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Ole A. Andreassen · Study

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Ole A. Andreassen

50 works· latest 2025· 6 institutionscluster: provisionalORCID 0000-0002-4461-3568

h-index42

i1047

Citations7,377

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Most cited in this library

Genome-wide association study identifies eight risk loci and implicates metabo-psychiatric origins for anorexia nervosa2019 · 1,107 citations
International meta-analysis of PTSD genome-wide association studies identifies sex- and ancestry-specific genetic risk loci2019 · 632 citations
Significant Locus and Metabolic Genetic Correlations Revealed in Genome-Wide Association Study of Anorexia Nervosa2017 · 549 citations
Oxytocin pathway gene networks in the human brain2019 · 352 citations
Risk and protective factors for mental disorders beyond genetics: an evidence‐based atlas2021 · 322 citations

Works

50 shown

The Genetics of Partnership Dissolution

Sociological Science·2025·4 authors·Open access

9citations

Sex differences in clinically diagnosed psychiatric disorders over the lifespan: a nationwide register-based study in Sweden

The Lancet Regional Health - Europe·2024·12 authors·Open access

48citations

Systems biology dissection of PTSD and MDD across brain regions, cell types, and blood

Science·2024·95 authors·Open access

97citations

Genome-wide association analyses identify 95 risk loci and provide insights into the neurobiology of post-traumatic stress disorder

Nature Genetics·2024·100 authors·Open access

204citations

COSGAP: COntainerized Statistical Genetics Analysis Pipelines

Bioinformatics Advances·2024·18 authors·Open access

9citations

Oxytocin receptor expression patterns in the human brain across development

Neuropsychopharmacology

·2022

·14 authors

·Open access

78citations

Acute COVID-19 severity and mental health morbidity trajectories in patient populations of six nations: an observational study

The Lancet Public Health·2022·49 authors·Open access

164citations

Big data and the goal of personalized health interventions

Elsevier eBooks·2021·4 authors·chapter

6citations

Cohort Profile: COVIDMENT: COVID-19 cohorts on mental health across six nations

International Journal of Epidemiology·2021·52 authors·Open access

160citations

Enhancing Discovery of Genetic Variants for Posttraumatic Stress Disorder Through Integration of Quantitative Phenotypes and Trauma Exposure Information

Biological Psychiatry·2021·98 authors·review·Open access

63citations

Risk and protective factors for mental disorders beyond genetics: an evidence‐based atlas

World Psychiatry·2021·14 authors·Open access

322citations

Dissecting the Shared Genetic Architecture of Suicide Attempt, Psychiatric Disorders, and Known Risk Factors

Biological Psychiatry·2021·86 authors·Open access

238citations

Prominent health problems, socioeconomic deprivation, and higher brain age in lonely and isolated individuals: A population-based study

Behavioural Brain Research·2021·7 authors·Open access

35citations

ENIGMA‐Sleep: Challenges, opportunities, and the road map

Journal of Sleep Research·2021·76 authors·review·Open access

35citations

Cortical thickness across the lifespan: Data from 17,075 healthy individuals aged 3–90 years

Human Brain Mapping·2021·99 authors·Open access

290citations

Brain structural correlates of insomnia severity in 1053 individuals with major depressive disorder: results from the ENIGMA MDD Working Group

Translational Psychiatry·2020·53 authors·Open access

63citations

Improving the precision of intranasal oxytocin research

Nature Human Behaviour·2020·5 authors·review·Open access

63citations

The effects of cognitive abilities and task demands on tonic and phasic pupil sizes

Biological Psychology·2020·5 authors·Open access

38citations

Associations of loneliness and social isolation with cardiovascular and metabolic health: a systematic review and meta-analysis protocol

Systematic Reviews·2020·6 authors·review·Open access

26citations

Shared genetic risk between eating disorder‐ and substance‐use‐related phenotypes: Evidence from genome‐wide association studies

Addiction Biology·2020·100 authors·Open access

76citations

Molecular genetic overlap between posttraumatic stress disorder and sleep phenotypes

SLEEP·2019·96 authors·Open access

48citations

International meta-analysis of PTSD genome-wide association studies identifies sex- and ancestry-specific genetic risk loci

Nature Communications·2019·100 authors·review·Open access

632citations

Genome-wide association study identifies eight risk loci and implicates metabo-psychiatric origins for anorexia nervosa

Nature Genetics·2019·99 authors·Open access

1,107citations

GWAS of Suicide Attempt in Psychiatric Disorders and Association With Major Depression Polygenic Risk Scores

American Journal of Psychiatry·2019·92 authors·review·Open access

269citations

Telomere length is associated with childhood trauma in patients with severe mental disorders

Translational Psychiatry·2019·12 authors·Open access

65citations

Sleep disturbances in schizophrenia spectrum and bipolar disorders – a transdiagnostic perspective

Comprehensive Psychiatry·2019·10 authors·Open access

97citations

Oxytocin pathway gene networks in the human brain

Nature Communications·2019·9 authors·Open access

352citations

Elevated hair cortisol is associated with childhood maltreatment and cognitive impairment in schizophrenia and in bipolar disorders

Schizophrenia Research·2019·9 authors·Open access

102citations

Evidence for Intranasal Oxytocin Delivery to the brain: Recent Advances and Future Perspectives

Therapeutic Delivery·2018·4 authors·Open access

96citations

Saliva oxytocin measures do not reflect peripheral plasma concentrations after intranasal oxytocin administration in men

Hormones and Behavior·2018·6 authors·Open access

52citations

Childhood Trauma and Minimization/Denial in People with and without a Severe Mental Disorder

Frontiers in Psychology·2017·5 authors·Open access

76citations

Genome-wide association study of borderline personality disorder reveals genetic overlap with bipolar disorder, major depression and schizophrenia

Translational Psychiatry·2017·100 authors·Open access

191citations

Childhood maltreatment severity is associated with elevated C-reactive protein and body mass index in adults with schizophrenia and bipolar diagnoses

Brain Behavior and Immunity·2017·13 authors·Open access

84citations

Dose-dependent social-cognitive effects of intranasal oxytocin delivered with novel Breath Powered device in adults with autism spectrum disorder: a randomized placebo-controlled double-blind crossover trial

Translational Psychiatry·2017·16 authors·Open access

111citations

Significant Locus and Metabolic Genetic Correlations Revealed in Genome-Wide Association Study of Anorexia Nervosa

American Journal of Psychiatry·2017·89 authors·review·Open access

549citations

The correlation between central and peripheral oxytocin concentrations: A systematic review and meta-analysis

Neuroscience & Biobehavioral Reviews·2017·7 authors·review·Open access

276citations

Childhood trauma is associated with increased brain responses to emotionally negative as compared with positive faces in patients with psychotic disorders

Psychological Medicine·2016·10 authors

74citations

Relationship of suicide rates with climate and economic variables in Europe during 2000–2012

Annals of General Psychiatry·2016·48 authors·Open access

76citations

Low dose intranasal oxytocin delivered with Breath Powered device dampens amygdala response to emotional stimuli: A peripheral effect-controlled within-subjects randomized dose-response fMRI trial

Psychoneuroendocrinology·2016·9 authors·Open access

102citations

Delayed sleep phase: An important circadian subtype of sleep disturbance in bipolar disorders

Journal of Affective Disorders·2015·6 authors·Open access

56citations

Sleep problems in bipolar disorders: more than just insomnia

Acta Psychiatrica Scandinavica·2015·6 authors·Open access

85citations

Low-dose oxytocin delivered intranasally with Breath Powered device affects social-cognitive behavior: a randomized four-way crossover trial with nasal cavity dimension assessment

Translational Psychiatry·2015·12 authors·Open access

103citations

Relationship of suicide rates to economic variables in Europe: 2000–2011

The British Journal of Psychiatry·2014·48 authors·Open access

124citations

High prevalence of childhood trauma in patients with schizophrenia spectrum and affective disorder

Comprehensive Psychiatry·2012·12 authors

137citations

Is cognitive impairment following early life stress in severe mental disorders based on specific or general cognitive functioning?

Psychiatry Research·2012·8 authors

103citations

Perceived discrimination is associated with severity of positive and depression/anxiety symptoms in immigrants with psychosis: a cross-sectional study

BMC Psychiatry·2011·8 authors·Open access

80citations

Assessment of Social Anxiety in First Episode Psychosis using the Liebowitz Social Anxiety scale as a Self-report Measure

European Psychiatry·2010·6 authors

36citations

Suicidality in first episode psychosis is associated with insight and negative beliefs about psychosis

Schizophrenia Research·2010·11 authors

89citations

Neurocognitive functioning and suicidality in schizophrenia spectrum disorders

Comprehensive Psychiatry·2010·9 authors

59citations

Suicidality before and in the early phases of first episode psychosis

Schizophrenia Research·2010·10 authors

122citations