabis use disorderUse disorderPleiotropic lociCo-occurring substance useHeavy cannabis useInvestigation of schizophreniaSubstance use disordersGenome-wide studiesGenetic factorsMental health conditionsExecutive functionCannabis useSubstance useLead variantsSchizophreniaGenetic variantsEuropean ancestryEuropean ancestry dataRisk-takingSCZHeritable factorsCannabisDisordersTobacco smokeGenetic correlationsDissecting the Relationships Between Cannabis Use Disorder and Schizophrenia Using Genome-Wide Approaches
Johnson E, Levey D, Baranger D, Colbert S, Gelernter J, Agrawal A. Dissecting the Relationships Between Cannabis Use Disorder and Schizophrenia Using Genome-Wide Approaches. Biological Psychiatry 2024, 95: s28-s29. DOI: 10.1016/j.biopsych.2024.02.075.Peer-Reviewed Original ResearchGenetic influences and causal pathways shared between cannabis use disorder and other substance use traits
Galimberti M, Levey D, Deak J, Zhou H, Stein M, Gelernter J. Genetic influences and causal pathways shared between cannabis use disorder and other substance use traits. Molecular Psychiatry 2024, 29: 2905-2910. PMID: 38580809, PMCID: PMC11419938, DOI: 10.1038/s41380-024-02548-y.Peer-Reviewed Original ResearchSubstance use disordersProblematic alcohol useSubstance use traitsCannabis use disorderCannabis useOpioid use disorderUse disorderGenomic structural equation modelingSmoking initiationLifetime cannabis useLegalization of cannabis useGlobal genetic correlationsProblematic substance useStructural equation modelingNicotine dependenceGenetic influencesCannabisSubstance useFagerstrom TestAlcohol useMendelian randomizationBidirectional relationshipGenetic correlationsDisordersSmoking cessationAssociation between cannabis use and brain structure and function: an observational and Mendelian randomisation study
Ishrat S, Levey D, Gelernter J, Ebmeier K, Topiwala A. Association between cannabis use and brain structure and function: an observational and Mendelian randomisation study. BMJ Mental Health 2024, 27: e301065. PMID: 39477366, PMCID: PMC11529520, DOI: 10.1136/bmjment-2024-301065.Peer-Reviewed Original ResearchConceptsCannabis useBrain structuresFunctional connectivityHistory of cannabis useResting-state functional connectivityMeasures of brain structureLifetime cannabis useCentral executive networkLifetime cannabis usersWhite matter integrityGenu of the corpus callosumMendelian randomisation analysisAssociated with multiple measuresPoorer white matter integrityInvestigate potential causal relationshipsCannabis usersExecutive networkBrain regionsImaging-derived phenotypesBrain healthCannabisRandomisation analysesTwo-sample Mendelian randomisation analysisFractional anisotropyYoung adulthood