Ingrid Sigfrid Melle
Position: Group leader, professor
Phone: +47 230 27350
Email:
 

Author network for Ingrid Sigfrid Melle by COREMINE medical


Publications 2017

Bauer M, Glenn T, Alda M, Aleksandrovich MA, Andreassen OA, Angelopoulos E, Ardau R, Ayhan Y, Baethge C, Bharathram SR, Bauer R, Baune BT, Becerra-Palars C, Bellivier F, Belmaker RH, Berk M, Bersudsky Y, Bicakci Ş, Birabwa-Oketcho H, Bjella TD, Bossini L, Cabrera J, Cheung EYW, Del Zompo M, Dodd S et al. (2017)
Solar insolation in springtime influences age of onset of bipolar I disorder
Acta Psychiatr Scand (in press)
PubMed 28722128

Bjornestad J, Bronnick K, Davidson L, Hegelstad WT, Joa I, Kandal O, Larsen TK, Langeveld J, Veseth M, Melle I, Johannessen JO (2017)
The central role of self-agency in clinical recovery from first episode psychosis
Psychosis, 9 (2), 140-148

Bjornestad J, Davidson L, Joa I, Larsen TK, Hegelstad WTV, Langeveld J, Veseth M, Melle I, Johannessen JO, Bronnick K (2017)
Antipsychotic treatment: experiences of fully recovered service users
J Ment Health, 26 (3), 264-270
PubMed 28602144

Bjornestad J, Hegelstad WTV, Joa I, Davidson L, Larsen TK, Melle I, Veseth M, Johannessen JO, Bronnick K (2017)
"With a little help from my friends" social predictors of clinical recovery in first-episode psychosis
Psychiatry Res, 255, 209-214
PubMed 28578180

Doan NT, Kaufmann T, Bettella F, Jørgensen KN, Brandt CL, Moberget T, Alnæs D, Douaud G, Duff E, Djurovic S, Melle I, Ueland T, Agartz I, Andreassen OA, Westlye LT (2017)
Distinct multivariate brain morphological patterns and their added predictive value with cognitive and polygenic risk scores in mental disorders
Neuroimage Clin, 15, 719-731
PubMed 28702349

Gardsjord ES, Romm KL, Røssberg JI, Friis S, Barder HE, Evensen J, Haahr U, Ten Velden Hegelstad W, Joa I, Johannessen JO, Langeveld J, Larsen TK, Opjordsmoen S, Rund BR, Simonsen E, Vaglum P, McGlashan T, Melle I (2017)
Is going into stable symptomatic remission associated with a more positive development of life satisfaction? A 10-year follow-up study of first episode psychosis
Schizophr Res (in press)
PubMed 28701275

Hibar DP, Adams HH, Jahanshad N, Chauhan G, Stein JL, Hofer E, Renteria ME, Bis JC, Arias-Vasquez A, Ikram MK, Desrivières S, Vernooij MW, Abramovic L, Alhusaini S, Amin N, Andersson M, Arfanakis K, Aribisala BS, Armstrong NJ, Athanasiu L, Axelsson T, Beecham AH, Beiser A, Bernard M, Blanton SH et al. (2017)
Novel genetic loci associated with hippocampal volume
Nat Commun, 8, 13624
PubMed 28098162

Hoseth EZ, Ueland T, Dieset I, Birnbaum R, Shin JH, Kleinman JE, Hyde TM, Mørch RH, Hope S, Lekva T, Abraityte AJ, Michelsen AE, Melle I, Westlye LT, Ueland T, Djurovic S, Aukrust P, Weinberger DR, Andreassen OA (2017)
A Study of TNF Pathway Activation in Schizophrenia and Bipolar Disorder in Plasma and Brain Tissue
Schizophr Bull, 43 (4), 881-890
PubMed 28049760

Le Hellard S, Wang Y, Witoelar A, Zuber V, Bettella F, Hugdahl K, Espeseth T, Steen VM, Melle I, Desikan R, Schork AJ, Thompson WK, Dale AM, Djurovic S, Andreassen OA, Schizophrenia Working Group of the Psychiatric Genomics Consortium (2017)
Identification of Gene Loci That Overlap Between Schizophrenia and Educational Attainment
Schizophr Bull, 43 (3), 654-664
PubMed 27338279

Melle I, Olav Johannesen J, Haahr UH, Ten Velden Hegelstad W, Joa I, Langeveld J, Larsen TK, Ilner Opjordsmoen S, Qin P, Ivar Røssberg J, Rishovd Rund B, Simonsen E, Vaglum PJW, McGlashan TH, Friis S (2017)
Causes and predictors of premature death in first-episode schizophrenia spectrum disorders
World Psychiatry, 16 (2), 217-218
PubMed 28498600

Nerhus M, Berg AO, Simonsen C, Haram M, Haatveit B, Dahl SR, Gurholt TP, Bjella TD, Ueland T, Andreassen OA, Melle I (2017)
Vitamin D Deficiency Associated With Cognitive Functioning in Psychotic Disorders
J Clin Psychiatry (in press)
PubMed 28493652

Nesvåg R, Jönsson EG, Bakken IJ, Knudsen GP, Bjella TD, Reichborn-Kjennerud T, Melle I, Andreassen OA (2017)
The quality of severe mental disorder diagnoses in a national health registry as compared to research diagnoses based on structured interview
BMC Psychiatry, 17 (1), 93
PubMed 28292279

Simonsen C, Faerden A, Romm KL, Berg AO, Bjella T, Sundet K, Ueland T, Andreassen O, Melle I (2017)
Early clinical recovery in first-episode psychosis: Symptomatic remission and its correlates at 1-year follow-up
Psychiatry Res, 254, 118-125
PubMed 28460281

Skåtun KC, Kaufmann T, Brandt CL, Doan NT, Alnæs D, Tønnesen S, Biele G, Vaskinn A, Melle I, Agartz I, Andreassen OA, Westlye LT (2017)
Thalamo-cortical functional connectivity in schizophrenia and bipolar disorder
Brain Imaging Behav (in press)
PubMed 28444556

Srinivasan S, Bettella F, Hassani S, Wang Y, Witoelar A, Schork AJ, Thompson WK, Collier DA, Desikan RS, Melle I, Dale AM, Djurovic S, Andreassen OA (2017)
Probing the Association between Early Evolutionary Markers and Schizophrenia
PLoS One, 12 (1), e0169227
PubMed 28081145

Trampush JW, Yang ML, Yu J, Knowles E, Davies G, Liewald DC, Starr JM, Djurovic S, Melle I, Sundet K, Christoforou A, Reinvang I, DeRosse P, Lundervold AJ, Steen VM, Espeseth T, Räikkönen K, Widen E, Palotie A, Eriksson JG, Giegling I, Konte B, Roussos P, Giakoumaki S, Burdick KE et al. (2017)
GWAS meta-analysis reveals novel loci and genetic correlates for general cognitive function: a report from the COGENT consortium
Mol Psychiatry, 22 (3), 336-345
PubMed 28093568

Walton E, Hibar DP, van Erp TG, Potkin SG, Roiz-Santiañez R, Crespo-Facorro B, Suarez-Pinilla P, Van Haren NE, de Zwarte SM, Kahn RS, Cahn W, Doan NT, Jørgensen KN, Gurholt TP, Agartz I, Andreassen OA, Westlye LT, Melle I, Berg AO, Mørch-Johnsen L, Faerden A, Flyckt L, Fatouros-Bergman H, Karolinska Schizophrenia Project Consortium (KaSP), Jönsson EG et al. (2017)
Positive symptoms associate with cortical thinning in the superior temporal gyrus via the ENIGMA Schizophrenia consortium
Acta Psychiatr Scand, 135 (5), 439-447
PubMed 28369804

Walton E, Hibar DP, van Erp TGM, Potkin SG, Roiz-Santiañez R, Crespo-Facorro B, Suarez-Pinilla P, van Haren NEM, de Zwarte SMC, Kahn RS, Cahn W, Doan NT, Jørgensen KN, Gurholt TP, Agartz I, Andreassen OA, Westlye LT, Melle I, Berg AO, Morch-Johnsen L, Færden A, Flyckt L, Fatouros-Bergman H, Karolinska Schizophrenia Project Consortium (KaSP), Jönsson EG et al. (2017)
Prefrontal cortical thinning links to negative symptoms in schizophrenia via the ENIGMA consortium
Psychol Med, 1-13 (in press)
PubMed 28545597

Weibell MA, Hegelstad WTV, Auestad B, Bramness J, Evensen J, Haahr U, Joa I, Johannessen JO, Larsen TK, Melle I, Opjordsmoen S, Rund BR, Simonsen E, Vaglum P, McGlashan T, McGorry P, Friis S (2017)
The Effect of Substance Use on 10-Year Outcome in First-Episode Psychosis
Schizophr Bull, 43 (4), 843-851
PubMed 28199703

Østefjells T, Lystad JU, Berg AO, Hagen R, Loewy R, Sandvik L, Melle I, Røssberg JI (2017)
Metacognitive beliefs mediate the effect of emotional abuse on depressive and psychotic symptoms in severe mental disorders
Psychol Med, 1-11 (in press)
PubMed 28397634

Aas M, Dieset I, Hope S, Hoseth E, Mørch R, Reponen E, Steen NE, Laskemoen JF, Ueland T, Aukrust P, Agartz I, Andreassen OA, Melle I (2017)
Childhood maltreatment severity is associated with elevated C-reactive protein and body mass index in adults with schizophrenia and bipolar diagnoses
Brain Behav Immun, 65, 342-349
PubMed 28619247

Publications 2016

Adams HH, Hibar DP, Chouraki V, Stein JL, Nyquist PA, Rentería ME, Trompet S, Arias-Vasquez A, Seshadri S, Desrivières S, Beecham AH, Jahanshad N, Wittfeld K, Van der Lee SJ, Abramovic L, Alhusaini S, Amin N, Andersson M, Arfanakis K, Aribisala BS, Armstrong NJ, Athanasiu L, Axelsson T, Beiser A, Bernard M et al. (2016)
Novel genetic loci underlying human intracranial volume identified through genome-wide association
Nat Neurosci, 19 (12), 1569-1582
PubMed 27694991

Aleman A, Lincoln TM, Bruggeman R, Melle I, Arends J, Arango C, Knegtering H (2016)
Treatment of negative symptoms: Where do we stand, and where do we go?
Schizophr Res, 186, 55-62
PubMed 27293137

Berg AO, Melle I, Zuber V, Simonsen C, Nerhus M, Ueland T, Andreassen OA, Sundet K, Vaskinn A (2016)
Modelling difficulties in abstract thinking in psychosis: the importance of socio-developmental background
Cogn Neuropsychiatry, 22 (1), 39-52
PubMed 28005457

Bjornestad J, Joa I, Larsen TK, Langeveld J, Davidson L, Ten Velden Hegelstad W, Anda LG, Veseth M, Melle I, Johannessen JO, Bronnick K (2016)
"Everyone Needs a Friend Sometimes" - Social Predictors of Long-Term Remission In First Episode Psychosis
Front Psychol, 7, 1491
PubMed 27757090

Demmo C, Lagerberg TV, Aminoff SR, Hellvin T, Kvitland LR, Simonsen C, Andreassen OA, Melle I, Ueland T (2016)
History of psychosis and previous episodes as potential explanatory factors for neurocognitive impairment in first-treatment bipolar I disorder
Bipolar Disord, 18 (2), 136-47
PubMed 26990158

Demmo C, Lagerberg TV, Aminoff SR, Hellvin T, Kvitland LR, Simonsen C, Haatveit B, Andreassen OA, Melle I, Ueland T (2016)
Course of neurocognitive function in first treatment bipolar I disorder: One-year follow-up study
Psychiatry Res, 249, 286-292
PubMed 28142102

Gardsjord ES, Romm KL, Friis S, Barder HE, Evensen J, Haahr U, ten Velden Hegelstad W, Joa I, Johannessen JO, Langeveld J, Larsen TK, Opjordsmoen S, Rund BR, Simonsen E, Vaglum P, McGlashan T, Melle I, Røssberg JI (2016)
Subjective quality of life in first-episode psychosis. A ten year follow-up study
Schizophr Res, 172 (1-3), 23-8
PubMed 26947210

Gunnarsson B, Jónsdóttir GA, Björnsdóttir G, Konte B, Sulem P, Kristmundsdóttir S, Kehr B, Gústafsson Ó, Helgason H, Iordache PD, Ólafsson S, Frigge ML, Þorleifsson G, Arnarsdóttir S, Stefánsdóttir B, Giegling I, Djurovic S, Sundet KS, Espeseth T, Melle I, Hartmann AM, Thorsteinsdottir U, Kong A, Guðbjartsson DF, Ettinger U et al. (2016)
A sequence variant associating with educational attainment also affects childhood cognition
Sci Rep, 6, 36189
PubMed 27811963

Haram M, Bettella F, Brandt CL, Quintana DS, Nerhus M, Bjella T, Djurovic S, Westlye LT, Andreassen OA, Melle I, Tesli M (2016)
Contribution of oxytocin receptor polymorphisms to amygdala activation in schizophrenia spectrum disorders
BJPsych Open, 2 (6), 353-358
PubMed 27847593

Haug E, Øie MG, Andreassen OA, Bratlien U, Romm KL, Møller P, Melle I (2016)
The Association between Anomalous Self-experiences, Self-esteem and Depressive Symptoms in First Episode Schizophrenia
Front Hum Neurosci, 10, 557
PubMed 27872587

Hegelstad WT, Bronnick KS, Barder HE, Evensen JH, Haahr U, Joa I, Johannessen JO, Langeveld J, Larsen TK, Melle I, Opjordsmoen S, Rund BR, Rossberg JI, Simonsen E, Vaglum PW, McGlashan TH, Friis S (2016)
Preventing Poor Vocational Functioning in Psychosis Through Early Intervention
Psychiatr Serv, 68 (1), 100-103
PubMed 27582238

Haahr UH, Larsen TK, Simonsen E, Rund BR, Joa I, Rossberg JI, Johannessen JO, Langeveld J, Evensen J, Trauelsen AM, Vaglum P, Opjordsmoen S, Hegelstad WT, Friis S, McGlashan T, Melle I (2016)
Relation between premorbid adjustment, duration of untreated psychosis and close interpersonal trauma in first-episode psychosis
Early Interv Psychiatry (in press)
PubMed 26800653

Haatveit B, Jensen J, Alnæs D, Kaufmann T, Brandt CL, Thoresen C, Andreassen OA, Melle I, Ueland T, Westlye LT (2016)
Reduced load-dependent default mode network deactivation across executive tasks in schizophrenia spectrum disorders
Neuroimage Clin, 12, 389-96
PubMed 27622135

Jørgensen KN, Nerland S, Norbom LB, Doan NT, Nesvåg R, Mørch-Johnsen L, Haukvik UK, Melle I, Andreassen OA, Westlye LT, Agartz I (2016)
Increased MRI-based cortical grey/white-matter contrast in sensory and motor regions in schizophrenia and bipolar disorder
Psychol Med, 46 (9), 1971-85
PubMed 27049014

Jørgensen KN, Nesvåg R, Nerland S, Mørch-Johnsen L, Westlye LT, Lange EH, Haukvik UK, Hartberg CB, Melle I, Andreassen OA, Agartz I (2016)
Brain volume change in first-episode psychosis: an effect of antipsychotic medication independent of BMI change
Acta Psychiatr Scand, 135 (2), 117-126
PubMed 27925164

Kaufmann T, Alnæs D, Brandt CL, Doan NT, Kauppi K, Bettella F, Lagerberg TV, Berg AO, Djurovic S, Agartz I, Melle IS, Ueland T, Andreassen OA, Westlye LT (2016)
Task modulations and clinical manifestations in the brain functional connectome in 1615 fMRI datasets
Neuroimage, 147, 243-252
PubMed 27916665

Kvitland LR, Ringen PA, Aminoff SR, Demmo C, Hellvin T, Lagerberg TV, Andreassen OA, Melle I (2016)
Duration of untreated illness in first-treatment bipolar I disorder in relation to clinical outcome and cannabis use
Psychiatry Res, 246, 762-768
PubMed 27814886

Lagerberg TV, Aminoff SR, Aas M, Bjella T, Henry C, Leboyer M, Pedersen G, Bellivier F, Icick R, Andreassen OA, Etain B, Melle I (2016)
Alcohol use disorders are associated with increased affective lability in bipolar disorder
J Affect Disord, 208, 316-324
PubMed 27810713

Lange EH, Nerland S, Jørgensen KN, Mørch-Johnsen L, Nesvåg R, Hartberg CB, Haukvik UK, Osnes K, Melle I, Andreassen OA, Agartz I (2016)
Alcohol use is associated with thinner cerebral cortex and larger ventricles in schizophrenia, bipolar disorder and healthy controls
Psychol Med, 47 (4), 655-668
PubMed 27830632

Marshall CR, Howrigan DP, Merico D, Thiruvahindrapuram B, Wu W, Greer DS, Antaki D, Shetty A, Holmans PA, Pinto D, Gujral M, Brandler WM, Malhotra D, Wang Z, Fajarado KVF, Maile MS, Ripke S, Agartz I, Albus M, Alexander M, Amin F, Atkins J, Bacanu SA, Belliveau RA, Bergen SE et al. (2016)
Contribution of copy number variants to schizophrenia from a genome-wide study of 41,321 subjects
Nat Genet, 49 (1), 27-35
PubMed 27869829

Mørch-Johnsen L, Nesvåg R, Jørgensen KN, Lange EH, Hartberg CB, Haukvik UK, Kompus K, Westerhausen R, Osnes K, Andreassen OA, Melle I, Hugdahl K, Agartz I (2016)
Auditory Cortex Characteristics in Schizophrenia: Associations With Auditory Hallucinations
Schizophr Bull, 43 (1), 75-83
PubMed 27605526

Mørch RH, Dieset I, Færden A, Hope S, Aas M, Nerhus M, Gardsjord ES, Joa I, Morken G, Agartz I, Aukrust P, Djurovic S, Melle I, Ueland T, Andreassen OA (2016)
Inflammatory evidence for the psychosis continuum model
Psychoneuroendocrinology, 67, 189-97
PubMed 26923849

Nerhus M, Berg AO, Kvitland LR, Dieset I, Hope S, Dahl SR, Weibell MA, Romm KL, Faerden A, Andreassen OA, Melle I (2016)
Low vitamin D is associated with negative and depressive symptoms in psychotic disorders
Schizophr Res, 178 (1-3), 44-49
PubMed 27595553

Ringen PA, Nesvåg R, Helle S, Lagerberg TV, Lange EH, Løberg EM, Agartz I, Andreassen OA, Melle I (2016)
Premorbid cannabis use is associated with more symptoms and poorer functioning in schizophrenia spectrum disorder
Psychol Med, 46 (15), 3127-3136
PubMed 27534999

Skåtun KC, Kaufmann T, Doan NT, Alnæs D, Córdova-Palomera A, Jönsson EG, Fatouros-Bergman H, Flyckt L, KaSP, Melle I, Andreassen OA, Agartz I, Westlye LT (2016)
Consistent Functional Connectivity Alterations in Schizophrenia Spectrum Disorder: A Multisite Study
Schizophr Bull, 43 (4), 914-924
PubMed 27872268

Skåtun KC, Kaufmann T, Tønnesen S, Biele G, Melle I, Agartz I, Alnæs D, Andreassen OA, Westlye LT (2016)
Global brain connectivity alterations in patients with schizophrenia and bipolar spectrum disorders
J Psychiatry Neurosci, 41 (5), 331-41
PubMed 26854755

Steen NE, Aas M, Simonsen C, Dieset I, Tesli M, Nerhus M, Gardsjord E, Mørch R, Agartz I, Melle I, Ueland T, Spigset O, Andreassen OA (2016)
Serum levels of second-generation antipsychotics are associated with cognitive function in psychotic disorders
World J Biol Psychiatry, 18 (6), 471-482
PubMed 27712130

Steen NE, Aas M, Simonsen C, Dieset I, Tesli M, Nerhus M, Gardsjord E, Mørch R, Agartz I, Melle I, Vaskinn A, Spigset O, Andreassen OA (2016)
Serum concentrations of mood stabilizers are associated with memory, but not other cognitive domains in psychosis spectrum disorders; explorative analyses in a naturalistic setting
Int J Bipolar Disord, 4 (1), 24
PubMed 27858347

Tesli M, Wirgenes KV, Hughes T, Bettella F, Athanasiu L, Hoseth ES, Nerhus M, Lagerberg TV, Steen NE, Agartz I, Melle I, Dieset I, Djurovic S, Andreassen OA (2016)
VRK2 gene expression in schizophrenia, bipolar disorder and healthy controls
Br J Psychiatry, 209 (2), 114-20
PubMed 26941264

Østefjells T, Melle I, Aminoff SR, Hellvin T, Hagen R, Lagerberg TV, Lystad JU, Røssberg JI (2016)
An exploration of metacognitive beliefs and thought control strategies in bipolar disorder
Compr Psychiatry, 73, 84-92
PubMed 27918949

Aas M, Andreassen OA, Aminoff SR, Færden A, Romm KL, Nesvåg R, Berg AO, Simonsen C, Agartz I, Melle I (2016)
A history of childhood trauma is associated with slower improvement rates: Findings from a one-year follow-up study of patients with a first-episode psychosis
BMC Psychiatry, 16, 126
PubMed 27146044

Aas M, Henry C, Andreassen OA, Bellivier F, Melle I, Etain B (2016)
The role of childhood trauma in bipolar disorders
Int J Bipolar Disord, 4 (1), 2
PubMed 26763504

Aas M, Henry C, Bellivier F, Lajnef M, Gard S, Kahn JP, Lagerberg TV, Aminoff SR, Bjella T, Leboyer M, Andreassen OA, Melle I, Etain B (2016)
Affective lability mediates the association between childhood trauma and suicide attempts, mixed episodes and co-morbid anxiety disorders in bipolar disorders
Psychol Med, 47 (5), 902-912
PubMed 27894372

Aas M, Kauppi K, Brandt CL, Tesli M, Kaufmann T, Steen NE, Agartz I, Westlye LT, Andreassen OA, Melle I (2016)
Childhood trauma is associated with increased brain responses to emotionally negative as compared with positive faces in patients with psychotic disorders
Psychol Med, 47 (4), 669-679
PubMed 27834153

Publications 2015

Aminoff SR, Tesli M, Bettella F, Aas M, Lagerberg TV, Djurovic S, Andreassen OA, Melle I (2015)
Polygenic risk scores in bipolar disorder subgroups
J Affect Disord, 183, 310-4
PubMed 26047958

Barrett EA, Mork E, Færden A, Nesvåg R, Agartz I, Andreassen OA, Melle I (2015)
The development of insight and its relationship with suicidality over one year follow-up in patients with first episode psychosis
Schizophr Res, 162 (1-3), 97-102
PubMed 25620119

Bauer M, Glenn T, Alda M, Andreassen OA, Angelopoulos E, Ardau R, Baethge C, Bauer R, Baune BT, Bellivier F, Belmaker RH, Berk M, Bjella TD, Bossini L, Bersudsky Y, Wo Cheung EY, Conell J, Del Zompo M, Dodd S, Etain B, Fagiolini A, Frye MA, Fountoulakis KN, Garneau-Fournier J, Gonzalez-Pinto A et al. (2015)
Influence of light exposure during early life on the age of onset of bipolar disorder
J Psychiatr Res, 64, 1-8
PubMed 25862378

Berg AO, Barrett EA, Nerhus M, Büchman C, Simonsen C, Faerden A, Andreassen OA, Melle I (2015)
Psychosis: clinical insight and beliefs in immigrants in their first episode
Early Interv Psychiatry (in press)
PubMed 26663787

Brandt CL, Doan NT, Tønnesen S, Agartz I, Hugdahl K, Melle I, Andreassen OA, Westlye LT (2015)
Assessing brain structural associations with working-memory related brain patterns in schizophrenia and healthy controls using linked independent component analysis
Neuroimage Clin, 9, 253-63
PubMed 26509112

Brandt CL, Kaufmann T, Agartz I, Hugdahl K, Jensen J, Ueland T, Haatveit B, Skatun KC, Doan NT, Melle I, Andreassen OA, Westlye LT (2015)
Cognitive Effort and Schizophrenia Modulate Large-Scale Functional Brain Connectivity
Schizophr Bull, 41 (6), 1360-9
PubMed 25731885

Fretland RA, Andersson S, Sundet K, Andreassen OA, Melle I, Vaskinn A (2015)
Theory of mind in schizophrenia: error types and associations with symptoms
Schizophr Res, 162 (1-3), 42-6
PubMed 25623602

Friis S, Melle I, Johannessen JO, Røssberg JI, Barder HE, Evensen JH, Haahr U, Ten Velden Hegelstad W, Joa I, Langeveld J, Larsen TK, Opjordsmoen S, Rund BR, Simonsen E, Vaglum PW, McGlashan TH (2015)
Early Predictors of Ten-Year Course in First-Episode Psychosis
Psychiatr Serv, 67 (4), 438-43
PubMed 26567932

Haram M, Tesli M, Bettella F, Djurovic S, Andreassen OA, Melle I (2015)
Association between Genetic Variation in the Oxytocin Receptor Gene and Emotional Withdrawal, but not between Oxytocin Pathway Genes and Diagnosis in Psychotic Disorders
Front Hum Neurosci, 9, 9
PubMed 25667571

Hartberg CB, Jørgensen KN, Haukvik UK, Westlye LT, Melle I, Andreassen OA, Agartz I (2015)
Lithium treatment and hippocampal subfields and amygdala volumes in bipolar disorder
Bipolar Disord, 17 (5), 496-506
PubMed 25809287

Haug E, Øie M, Andreassen OA, Bratlien U, Nelson B, Melle I, Møller P (2015)
High levels of anomalous self-experience are associated with longer duration of untreated psychosis
Early Interv Psychiatry, 11 (2), 133-138
PubMed 25589153

Haukvik UK, Hartberg CB, Nerland S, Jørgensen KN, Lange EH, Simonsen C, Nesvåg R, Dale AM, Andreassen OA, Melle I, Agartz I (2015)
No progressive brain changes during a 1-year follow-up of patients with first-episode psychosis
Psychol Med, 46 (3), 589-98
PubMed 26526001

Helle S, Ringen PA, Melle I, Larsen TK, Gjestad R, Johnsen E, Lagerberg TV, Andreassen OA, Kroken RA, Joa I, Ten Velden Hegelstad W, Løberg EM (2015)
Cannabis use is associated with 3years earlier onset of schizophrenia spectrum disorder in a naturalistic, multi-site sample (N=1119)
Schizophr Res, 170 (1), 217-21
PubMed 26682958

Hibar DP, Stein JL, Renteria ME, Arias-Vasquez A, Desrivières S, Jahanshad N, Toro R, Wittfeld K, Abramovic L, Andersson M, Aribisala BS, Armstrong NJ, Bernard M, Bohlken MM, Boks MP, Bralten J, Brown AA, Chakravarty MM, Chen Q, Ching CR, Cuellar-Partida G, den Braber A, Giddaluru S, Goldman AL, Grimm O et al. (2015)
Common genetic variants influence human subcortical brain structures
Nature, 520 (7546), 224-9
PubMed 25607358

Hope S, Hoseth E, Dieset I, Mørch RH, Aas M, Aukrust P, Djurovic S, Melle I, Ueland T, Agartz I, Ueland T, Westlye LT, Andreassen OA (2015)
Inflammatory markers are associated with general cognitive abilities in schizophrenia and bipolar disorder patients and healthy controls
Schizophr Res, 165 (2-3), 188-94
PubMed 25956633

Hoseth EZ, Westlye LT, Hope S, Dieset I, Aukrust P, Melle I, Haukvik UK, Agartz I, Ueland T, Ueland T, Andreassen OA (2015)
Association between cytokine levels, verbal memory and hippocampus volume in psychotic disorders and healthy controls
Acta Psychiatr Scand, 133 (1), 53-62
PubMed 26189721

Howrigan DP, Simonson MA, Davies G, Harris SE, Tenesa A, Starr JM, Liewald DC, Deary IJ, McRae A, Wright MJ, Montgomery GW, Hansell N, Martin NG, Payton A, Horan M, Ollier WE, Abdellaoui A, Boomsma DI, DeRosse P, Knowles EE, Glahn DC, Djurovic S, Melle I, Andreassen OA, Christoforou A et al. (2015)
Genome-wide autozygosity is associated with lower general cognitive ability
Mol Psychiatry, 21 (6), 837-43
PubMed 26390830

Hughes T, Hansson L, Sønderby IE, Athanasiu L, Zuber V, Tesli M, Song J, Hultman CM, Bergen SE, Landén M, Melle I, Andreassen OA, Djurovic S (2015)
A Loss-of-Function Variant in a Minor Isoform of ANK3 Protects Against Bipolar Disorder and Schizophrenia
Biol Psychiatry, 80 (4), 323-30
PubMed 26682468

Haatveit B, Vaskinn A, Sundet KS, Jensen J, Andreassen OA, Melle I, Ueland T (2015)
Stability of executive functions in first episode psychosis: One year follow up study
Psychiatry Res, 228 (3), 475-81
PubMed 26165960

Jørgensen KN, Skjærvø I, Mørch-Johnsen L, Haukvik UK, Lange EH, Melle I, Andreassen OA, Agartz I (2015)
Cigarette smoking is associated with thinner cingulate and insular cortices in patients with severe mental illness
J Psychiatry Neurosci, 40 (4), 241-9
PubMed 25672482

Kaufmann T, Skåtun KC, Alnæs D, Doan NT, Duff EP, Tønnesen S, Roussos E, Ueland T, Aminoff SR, Lagerberg TV, Agartz I, Melle IS, Smith SM, Andreassen OA, Westlye LT (2015)
Disintegration of Sensorimotor Brain Networks in Schizophrenia
Schizophr Bull, 41 (6), 1326-35
PubMed 25943122

Kvitland LR, Melle I, Aminoff SR, Demmo C, Lagerberg TV, Andreassen OA, Ringen PA (2015)
Continued cannabis use at one year follow up is associated with elevated mood and lower global functioning in bipolar I disorder
BMC Psychiatry, 15, 11
PubMed 25651990

Lagerberg TV, Icick R, Andreassen OA, Ringen PA, Etain B, Aas M, Henry C, Bjella TD, Melle I, Bellivier F (2015)
Cannabis use disorder is associated with greater illness severity in tobacco smoking patients with bipolar disorder
J Affect Disord, 190, 286-93
PubMed 26544611

Lee SH, Byrne EM, Hultman CM, Kähler A, Vinkhuyzen AA, Ripke S, Andreassen OA, Frisell T, Gusev A, Hu X, Karlsson R, Mantzioris VX, McGrath JJ, Mehta D, Stahl EA, Zhao Q, Kendler KS, Sullivan PF, Price AL, O'Donovan M, Okada Y, Mowry BJ, Raychaudhuri S, Wray NR, Schizophrenia Working Group of the Psychiatric Genomics Consortium and Rheumatoid Arthritis Consortium International et al. (2015)
New data and an old puzzle: the negative association between schizophrenia and rheumatoid arthritis
Int J Epidemiol, 44 (5), 1706-21
PubMed 26286434

Mellerup E, Andreassen OA, Bennike B, Dam H, Djurovic S, Hansen T, Jorgensen MB, Kessing LV, Koefoed P, Melle I, Mors O, Werge T, Moeller GL (2015)
Combinations of Genetic Data Present in Bipolar Patients, but Absent in Control Persons
PLoS One, 10 (11), e0143432
PubMed 26587987

Mørch-Johnsen L, Nesvåg R, Faerden A, Haukvik UK, Jørgensen KN, Lange EH, Andreassen OA, Melle I, Agartz I (2015)
Brain structure abnormalities in first-episode psychosis patients with persistent apathy
Schizophr Res, 164 (1-3), 59-64
PubMed 25818626

Nerhus M, Berg AO, Dahl SR, Holvik K, Gardsjord ES, Weibell MA, Bjella TD, Andreassen OA, Melle I (2015)
Vitamin D status in psychotic disorder patients and healthy controls--The influence of ethnic background
Psychiatry Res, 230 (2), 616-21
PubMed 26500071

Rahm C, Liberg B, Reckless G, Ousdal O, Melle I, Andreassen OA, Agartz I (2015)
Negative symptoms in schizophrenia show association with amygdala volumes and neural activation during affective processing
Acta Neuropsychiatr, 27 (4), 213-20
PubMed 25777814

Rund BR, Barder HE, Evensen J, Haahr U, ten Velden Hegelstad W, Joa I, Johannessen JO, Langeveld J, Larsen TK, Melle I, Opjordsmoen S, Røssberg JI, Simonsen E, Sundet K, Vaglum P, McGlashan T, Friis S (2015)
Neurocognition and Duration of Psychosis: A 10-year Follow-up of First-Episode Patients
Schizophr Bull, 42 (1), 87-95
PubMed 26101305

Srinivasan S, Bettella F, Mattingsdal M, Wang Y, Witoelar A, Schork AJ, Thompson WK, Zuber V, Schizophrenia Working Group of the Psychiatric Genomics Consortium, The International Headache Genetics Consortium, Winsvold BS, Zwart JA, Collier DA, Desikan RS, Melle I, Werge T, Dale AM, Djurovic S, Andreassen OA (2015)
Genetic Markers of Human Evolution Are Enriched in Schizophrenia
Biol Psychiatry, 80 (4), 284-92
PubMed 26681495

Steen NE, Aas M, Simonsen C, Dieset I, Tesli M, Nerhus M, Gardsjord E, Mørch R, Agartz I, Melle I, Vaskinn A, Spigset O, Andreassen OA (2015)
Serum level of venlafaxine is associated with better memory in psychotic disorders
Schizophr Res, 169 (1-3), 386-392
PubMed 26516101

Steinan MK, Morken G, Lagerberg TV, Melle I, Andreassen OA, Vaaler AE, Scott J (2015)
Delayed sleep phase: An important circadian subtype of sleep disturbance in bipolar disorders
J Affect Disord, 191, 156-63
PubMed 26655861

Steinan MK, Scott J, Lagerberg TV, Melle I, Andreassen OA, Vaaler AE, Morken G (2015)
Sleep problems in bipolar disorders: more than just insomnia
Acta Psychiatr Scand, 133 (5), 368-77
PubMed 26590799

Tesli M, Kauppi K, Bettella F, Brandt CL, Kaufmann T, Espeseth T, Mattingsdal M, Agartz I, Melle I, Djurovic S, Westlye LT, Andreassen OA (2015)
Altered Brain Activation during Emotional Face Processing in Relation to Both Diagnosis and Polygenic Risk of Bipolar Disorder
PLoS One, 10 (7), e0134202
PubMed 26222050

Trampush JW, Lencz T, Knowles E, Davies G, Guha S, Pe'er I, Liewald DC, Starr JM, Djurovic S, Melle I, Sundet K, Christoforou A, Reinvang I, Mukherjee S, DeRosse P, Lundervold A, Steen VM, John M, Espeseth T, Räikkönen K, Widen E, Palotie A, Eriksson JG, Giegling I, Konte B et al. (2015)
Independent evidence for an association between general cognitive ability and a genetic locus for educational attainment
Am J Med Genet B Neuropsychiatr Genet, 168B (5), 363-73
PubMed 25951819

van Erp TG, Hibar DP, Rasmussen JM, Glahn DC, Pearlson GD, Andreassen OA, Agartz I, Westlye LT, Haukvik UK, Dale AM, Melle I, Hartberg CB, Gruber O, Kraemer B, Zilles D, Donohoe G, Kelly S, McDonald C, Morris DW, Cannon DM, Corvin A, Machielsen MW, Koenders L, de Haan L, Veltman DJ et al. (2015)
Subcortical brain volume abnormalities in 2028 individuals with schizophrenia and 2540 healthy controls via the ENIGMA consortium
Mol Psychiatry, 21 (4), 585
PubMed 26283641

van Erp TG, Hibar DP, Rasmussen JM, Glahn DC, Pearlson GD, Andreassen OA, Agartz I, Westlye LT, Haukvik UK, Dale AM, Melle I, Hartberg CB, Gruber O, Kraemer B, Zilles D, Donohoe G, Kelly S, McDonald C, Morris DW, Cannon DM, Corvin A, Machielsen MW, Koenders L, de Haan L, Veltman DJ et al. (2015)
Subcortical brain volume abnormalities in 2028 individuals with schizophrenia and 2540 healthy controls via the ENIGMA consortium
Mol Psychiatry, 21 (4), 547-53
PubMed 26033243

Vaskinn A, Hartberg CB, Sundet K, Westlye LT, Andreassen OA, Melle I, Agartz I (2015)
Brain structure characteristics in intellectually superior schizophrenia
Psychiatry Res, 232 (1), 123-9
PubMed 25754688

Vaskinn A, Hartberg CB, Sundet K, Westlye LT, Andreassen OA, Melle I, Agartz I (2015)
To the editors: Reply to Anna R. Docherty
Psychiatry Res, 233 (3), 497
PubMed 26319295

Vaskinn A, Sundet K, Østefjells T, Nymo K, Melle I, Ueland T (2015)
Reading Emotions from Body Movement: A Generalized Impairment in Schizophrenia
Front Psychol, 6, 2058
PubMed 26834672

Vaskinn A, Ventura J, Andreassen OA, Melle I, Sundet K (2015)
A social path to functioning in schizophrenia: From social self-efficacy through negative symptoms to social functional capacity
Psychiatry Res, 228 (3), 803-7
PubMed 26089018

Østefjells T, Melle I, Hagen R, Romm KL, Sönmez N, Andreassen OA, Røssberg JI (2015)
Unhelpful metacognitive beliefs in early psychosis are associated with affective symptoms and childhood social adjustment
Schizophr Res, 169 (1-3), 280-285
PubMed 26519990

Publications 2014

Barder HE, Sundet K, Rund B, Evensen J, Haahr U, Hegelstad W, Joa I, Johannessen JO, Langeveld J, Larsen TK, Melle I, Opjordsmoen S, Rossberg JI, Simonsen E, Vaglum P, McGlashan T, Friis S (2014)
Ten year neurocognitive trajectories in first-episode psychosis (vol 7, pg 643, 2013)
Front. Hum. Neurosci., 8, 319

Barder HE, Sundet K, Rund BR, Evensen J, Haahr U, ten Velden Hegelstad W, Joa I, Johannessen JO, Langeveld J, Larsen TK, Melle I, Opjordsmoen S, Røssberg JI, Simonsen E, Vaglum P, McGlashan T, Friis SP (2014)
10 year course of IQ in first-episode psychosis: relationship between duration of psychosis and long-term intellectual trajectories
Psychiatry Res, 225 (3), 515-21
PubMed 25535007

Bauer M, Glenn T, Alda M, Andreassen OA, Angelopoulos E, Ardau R, Baethge C, Bauer R, Bellivier F, Belmaker RH, Berk M, Bjella TD, Bossini L, Bersudsky Y, Cheung EY, Conell J, Del Zompo M, Dodd S, Etain B, Fagiolini A, Frye MA, Fountoulakis KN, Garneau-Fournier J, González-Pinto A, Harima H et al. (2014)
Relationship between sunlight and the age of onset of bipolar disorder: an international multisite study
J Affect Disord, 167, 104-11
PubMed 24953482

Bauer M, Glenn T, Alda M, Andreassen OA, Angelopoulos E, Ardau R, Baethge C, Bauer R, Bellivier F, Belmaker RH, Berk M, Bjella TD, Bossini L, Bersudsky Y, Cheung EY, Conell J, Del Zompo M, Dodd S, Etain B, Fagiolini A, Frye MA, Fountoulakis KN, Garneau-Fournier J, Gonzalez-Pinto A, Harima H et al. (2014)
Influence of birth cohort on age of onset cluster analysis in bipolar I disorder
Eur Psychiatry, 30 (1), 99-105
PubMed 25498240

Berg AO, Andreassen OA, Aminoff SR, Romm KL, Hauff E, Melle I (2014)
The impact of immigration and visible minority status on psychosis symptom profile
Soc Psychiatry Psychiatr Epidemiol, 49 (11), 1747-57
PubMed 24927946

Berg AO, Aas M, Larsson S, Nerhus M, Hauff E, Andreassen OA, Melle I (2014)
Childhood trauma mediates the association between ethnic minority status and more severe hallucinations in psychotic disorder
Psychol Med, 45 (1), 133-42
PubMed 25065296

Brandt CL, Eichele T, Melle I, Sundet K, Server A, Agartz I, Hugdahl K, Jensen J, Andreassen OA (2014)
Working memory networks and activation patterns in schizophrenia and bipolar disorder: comparison with healthy controls
Br J Psychiatry, 204, 290-8
PubMed 24434074

Bratlien U, Øie M, Haug E, Møller P, Andreassen OA, Lien L, Melle I (2014)
Environmental factors during adolescence associated with later development of psychotic disorders - a nested case-control study
Psychiatry Res, 215 (3), 579-85
PubMed 24495574

Dieset I, Haukvik UK, Melle I, Røssberg JI, Ueland T, Hope S, Dale AM, Djurovic S, Aukrust P, Agartz I, Andreassen OA (2014)
Association between altered brain morphology and elevated peripheral endothelial markers--implications for psychotic disorders
Schizophr Res, 161 (2-3), 222-8
PubMed 25433965

Haram M, Tesli M, Dieset I, Steen NE, Røssberg JI, Djurovic S, Andreassen OA, Melle I (2014)
An attempt to identify single nucleotide polymorphisms contributing to possible relationships between personality traits and oxytocin-related genes
Neuropsychobiology, 69 (1), 25-30
PubMed 24458227

Haug E, Øie M, Andreassen OA, Bratlien U, Nelson B, Aas M, Møller P, Melle I (2014)
Anomalous self-experience and childhood trauma in first-episode schizophrenia
Compr Psychiatry, 56, 35-41
PubMed 25458477

Haukvik UK, Westlye LT, Mørch-Johnsen L, Jørgensen KN, Lange EH, Dale AM, Melle I, Andreassen OA, Agartz I (2014)
In vivo hippocampal subfield volumes in schizophrenia and bipolar disorder
Biol Psychiatry, 77 (6), 581-8
PubMed 25127742

Kauppi K, Westlye LT, Tesli M, Bettella F, Brandt CL, Mattingsdal M, Ueland T, Espeseth T, Agartz I, Melle I, Djurovic S, Andreassen OA (2014)
Polygenic risk for schizophrenia associated with working memory-related prefrontal brain activation in patients with schizophrenia and healthy controls
Schizophr Bull, 41 (3), 736-43
PubMed 25392519

Kvitland LR, Melle I, Aminoff SR, Lagerberg TV, Andreassen OA, Ringen PA (2014)
Cannabis use in first-treatment bipolar I disorder: relations to clinical characteristics
Early Interv Psychiatry, 10 (1), 36-44
PubMed 24739233

Langeveld J, Bjørkly S, Auestad B, Barder H, Evensen J, Ten Velden Hegelstad W, Joa I, Johannessen JO, Larsen TK, Melle I, Opjordsmoen S, Røssberg JI, Rund BR, Simonsen E, Vaglum P, McGlashan T, Friis S (2014)
Treatment and violent behavior in persons with first episode psychosis during a 10-year prospective follow-up study
Schizophr Res, 156 (2-3), 272-6
PubMed 24837683

Sonmez N, Hagen R, Andreassen OA, Romm KL, Grande M, Jensen LH, Morrison AP, Melle I, Rossberg JI (2014)
Cognitive Behavior Therapy in First-Episode Psychosis With a Focus on Depression, Anxiety, and Self-Esteem
Cogn. Behav. Pract., 21 (1), 43-54

Steen NE, Methlie P, Lorentzen S, Dieset I, Aas M, Nerhus M, Haram M, Agartz I, Melle I, Berg JP, Andreassen OA (2014)
Altered systemic cortisol metabolism in bipolar disorder and schizophrenia spectrum disorders
J Psychiatr Res, 52, 57-62
PubMed 24534618

Sönmez N, Røssberg JI, Evensen J, Barder HE, Haahr U, Ten Velden Hegelstad W, Joa I, Johannessen JO, Langeveld H, Larsen TK, Melle I, Opjordsmoen S, Rund BR, Simonsen E, Vaglum P, McGlashan T, Friis S (2014)
Depressive symptoms in first-episode psychosis: a 10-year follow-up study
Early Interv Psychiatry, 10 (3), 227-33
PubMed 24956976

Tesli M, Espeseth T, Bettella F, Mattingsdal M, Aas M, Melle I, Djurovic S, Andreassen OA (2014)
Polygenic risk score and the psychosis continuum model
Acta Psychiatr Scand, 130 (4), 311-7
PubMed 24961959

Thompson PM, Stein JL, Medland SE, Hibar DP, Vasquez AA, Renteria ME, Toro R, Jahanshad N, Schumann G, Franke B, Wright MJ, Martin NG, Agartz I, Alda M, Alhusaini S, Almasy L, Almeida J, Alpert K, Andreasen NC, Andreassen OA, Apostolova LG, Appel K, Armstrong NJ, Aribisala B, Bastin ME et al. (2014)
The ENIGMA Consortium: large-scale collaborative analyses of neuroimaging and genetic data
Brain Imaging Behav, 8 (2), 153-82
PubMed 24399358

Vaskinn A, Ueland T, Melle I, Agartz I, Andreassen OA, Sundet K (2014)
Neurocognitive Decrements are Present in Intellectually Superior Schizophrenia
Front Psychiatry, 5, 45
PubMed 24847284

Wirgenes KV, Tesli M, Inderhaug E, Athanasiu L, Agartz I, Melle I, Hughes T, Andreassen OA, Djurovic S (2014)
ANK3 gene expression in bipolar disorder and schizophrenia
Br J Psychiatry, 205 (3), 244-5
PubMed 24809399

Aas M, Aminoff SR, Vik Lagerberg T, Etain B, Agartz I, Andreassen OA, Melle I (2014)
Affective lability in patients with bipolar disorders is associated with high levels of childhood trauma
Psychiatry Res, 218 (1-2), 252-5
PubMed 24803185

Aas M, Dazzan P, Mondelli V, Melle I, Murray RM, Pariante CM (2014)
A systematic review of cognitive function in first-episode psychosis, including a discussion on childhood trauma, stress, and inflammation
Front Psychiatry, 4, 182
PubMed 24409157

Aas M, Haukvik UK, Djurovic S, Tesli M, Athanasiu L, Bjella T, Hansson L, Cattaneo A, Agartz I, Andreassen OA, Melle I (2014)
Interplay between childhood trauma and BDNF val66met variants on blood BDNF mRNA levels and on hippocampus subfields volumes in schizophrenia spectrum and bipolar disorders
J Psychiatr Res, 59, 14-21
PubMed 25246365

Aas M, Pedersen G, Henry C, Bjella T, Bellivier F, Leboyer M, Kahn JP, Cohen RF, Gard S, Aminoff SR, Lagerberg TV, Andreassen OA, Melle I, Etain B (2014)
Psychometric properties of the Affective Lability Scale (54 and 18-item version) in patients with bipolar disorder, first-degree relatives, and healthy controls
J Affect Disord, 172, 375-80
PubMed 25451440

Publications 2013

Aminoff SR, Hellvin T, Lagerberg TV, Berg AO, Andreassen OA, Melle I (2013)
Neurocognitive features in subgroups of bipolar disorder
Bipolar Disord, 15 (3), 272-83
PubMed 23521608

Barder HE, Sundet K, Rund BR, Evensen J, Haahr U, Ten Velden Hegelstad W, Joa I, Johannessen JO, Langeveld H, Larsen TK, Melle I, Opjordsmoen S, Røssberg JI, Simonsen E, Vaglum P, McGlashan T, Friis S (2013)
Neurocognitive development in first episode psychosis 5 years follow-up: associations between illness severity and cognitive course
Schizophr Res, 149 (1-3), 63-9
PubMed 23810121

Barder HE, Sundet K, Rund BR, Evensen J, Haahr U, Ten Velden Hegelstad W, Joa I, Johannessen JO, Langeveld J, Larsen TK, Melle I, Opjordsmoen S, Røssberg JI, Simonsen E, Vaglum P, McGlashan T, Friis S (2013)
Ten year neurocognitive trajectories in first-episode psychosis
Front Hum Neurosci, 7, 643
PubMed 24109449

Bergmann O, Haukvik UK, Brown AA, Rimol LM, Hartberg CB, Athanasiu L, Melle I, Djurovic S, Andreassen OA, Dale AM, Agartz I (2013)
ZNF804A and cortical thickness in schizophrenia and bipolar disorder
Psychiatry Res, 212 (2), 154-7
PubMed 23562677

Bourne C, Aydemir Ö, Balanzá-Martínez V, Bora E, Brissos S, Cavanagh JT, Clark L, Cubukcuoglu Z, Dias VV, Dittmann S, Ferrier IN, Fleck DE, Frangou S, Gallagher P, Jones L, Kieseppä T, Martínez-Aran A, Melle I, Moore PB, Mur M, Pfennig A, Raust A, Senturk V, Simonsen C, Smith DJ et al. (2013)
Neuropsychological testing of cognitive impairment in euthymic bipolar disorder: an individual patient data meta-analysis
Acta Psychiatr Scand, 128 (3), 149-62
PubMed 23617548

Bratlien U, Øie M, Haug E, Møller P, Andreassen OA, Lien L, Melle I (2013)
Self-reported symptoms and health service use in adolescence in persons who later develop psychotic disorders: a prospective case-control study
Early Interv Psychiatry, 9 (3), 221-7
PubMed 24224904

Cross-Disorder Group of the Psychiatric Genomics Consortium, Lee SH, Ripke S, Neale BM, Faraone SV, Purcell SM, Perlis RH, Mowry BJ, Thapar A, Goddard ME, Witte JS, Absher D, Agartz I, Akil H, Amin F, Andreassen OA, Anjorin A, Anney R, Anttila V, Arking DE, Asherson P, Azevedo MH, Backlund L, Badner JA, Bailey AJ et al. (2013)
Genetic relationship between five psychiatric disorders estimated from genome-wide SNPs
Nat Genet, 45 (9), 984-94
PubMed 23933821

Etain B, Aas M, Andreassen OA, Lorentzen S, Dieset I, Gard S, Kahn JP, Bellivier F, Leboyer M, Melle I, Henry C (2013)
Childhood trauma is associated with severe clinical characteristics of bipolar disorders
J Clin Psychiatry, 74 (10), 991-8
PubMed 24229750

Faerden A, Barrett EA, Nesvåg R, Friis S, Finset A, Marder SR, Ventura J, Andreassen OA, Agartz I, Melle I (2013)
Apathy, poor verbal memory and male gender predict lower psychosocial functioning one year after the first treatment of psychosis
Psychiatry Res, 210 (1), 55-61
PubMed 23489592

Finseth PI, Sønderby IE, Djurovic S, Agartz I, Malt UF, Melle I, Morken G, Andreassen OA, Vaaler AE, Tesli M (2013)
Association analysis between suicidal behaviour and candidate genes of bipolar disorder and schizophrenia
J Affect Disord, 163, 110-4
PubMed 24461634

Hansen CF, Torgalsbøen AK, Røssberg JI, Romm KL, Andreassen OA, Bell MD, Melle I (2013)
Object relations, reality testing, and social withdrawal in schizophrenia and bipolar disorder
J Nerv Ment Dis, 201 (3), 222-5
PubMed 23407207

Haug E, Øie M, Andreassen OA, Bratlien U, Raballo A, Nelson B, Møller P, Melle I (2013)
Anomalous self-experiences contribute independently to social dysfunction in the early phases of schizophrenia and psychotic bipolar disorder
Compr Psychiatry, 55 (3), 475-82
PubMed 24378241

Haukvik UK, McNeil T, Lange EH, Melle I, Dale AM, Andreassen OA, Agartz I (2013)
Pre- and perinatal hypoxia associated with hippocampus/amygdala volume in bipolar disorder
Psychol Med, 44 (5), 975-85
PubMed 23803260

Haukvik UK, Rimol LM, Roddey JC, Hartberg CB, Lange EH, Vaskinn A, Melle I, Andreassen OA, Dale A, Agartz I (2013)
Normal birth weight variation is related to cortical morphology across the psychosis spectrum
Schizophr Bull, 40 (2), 410-9
PubMed 23419977

Hellvin T, Sundet K, Aminoff SR, Andreassen OA, Melle I (2013)
Social functioning in first contact mania: clinical and neurocognitive correlates
Compr Psychiatry, 54 (5), 432-8
PubMed 23351832

Johansen R, Iversen VC, Melle I, Hestad KA (2013)
Therapeutic alliance in early schizophrenia spectrum disorders: a cross-sectional study
Ann Gen Psychiatry, 12 (1), 14
PubMed 23656747

Johansen R, Melle I, Iversen VC, Hestad K (2013)
Personality traits, interpersonal problems and therapeutic alliance in early schizophrenia spectrum disorders
Compr Psychiatry, 54 (8), 1169-76
PubMed 23856387

Lagerberg TV, Kvitland LR, Aminoff SR, Aas M, Ringen PA, Andreassen OA, Melle I (2013)
Indications of a dose-response relationship between cannabis use and age at onset in bipolar disorder
Psychiatry Res, 215 (1), 101-4
PubMed 24262665

Lange EH, Nesvåg R, Ringen PA, Hartberg CB, Haukvik UK, Andreassen OA, Melle I, Agartz I (2013)
One year follow-up of alcohol and illicit substance use in first-episode psychosis: does gender matter?
Compr Psychiatry, 55 (2), 274-82
PubMed 24262129

Larsson S, Aas M, Klungsøyr O, Agartz I, Mork E, Steen NE, Barrett EA, Lagerberg TV, Røssberg JI, Melle I, Andreassen OA, Lorentzen S (2013)
Patterns of childhood adverse events are associated with clinical characteristics of bipolar disorder
BMC Psychiatry, 13, 97
PubMed 23522391

Lencz T, Knowles E, Davies G, Guha S, Liewald DC, Starr JM, Djurovic S, Melle I, Sundet K, Christoforou A, Reinvang I, Mukherjee S, DeRosse P, Lundervold A, Steen VM, John M, Espeseth T, Räikkönen K, Widen E, Palotie A, Eriksson JG, Giegling I, Konte B, Ikeda M, Roussos P et al. (2013)
Molecular genetic evidence for overlap between general cognitive ability and risk for schizophrenia: a report from the Cognitive Genomics consorTium (COGENT)
Mol Psychiatry, 19 (2), 168-74
PubMed 24342994

Melle I (2013)
History of depression and previous suicide attempt predict increased risk of suicide attempt following diagnosis of first-episode psychosis
Evid Based Ment Health, 16 (3), 67
PubMed 23839291

Melle I (2013)
The Breivik case and what psychiatrists can learn from it
World Psychiatry, 12 (1), 16-21
PubMed 23471788

Mork E, Walby FA, Harkavy-Friedman JM, Barrett EA, Steen NE, Lorentzen S, Andreassen OA, Melle I, Mehlum L (2013)
Clinical characteristics in schizophrenia patients with or without suicide attempts and non-suicidal self-harm--a cross-sectional study
BMC Psychiatry, 13, 255
PubMed 24106884

Nerhus M, Berg AO, Haram M, Kvitland LR, Andreassen OA, Melle I (2013)
Migrant background and ethnic minority status as predictors for duration of untreated psychosis
Early Interv Psychiatry, 9 (1), 61-5
PubMed 24225002

Nesvåg R, Schaer M, Haukvik UK, Westlye LT, Rimol LM, Lange EH, Hartberg CB, Ottet MC, Melle I, Andreassen OA, Jönsson EG, Agartz I, Eliez S (2013)
Reduced brain cortical folding in schizophrenia revealed in two independent samples
Schizophr Res, 152 (2-3), 333-8
PubMed 24365403

Schoeyen HK, Melle I, Sundet K, Aminoff SR, Hellvin T, Auestad BH, Morken G, Andreassen OA (2013)
Occupational outcome in bipolar disorder is not predicted by premorbid functioning and intelligence
Bipolar Disord, 15 (3), 294-305
PubMed 23527993

Sönmez N, Romm KL, Andreasssen OA, Melle I, Røssberg JI (2013)
Depressive symptoms in first episode psychosis: a one-year follow-up study
BMC Psychiatry, 13, 106
PubMed 23560591

ten Velden Hegelstad W, Joa I, Barder H, Evensen J, Haahr U, Johannessen JO, Langeveld J, Melle I, Opjordsmoen S, Røssberg JI, Rund BR, Simonsen E, Vaglum P, McGlashan T, Friis S, Larsen TK (2013)
Variation in duration of untreated psychosis in an 18-year perspective
Early Interv Psychiatry, 8 (4), 323-31
PubMed 23773272

Tesli M, Egeland R, Sønderby IE, Haukvik UK, Bettella F, Hibar DP, Thompson PM, Rimol LM, Melle I, Agartz I, Djurovic S, Andreassen OA (2013)
No evidence for association between bipolar disorder risk gene variants and brain structural phenotypes
J Affect Disord, 151 (1), 291-7
PubMed 23820096

Tesli M, Skatun KC, Ousdal OT, Brown AA, Thoresen C, Agartz I, Melle I, Djurovic S, Jensen J, Andreassen OA (2013)
CACNA1C risk variant and amygdala activity in bipolar disorder, schizophrenia and healthy controls
PLoS One, 8 (2), e56970
PubMed 23437284

Vaskinn A, Sundet K, Ueland T, Agartz I, Melle I, Andreassen OA (2013)
Social cognition and clinical insight in schizophrenia and bipolar disorder
J Nerv Ment Dis, 201 (6), 445-51
PubMed 23686158

Welander-Vatn A, Jensen J, Otnaess MK, Agartz I, Server A, Melle I, Andreassen OA (2013)
The neural correlates of cognitive control in bipolar I disorder: an fMRI study of medial frontal cortex activation during a Go/No-go task
Neurosci Lett, 549, 51-6
PubMed 23778236

Aas M, Etain B, Bellivier F, Henry C, Lagerberg T, Ringen A, Agartz I, Gard S, Kahn JP, Leboyer M, Andreassen OA, Melle I (2013)
Additive effects of childhood abuse and cannabis abuse on clinical expressions of bipolar disorders
Psychol Med, 44 (8), 1653-62
PubMed 24028906

Aas M, Haukvik UK, Djurovic S, Bergmann Ø, Athanasiu L, Tesli MS, Hellvin T, Steen NE, Agartz I, Lorentzen S, Sundet K, Andreassen OA, Melle I (2013)
BDNF val66met modulates the association between childhood trauma, cognitive and brain abnormalities in psychoses
Prog Neuropsychopharmacol Biol Psychiatry, 46, 181-8
PubMed 23876786

Publications 2012

Aminoff SR, Jensen J, Lagerberg TV, Hellvin T, Sundet K, Andreassen OA, Melle I (2012)
An association between affective lability and executive functioning in bipolar disorder
Psychiatry Res, 198 (1), 58-61
PubMed 22405635

Athanasiu L, Brown AA, Birkenaes AB, Mattingsdal M, Agartz I, Melle I, Steen VM, Andreassen OA, Djurovic S (2012)
Genome-wide association study identifies genetic loci associated with body mass index and high density lipoprotein-cholesterol levels during psychopharmacological treatment - a cross-sectional naturalistic study
Psychiatry Res, 197 (3), 327-36
PubMed 22417934

Bakken TE, Roddey JC, Djurovic S, Akshoomoff N, Amaral DG, Bloss CS, Casey BJ, Chang L, Ernst TM, Gruen JR, Jernigan TL, Kaufmann WE, Kenet T, Kennedy DN, Kuperman JM, Murray SS, Sowell ER, Rimol LM, Mattingsdal M, Melle I, Agartz I, Andreassen OA, Schork NJ, Dale AM, Alzheimer's Disease Neuroimaging Initiative et al. (2012)
Association of common genetic variants in GPCPD1 with scaling of visual cortical surface area in humans
Proc Natl Acad Sci U S A, 109 (10), 3985-90
PubMed 22343285

Bauer M, Glenn T, Alda M, Andreassen OA, Ardau R, Bellivier F, Berk M, Bjella TD, Bossini L, Del Zompo M, Dodd S, Fagiolini A, Frye MA, Gonzalez-Pinto A, Henry C, Kapczinski F, Kliwicki S, König B, Kunz M, Lafer B, Lopez-Jaramillo C, Manchia M, Marsh W, Martinez-Cengotitabengoa M, Melle I et al. (2012)
Impact of sunlight on the age of onset of bipolar disorder
Bipolar Disord, 14 (6), 654-63
PubMed 22612720

Bratlien U, Øie M, Lien L, Agartz I, Lie Romm K, Vaskinn A, Ueland T, Andreassen OA, Melle I (2012)
Social dysfunction in first-episode psychosis and relations to neurocognition, duration of untreated psychosis and clinical symptoms
Psychiatry Res, 207 (1-2), 33-9
PubMed 23153893

Brown AA, Jensen J, Nikolova YS, Djurovic S, Agartz I, Server A, Ferrell RE, Manuck SB, Mattingsdal M, Melle I, Hariri AR, Frigessi A, Andreassen OA (2012)
Genetic variants affecting the neural processing of human facial expressions: evidence using a genome-wide functional imaging approach
Transl Psychiatry, 2, e143
PubMed 22828495

Dieset I, Djurovic S, Tesli M, Hope S, Mattingsdal M, Michelsen A, Joa I, Larsen TK, Agartz I, Melle I, Røssberg JI, Aukrust P, Andreassen OA, Ueland T (2012)
Up-regulation of NOTCH4 gene expression in bipolar disorder
Am J Psychiatry, 169 (12), 1292-300
PubMed 23212060

Dieset I, Hope S, Ueland T, Bjella T, Agartz I, Melle I, Aukrust P, Røssberg JI, Andreassen OA (2012)
Cardiovascular risk factors during second generation antipsychotic treatment are associated with increased C-reactive protein
Schizophr Res, 140 (1-3), 169-74
PubMed 22817875

Evensen J, Røssberg JI, Barder H, Haahr U, Hegelstad Wt, Joa I, Johannessen JO, Larsen TK, Melle I, Opjordsmoen S, Rund BR, Simonsen E, Sundet K, Vaglum P, Friis S, McGlashan T (2012)
Apathy in first episode psychosis patients: a ten year longitudinal follow-up study
Schizophr Res, 136 (1-3), 19-24
PubMed 22285655

Evensen J, Røssberg JI, Barder H, Haahr U, Hegelstad WT, Joa I, Johannessen JO, Larsen TK, Melle I, Opjordsmoen S, Rund BR, Simonsen E, Vaglum P, McGlashan T, Friis S (2012)
Flat affect and social functioning: a 10 year follow-up study of first episode psychosis patients
Schizophr Res, 139 (1-3), 99-104
PubMed 22627124

Friis S, Barder H, Evensen JH, Haahr U, Hegelstad WT, Joa I, Johannessen JO, Langeveld J, Larsen TK, Melle I, Opjordsmoen S, Rund BR, Røssberg JI, Simonsen E, Sundet K, Vaglum P, McGlashan T (2012)
The TIPS study and bias: replies to Dr Amos
Aust N Z J Psychiatry, 46 (9), 905-7
PubMed 22956571

Hansen CF, Torgalsbøen AK, Røssberg JI, Andreassen OA, Bell MD, Melle I (2012)
Object relations and reality testing in schizophrenia, bipolar disorders, and healthy controls: differences in profiles and clinical correlates
Compr Psychiatry, 53 (8), 1200-7
PubMed 22578986

Haug E, Lien L, Raballo A, Bratlien U, Oie M, Andreassen OA, Melle I, Møller P (2012)
Selective aggregation of self-disorders in first-treatment DSM-IV schizophrenia spectrum disorders
J Nerv Ment Dis, 200 (7), 632-6
PubMed 22759943

Hegelstad WT, Larsen TK, Auestad B, Evensen J, Haahr U, Joa I, Johannesen JO, Langeveld J, Melle I, Opjordsmoen S, Rossberg JI, Rund BR, Simonsen E, Sundet K, Vaglum P, Friis S, McGlashan T (2012)
Long-term follow-up of the TIPS early detection in psychosis study: effects on 10-year outcome
Am J Psychiatry, 169 (4), 374-80
PubMed 22407080

Hellvin T, Sundet K, Simonsen C, Aminoff SR, Lagerberg TV, Andreassen OA, Melle I (2012)
Neurocognitive functioning in patients recently diagnosed with bipolar disorder
Bipolar Disord, 14 (3), 227-38
PubMed 22548896

Holmén A, Juuhl-Langseth M, Thormodsen R, Sundet K, Melle I, Rund BR (2012)
Executive function tests in early-onset psychosis: which one to choose?
Scand J Psychol, 53 (3), 200-5
PubMed 22416819

Holmén A, Juuhl-Langseth M, Thormodsen R, Ueland T, Agartz I, Sundet K, Andreassen OA, Rund BR, Melle I (2012)
Executive function in early- and adult onset schizophrenia
Schizophr Res, 142 (1-3), 177-82
PubMed 23102692

Haahr U, Simonsen E, Røssberg JI, Johannessen JO, Larsen TK, Melle I, Opjordsmoen S, Rund BR, Vaglum P, Friis S, McGlashan T (2012)
Patient satisfaction with treatment in first-episode psychosis
Nord J Psychiatry, 66 (5), 329-35
PubMed 22250962

Jönsson EG, Saetre P, Nyholm H, Djurovic S, Melle I, Andreassen OA, Skjødt C, Thygesen JH, Werge T, Hall H, Agartz I, Terenius L (2012)
Lack of association between the regulator of G-protein signaling 4 (RGS4) rs951436 polymorphism and schizophrenia
Psychiatr Genet, 22 (5), 263-4
PubMed 22157635

Kähler AK, Rimol LM, Brown AA, Djurovic S, Hartberg CB, Melle I, Dale AM, Andreassen OA, Agartz I (2012)
Effect of DISC1 SNPs on brain structure in healthy controls and patients with a history of psychosis
Am J Med Genet B Neuropsychiatr Genet, 159B (6), 722-30
PubMed 22815203

Langeveld J, Andreassen OA, Auestad B, Færden A, Hauge LJ, Joa I, Johannessen JO, Melle I, Rund BR, Røssberg JI, Simonsen E, Vaglum P, Larsen TK (2012)
Is there an optimal factor structure of the Positive and Negative Syndrome Scale in patients with first-episode psychosis?
Scand J Psychol, 54 (2), 160-5
PubMed 23252448

Langeveld J, Joa I, Friis S, ten Velden Hegelstad W, Melle I, Johannessen JO, Opjordsmoen S, Simonsen E, Vaglum P, Auestad B, McGlashan T, Larsen TK (2012)
A comparison of adolescent- and adult-onset first-episode, non-affective psychosis: 2-year follow-up
Eur Arch Psychiatry Clin Neurosci, 262 (7), 599-605
PubMed 22441715

Larsson S, Andreassen OA, Aas M, Røssberg JI, Mork E, Steen NE, Barrett EA, Lagerberg TV, Peleikis D, Agartz I, Melle I, Lorentzen S (2012)
High prevalence of childhood trauma in patients with schizophrenia spectrum and affective disorder
Compr Psychiatry, 54 (2), 123-7
PubMed 22901835

Lindholm Carlström E, Saetre P, Rosengren A, Thygesen JH, Djurovic S, Melle I, Andreassen OA, Werge T, Agartz I, Hall H, Terenius L, Jönsson EG (2012)
Association between a genetic variant in the serotonin transporter gene (SLC6A4) and suicidal behavior in patients with schizophrenia
Behav Brain Funct, 8, 24
PubMed 22594806

Mattingsdal M, Brown AA, Djurovic S, Sønderby IE, Server A, Melle I, Agartz I, Hovig E, Jensen J, Andreassen OA (2012)
Pathway analysis of genetic markers associated with a functional MRI faces paradigm implicates polymorphisms in calcium responsive pathways
Neuroimage, 70, 143-9
PubMed 23274185

Melle I, Barrett EA (2012)
Insight and suicidal behavior in first-episode schizophrenia
Expert Rev Neurother, 12 (3), 353-9
PubMed 22364334

Mellerup E, Andreassen O, Bennike B, Dam H, Djurovic S, Hansen T, Melle I, Møller GL, Mors O, Koefoed P (2012)
Connection between genetic and clinical data in bipolar disorder
PLoS One, 7 (9), e44623
PubMed 23028568

Mork E, Mehlum L, Barrett EA, Agartz I, Harkavy-Friedman JM, Lorentzen S, Melle I, Andreassen OA, Walby FA (2012)
Self-harm in patients with schizophrenia spectrum disorders
Arch Suicide Res, 16 (2), 111-23
PubMed 22551042

Ousdal OT, Anand Brown A, Jensen J, Nakstad PH, Melle I, Agartz I, Djurovic S, Bogdan R, Hariri AR, Andreassen OA (2012)
Associations between variants near a monoaminergic pathways gene (PHOX2B) and amygdala reactivity: a genome-wide functional imaging study
Twin Res Hum Genet, 15 (3), 273-85
PubMed 22856363

Rimol LM, Nesvåg R, Hagler DJ, Bergmann O, Fennema-Notestine C, Hartberg CB, Haukvik UK, Lange E, Pung CJ, Server A, Melle I, Andreassen OA, Agartz I, Dale AM (2012)
Cortical volume, surface area, and thickness in schizophrenia and bipolar disorder
Biol Psychiatry, 71 (6), 552-60
PubMed 22281121

Ringen PA, Melle I, Berg AO, Agartz I, Spigset O, Simonsen C, Sundet K, Andreassen OA (2012)
Cannabis use and premorbid functioning as predictors of poorer neurocognition in schizophrenia spectrum disorder
Schizophr Res, 143 (1), 84-9
PubMed 23178107

Stein JL, Medland SE, Vasquez AA, Hibar DP, Senstad RE, Winkler AM, Toro R, Appel K, Bartecek R, Bergmann Ø, Bernard M, Brown AA, Cannon DM, Chakravarty MM, Christoforou A, Domin M, Grimm O, Hollinshead M, Holmes AJ, Homuth G, Hottenga JJ, Langan C, Lopez LM, Hansell NK, Hwang KS et al. (2012)
Identification of common variants associated with human hippocampal and intracranial volumes
Nat Genet, 44 (5), 552-61
PubMed 22504417

Steinberg S, de Jong S, Mattheisen M, Costas J, Demontis D, Jamain S, Pietiläinen OP, Lin K, Papiol S, Huttenlocher J, Sigurdsson E, Vassos E, Giegling I, Breuer R, Fraser G, Walker N, Melle I, Djurovic S, Agartz I, Tuulio-Henriksson A, Suvisaari J, Lönnqvist J, Paunio T, Olsen L, Hansen T et al. (2012)
Common variant at 16p11.2 conferring risk of psychosis
Mol Psychiatry, 19 (1), 108-14
PubMed 23164818

Straand T, Melle I, Gjerden P (2012)
User surveys in psychiatry in the 1950s
Tidsskr Nor Laegeforen, 132 (5), 543-6
PubMed 22398775

Tandberg M, Sundet K, Andreassen OA, Melle I, Ueland T (2012)
Occupational functioning, symptoms and neurocognition in patients with psychotic disorders: investigating subgroups based on social security status
Soc Psychiatry Psychiatr Epidemiol, 48 (6), 863-74
PubMed 23064396

Tandberg M, Ueland T, Andreassen OA, Sundet K, Melle I (2012)
Factors associated with occupational and academic status in patients with first-episode psychosis with a particular focus on neurocognition
Soc Psychiatry Psychiatr Epidemiol, 47 (11), 1763-73
PubMed 22310699

Ten Velden Hegelstad W, Haahr U, Larsen TK, Auestad B, Barder H, Evensen J, Joa I, Johannessen JO, Langeveld J, Melle I, Opjordsmoen S, Rossberg JI, Rund BR, Simonsen E, Vaglum P, McGlashan T, Friis S (2012)
Early detection, early symptom progression and symptomatic remission after ten years in a first episode of psychosis study
Schizophr Res, 143 (2-3), 337-43
PubMed 23219862

Vassos E, Steinberg S, Cichon S, Breen G, Sigurdsson E, Andreassen OA, Djurovic S, Morken G, Grigoroiu-Serbanescu M, Diaconu CC, Czerski PM, Hauser J, Babadjanova G, Abramova LI, Mühleisen TW, Nöthen MM, Rietschel M, McGuffin P, St Clair D, Gustafsson O, Melle I, Pietiläinen OP, Ruggeri M, Tosato S, Werge T et al. (2012)
Replication study and meta-analysis in European samples supports association of the 3p21.1 locus with bipolar disorder
Biol Psychiatry, 72 (8), 645-50
PubMed 22560537

Wirgenes KV, Sønderby IE, Haukvik UK, Mattingsdal M, Tesli M, Athanasiu L, Sundet K, Røssberg JI, Dale AM, Brown AA, Agartz I, Melle I, Djurovic S, Andreassen OA (2012)
TCF4 sequence variants and mRNA levels are associated with neurodevelopmental characteristics in psychotic disorders
Transl Psychiatry, 2, e112
PubMed 22832956

Aas M, Steen NE, Agartz I, Aminoff SR, Lorentzen S, Sundet K, Andreassen OA, Melle I (2012)
Is cognitive impairment following early life stress in severe mental disorders based on specific or general cognitive functioning?
Psychiatry Res, 198 (3), 495-500
PubMed 22472845

Publications 2011

Agartz I, Brown AA, Rimol LM, Hartberg CB, Dale AM, Melle I, Djurovic S, Andreassen OA (2011)
Common sequence variants in the major histocompatibility complex region associate with cerebral ventricular size in schizophrenia
Biol Psychiatry, 70 (7), 696-8
PubMed 21514568

Bakken TE, Bloss CS, Roddey JC, Joyner AH, Rimol LM, Djurovic S, Melle I, Sundet K, Agartz I, Andreassen OA, Dale AM, Schork NJ (2011)
Association of genetic variants on 15q12 with cortical thickness and cognition in schizophrenia
Arch Gen Psychiatry, 68 (8), 781-90
PubMed 21810643

Berg AO, Melle I, Rossberg JI, Romm KL, Larsson S, Lagerberg TV, Andreassen OA, Hauff E (2011)
Perceived discrimination is associated with severity of positive and depression/anxiety symptoms in immigrants with psychosis: a cross-sectional study
BMC Psychiatry, 11, 77
PubMed 21548949

Bolstad A, Andreassen OA, Røssberg JI, Agartz I, Melle I, Tanum L (2011)
Previous hospital admissions and disease severity predict the use of antipsychotic combination treatment in patients with schizophrenia
BMC Psychiatry, 11, 126
PubMed 21812996

Caprini S, Saetre P, Melle I, Djurovic S, Andreassen OA, Skjødt C, Duong L, Werge T, Hall H, Agartz I, Terenius L, Jönsson EG (2011)
Lack of association between two dopamine D2 receptor gene polymorphisms and schizophrenia
Psychiatr Genet, 21 (4), 214-5
PubMed 21712758

Evensen J, Røssberg JI, Haahr U, ten Velden Hegelstad W, Joa I, Johannessen JO, Langeveld H, Larsen TK, Melle I, Opjordsmoen S, Rund BR, Simonsen E, Sundet K, Vaglum P, Friis S, McGlashan T (2011)
Contrasting monosymptomatic patients with hallucinations and delusions in first-episode psychosis patients: a five-year longitudinal follow-up study
Psychopathology, 44 (2), 90-7
PubMed 21228615

Hansen T, Ingason A, Djurovic S, Melle I, Fenger M, Gustafsson O, Jakobsen KD, Rasmussen HB, Tosato S, Rietschel M, Frank J, Owen M, Bonetto C, Suvisaari J, Thygesen JH, Pétursson H, Lönnqvist J, Sigurdsson E, Giegling I, Craddock N, O'Donovan MC, Ruggeri M, Cichon S, Ophoff RA, Pietiläinen O et al. (2011)
At-risk variant in TCF7L2 for type II diabetes increases risk of schizophrenia
Biol Psychiatry, 70 (1), 59-63
PubMed 21414605

Hartberg CB, Sundet K, Rimol LM, Haukvik UK, Lange EH, Nesvåg R, Dale AM, Melle I, Andreassen OA, Agartz I (2011)
Brain cortical thickness and surface area correlates of neurocognitive performance in patients with schizophrenia, bipolar disorder, and healthy adults
J Int Neuropsychol Soc, 17 (6), 1080-93
PubMed 22013998

Hartberg CB, Sundet K, Rimol LM, Haukvik UK, Lange EH, Nesvåg R, Melle I, Andreassen OA, Agartz I (2011)
Subcortical brain volumes relate to neurocognition in schizophrenia and bipolar disorder and healthy controls
Prog Neuropsychopharmacol Biol Psychiatry, 35 (4), 1122-30
PubMed 21457744

Haug E, Melle I, Andreassen OA, Raballo A, Bratlien U, Øie M, Lien L, Møller P (2011)
The association between anomalous self-experience and suicidality in first-episode schizophrenia seems mediated by depression
Compr Psychiatry, 53 (5), 456-60
PubMed 21871617

Haug E, Øie M, Melle I, Andreassen OA, Raballo A, Bratlien U, Lien L, Møller P (2011)
The association between self-disorders and neurocognitive dysfunction in schizophrenia
Schizophr Res, 135 (1-3), 79-83
PubMed 22137461

Hope S, Dieset I, Agartz I, Steen NE, Ueland T, Melle I, Aukrust P, Andreassen OA (2011)
Affective symptoms are associated with markers of inflammation and immune activation in bipolar disorders but not in schizophrenia
J Psychiatr Res, 45 (12), 1608-16
PubMed 21889167

Håvik B, Le Hellard S, Rietschel M, Lybæk H, Djurovic S, Mattheisen M, Mühleisen TW, Degenhardt F, Priebe L, Maier W, Breuer R, Schulze TG, Agartz I, Melle I, Hansen T, Bramham CR, Nöthen MM, Stevens B, Werge T, Andreassen OA, Cichon S, Steen VM (2011)
The complement control-related genes CSMD1 and CSMD2 associate to schizophrenia
Biol Psychiatry, 70 (1), 35-42
PubMed 21439553

Johansen R, Hestad K, Iversen VC, Agartz I, Sundet K, Andreassen OA, Melle I (2011)
Cognitive and clinical factors are associated with service engagement in early-phase schizophrenia spectrum disorders
J Nerv Ment Dis, 199 (3), 176-82
PubMed 21346488

Koefoed P, Andreassen OA, Bennike B, Dam H, Djurovic S, Hansen T, Jorgensen MB, Kessing LV, Melle I, Møller GL, Mors O, Werge T, Mellerup E (2011)
Combinations of SNPs related to signal transduction in bipolar disorder
PLoS One, 6 (8), e23812
PubMed 21897858

Lagerberg TV, Sundet K, Aminoff SR, Berg AO, Ringen PA, Andreassen OA, Melle I (2011)
Excessive cannabis use is associated with earlier age at onset in bipolar disorder
Eur Arch Psychiatry Clin Neurosci, 261 (6), 397-405
PubMed 21267743

LeBlanc M, Kulle B, Sundet K, Agartz I, Melle I, Djurovic S, Frigessi A, Andreassen OA (2011)
Genome-wide study identifies PTPRO and WDR72 and FOXQ1-SUMO1P1 interaction associated with neurocognitive function
J Psychiatr Res, 46 (2), 271-8
PubMed 22126837

Møller P, Haug E, Raballo A, Parnas J, Melle I (2011)
Examination of anomalous self-experience in first-episode psychosis: interrater reliability
Psychopathology, 44 (6), 386-90
PubMed 21847006

Olsen L, Hansen T, Djurovic S, Haastrup E, Albrecthsen A, Hoeffding LK, Secher A, Gustafsson O, Jakobsen KD, Nielsen FC, Ullum H, Morken G, Agartz I, Melle I, Gether U, Andreassen OA, Werge T (2011)
Copy number variations in affective disorders and meta-analysis
Psychiatr Genet, 21 (6), 319-22
PubMed 21451435

Pers TH, Hansen NT, Lage K, Koefoed P, Dworzynski P, Miller ML, Flint TJ, Mellerup E, Dam H, Andreassen OA, Djurovic S, Melle I, Børglum AD, Werge T, Purcell S, Ferreira MA, Kouskoumvekaki I, Workman CT, Hansen T, Mors O, Brunak S (2011)
Meta-analysis of heterogeneous data sources for genome-scale identification of risk genes in complex phenotypes
Genet Epidemiol, 35 (5), 318-32
PubMed 21484861

Romm KL, Melle I, Thoresen C, Andreassen OA, Rossberg JI (2011)
Severe social anxiety in early psychosis is associated with poor premorbid functioning, depression, and reduced quality of life
Compr Psychiatry, 53 (5), 434-40
PubMed 21821242

Romm KL, Rossberg JI, Hansen CF, Haug E, Andreassen OA, Melle I (2011)
Self-esteem is associated with premorbid adjustment and positive psychotic symptoms in early psychosis
BMC Psychiatry, 11, 136
PubMed 21854599

Schoeyen HK, Vaaler AE, Auestad BH, Malt UF, Melle I, Andreassen OA, Morken G (2011)
Despite clinical differences, bipolar disorder patients from acute wards and outpatient clinics have similar educational and disability levels compared to the general population
J Affect Disord, 132 (1-2), 209-15
PubMed 21440307

Steen NE, Lorentzen S, Barrett EA, Lagerberg TV, Hope S, Larsson S, Berg AO, Agartz I, Melle I, Berg JP, Andreassen OA (2011)
Sex-specific cortisol levels in bipolar disorder and schizophrenia during mental challenge--relationship to clinical characteristics and medication
Prog Neuropsychopharmacol Biol Psychiatry, 35 (4), 1100-7
PubMed 21420462

Steen NE, Methlie P, Lorentzen S, Hope S, Barrett EA, Larsson S, Mork E, Almås B, Løvås K, Agartz I, Melle I, Berg JP, Andreassen OA (2011)
Increased systemic cortisol metabolism in patients with schizophrenia and bipolar disorder: a mechanism for increased stress vulnerability?
J Clin Psychiatry, 72 (11), 1515-21
PubMed 21367348

Steinberg S, de Jong S, Irish Schizophrenia Genomics Consortium, Andreassen OA, Werge T, Børglum AD, Mors O, Mortensen PB, Gustafsson O, Costas J, Pietiläinen OP, Demontis D, Papiol S, Huttenlocher J, Mattheisen M, Breuer R, Vassos E, Giegling I, Fraser G, Walker N, Tuulio-Henriksson A, Suvisaari J, Lönnqvist J, Paunio T, Agartz I et al. (2011)
Common variants at VRK2 and TCF4 conferring risk of schizophrenia
Hum Mol Genet, 20 (20), 4076-81
PubMed 21791550

Tandberg M, Ueland T, Sundet K, Haahr U, Joa I, Johannessen JO, Larsen TK, Opjordsmoen S, Rund BR, Røssberg JI, Simonsen E, Vaglum P, Melle I, Friis S, McGlashan T (2011)
Neurocognition and occupational functioning in patients with first-episode psychosis: a 2-year follow-up study
Psychiatry Res, 188 (3), 334-42
PubMed 21575993

Tesli M, Koefoed P, Athanasiu L, Mattingsdal M, Gustafsson O, Agartz I, Rimol LM, Brown A, Wirgenes KV, Smorr LL, Kähler AK, Werge T, Mors O, Mellerup E, Jönsson EG, Melle I, Morken G, Djurovic S, Andreassen OA (2011)
Association analysis of ANK3 gene variants in nordic bipolar disorder and schizophrenia case-control samples
Am J Med Genet B Neuropsychiatr Genet, 156B (8), 969-74
PubMed 21972176

Vaskinn A, Sundet K, Simonsen C, Hellvin T, Melle I, Andreassen OA (2011)
Sex differences in neuropsychological performance and social functioning in schizophrenia and bipolar disorder
Neuropsychology, 25 (4), 499-510
PubMed 21463042

Aas M, Djurovic S, Athanasiu L, Steen NE, Agartz I, Lorentzen S, Sundet K, Andreassen OA, Melle I (2011)
Serotonin transporter gene polymorphism, childhood trauma, and cognition in patients with psychotic disorders
Schizophr Bull, 38 (1), 15-22
PubMed 21908796

Publications 2010

Aminoff SR, Jensen J, Lagerberg TV, Andreassen OA, Melle I (2010)
Decreased self-reported arousal in schizophrenia during aversive picture viewing compared to bipolar disorder and healthy controls
Psychiatry Res, 185 (3), 309-14
PubMed 20724003

Athanasiu L, Mattingsdal M, Kähler AK, Brown A, Gustafsson O, Agartz I, Giegling I, Muglia P, Cichon S, Rietschel M, Pietiläinen OP, Peltonen L, Bramon E, Collier D, Clair DS, Sigurdsson E, Petursson H, Rujescu D, Melle I, Steen VM, Djurovic S, Andreassen OA (2010)
Gene variants associated with schizophrenia in a Norwegian genome-wide study are replicated in a large European cohort
J Psychiatr Res, 44 (12), 748-53
PubMed 20185149

Athanasiu L, Mattingsdal M, Melle I, Inderhaug E, Lien T, Agartz I, Lorentzen S, Morken G, Andreassen OA, Djurovic S (2010)
Intron 12 in NTRK3 is associated with bipolar disorder
Psychiatry Res, 185 (3), 358-62
PubMed 20554328

Barrett EA, Sundet K, Faerden A, Agartz I, Bratlien U, Romm KL, Mork E, Rossberg JI, Steen NE, Andreassen OA, Melle I (2010)
Suicidality in first episode psychosis is associated with insight and negative beliefs about psychosis
Schizophr Res, 123 (2-3), 257-62
PubMed 20685083

Barrett EA, Sundet K, Faerden A, Nesvåg R, Agartz I, Fosse R, Mork E, Steen NE, Andreassen OA, Melle I (2010)
Suicidality before and in the early phases of first episode psychosis
Schizophr Res, 119 (1-3), 11-7
PubMed 20399077

Barrett EA, Sundet K, Simonsen C, Agartz I, Lorentzen S, Mehlum L, Mork E, Andreassen OA, Melle I (2010)
Neurocognitive functioning and suicidality in schizophrenia spectrum disorders
Compr Psychiatry, 52 (2), 156-63
PubMed 21295222

Berg AO, Melle I, Torjesen PA, Lien L, Hauff E, Andreassen OA (2010)
A cross-sectional study of vitamin D deficiency among immigrants and Norwegians with psychosis compared to the general population
J Clin Psychiatry, 71 (12), 1598-604
PubMed 20441728

Djurovic S, Gustafsson O, Mattingsdal M, Athanasiu L, Bjella T, Tesli M, Agartz I, Lorentzen S, Melle I, Morken G, Andreassen OA (2010)
A genome-wide association study of bipolar disorder in Norwegian individuals, followed by replication in Icelandic sample
J Affect Disord, 126 (1-2), 312-6
PubMed 20451256

Faerden A, Finset A, Friis S, Agartz I, Barrett EA, Nesvåg R, Andreassen OA, Marder SR, Melle I (2010)
Apathy in first episode psychosis patients: one year follow up
Schizophr Res, 116 (1), 20-6
PubMed 19948392

Hellvin T, Sundet K, Vaskinn A, Simonsen C, Ueland T, Andreassen OA, Melle I (2010)
Validation of the Norwegian version of the Social Functioning Scale (SFS) for schizophrenia and bipolar disorder
Scand J Psychol, 51 (6), 525-33
PubMed 20642739

Holtze M, Saetre P, Erhardt S, Schwieler L, Werge T, Hansen T, Nielsen J, Djurovic S, Melle I, Andreassen OA, Hall H, Terenius L, Agartz I, Engberg G, Jönsson EG, Schalling M (2010)
Kynurenine 3-monooxygenase (KMO) polymorphisms in schizophrenia: an association study
Schizophr Res, 127 (1-3), 270-2
PubMed 21030213

Hope S, Melle I, Aukrust P, Agartz I, Lorentzen S, Steen NE, Djurovic S, Ueland T, Andreassen OA (2010)
Osteoprotegerin levels in patients with severe mental disorders
J Psychiatry Neurosci, 35 (5), 304-10
PubMed 20569643

Haatveit BC, Sundet K, Hugdahl K, Ueland T, Melle I, Andreassen OA (2010)
The validity of d prime as a working memory index: results from the "Bergen n-back task"
J Clin Exp Neuropsychol, 32 (8), 871-80
PubMed 20383801

Ingason A, Giegling I, Cichon S, Hansen T, Rasmussen HB, Nielsen J, Jürgens G, Muglia P, Hartmann AM, Strengman E, Vasilescu C, Mühleisen TW, Djurovic S, Melle I, Lerer B, Möller HJ, Francks C, Pietiläinen OP, Lonnqvist J, Suvisaari J, Tuulio-Henriksson A, Walshe M, Vassos E, Di Forti M, Murray R et al. (2010)
A large replication study and meta-analysis in European samples provides further support for association of AHI1 markers with schizophrenia
Hum Mol Genet, 19 (7), 1379-86
PubMed 20071346

Johannessen JO, Joa I, Auestad B, Haahr U, Larsen TK, Melle I, Opjordsmoen S, Simonsen P, Rund BR, Simonsen E, Vaglum P, Friis S, McGlashan T (2010)
First-episode psychosis patients recruited into treatment via early detection teams versus ordinary pathways: course and health service use during 5 years
Early Interv Psychiatry, 5 (1), 70-5
PubMed 21272278

Kähler AK, Djurovic S, Rimol LM, Brown AA, Athanasiu L, Jönsson EG, Hansen T, Gústafsson O, Hall H, Giegling I, Muglia P, Cichon S, Rietschel M, Pietiläinen OP, Peltonen L, Bramon E, Collier D, St Clair D, Sigurdsson E, Petursson H, Rujescu D, Melle I, Werge T, Steen VM, Dale AM et al. (2010)
Candidate gene analysis of the human natural killer-1 carbohydrate pathway and perineuronal nets in schizophrenia: B3GAT2 is associated with disease risk and cortical surface area
Biol Psychiatry, 69 (1), 90-6
PubMed 20950796

Kähler AK, Otnaess MK, Wirgenes KV, Hansen T, Jönsson EG, Agartz I, Hall H, Werge T, Morken G, Mors O, Mellerup E, Dam H, Koefod P, Melle I, Steen VM, Andreassen OA, Djurovic S (2010)
Association study of PDE4B gene variants in Scandinavian schizophrenia and bipolar disorder multicenter case-control samples
Am J Med Genet B Neuropsychiatr Genet, 153B (1), 86-96
PubMed 19350560

Lagerberg TV, Andreassen OA, Ringen PA, Berg AO, Larsson S, Agartz I, Sundet K, Melle I (2010)
Excessive substance use in bipolar disorder is associated with impaired functioning rather than clinical characteristics, a descriptive study
BMC Psychiatry, 10, 9
PubMed 20105311

Lagerberg TV, Larsson S, Sundet K, Hansen CB, Hellvin T, Andreassen OA, Melle I (2010)
Treatment delay and excessive substance use in bipolar disorder
J Nerv Ment Dis, 198 (9), 628-33
PubMed 20823723

Larsen TK, Melle I, Auestad B, Haahr U, Joa I, Johannessen JO, Opjordsmoen S, Rund BR, Rossberg JI, Simonsen E, Vaglum P, Friis S, McGlashan T (2010)
Early detection of psychosis: positive effects on 5-year outcome
Psychol Med, 41 (7), 1461-9
PubMed 20942996

Melle I, Johannessen JO, Friis S, Haahr U, Joa I, Larsen TK, Opjordsmoen S, Rund BR, Simonsen E, Vaglum P, McGlashan T (2010)
Course and predictors of suicidality over the first two years of treatment in first-episode schizophrenia spectrum psychosis
Arch Suicide Res, 14 (2), 158-70
PubMed 20455151

Melle I, Røssberg JI, Joa I, Friis S, Haahr U, Johannessen JO, Larsen TK, Opjordsmoen S, Rund BR, Simonsen E, Vaglum P, McGlashan T (2010)
The development of subjective quality of life over the first 2 years in first-episode psychosis
J Nerv Ment Dis, 198 (12), 864-9
PubMed 21135636

Nesvåg R, Lange EH, Faerden A, Barrett EA, Emilsson B, Ringen PA, Andreassen OA, Melle I, Agartz I (2010)
The use of screening instruments for detecting alcohol and other drug use disorders in first-episode psychosis
Psychiatry Res, 177 (1-2), 228-34
PubMed 20178887

Opjordsmoen S, Friis S, Melle I, Haahr U, Johannessen JO, Larsen TK, Røssberg JI, Rund BR, Simonsen E, Vaglum P, McGlashan TH (2010)
A 2-year follow-up of involuntary admission's influence upon adherence and outcome in first-episode psychosis
Acta Psychiatr Scand, 121 (5), 371-6
PubMed 20085554

Rimol LM, Hartberg CB, Nesvåg R, Fennema-Notestine C, Hagler DJ, Pung CJ, Jennings RG, Haukvik UK, Lange E, Nakstad PH, Melle I, Andreassen OA, Dale AM, Agartz I (2010)
Cortical thickness and subcortical volumes in schizophrenia and bipolar disorder
Biol Psychiatry, 68 (1), 41-50
PubMed 20609836

Romm KL, Rossberg JI, Berg AO, Barrett EA, Faerden A, Agartz I, Andreassen OA, Melle I (2010)
Depression and depressive symptoms in first episode psychosis
J Nerv Ment Dis, 198 (1), 67-71
PubMed 20061872

Romm KL, Rossberg JI, Berg AO, Hansen CF, Andreassen OA, Melle I (2010)
Assessment of social anxiety in first episode psychosis using the Liebowitz Social Anxiety scale as a self-report measure
Eur Psychiatry, 26 (2), 115-21
PubMed 21036553

Rossberg JI, Johannessen JO, Klungsoyr O, Opjordsmoen S, Evensen J, Fjell A, Haahr U, Joa I, Langeveld J, Larsen TK, Melle I, Rund BR, Simonsen E, ten Velden W, Vaglum P, Friis S, McGlashan T (2010)
Are multi family groups appropriate for patients with first episode psychosis? A 5-year naturalistic follow-up study
Acta Psychiatr Scand, 122 (5), 384-94
PubMed 20491714

Saetre P, Lundmark P, Wang A, Hansen T, Rasmussen HB, Djurovic S, Melle I, Andreassen OA, Werge T, Agartz I, Hall H, Terenius L, Jönsson EG (2010)
The tryptophan hydroxylase 1 (TPH1) gene, schizophrenia susceptibility, and suicidal behavior: a multi-centre case-control study and meta-analysis
Am J Med Genet B Neuropsychiatr Genet, 153B (2), 387-396
PubMed 19526457

Sagen U, Faerden A, Haug T, Melle I, Finset A, Dammen T (2010)
Are there common core features of apathy in different neuropsychiatric samples as assessed by the Apathy Evaluation Scale?
Nord J Psychiatry, 64 (1), 49-57
PubMed 19883192

Simonsen C, Sundet K, Vaskinn A, Ueland T, Romm KL, Hellvin T, Melle I, Friis S, Andreassen OA (2010)
Psychosocial function in schizophrenia and bipolar disorder: Relationship to neurocognition and clinical symptoms
J Int Neuropsychol Soc, 16 (5), 771-83
PubMed 20509984

Simonsen E, Friis S, Opjordsmoen S, Mortensen EL, Haahr U, Melle I, Joa I, Johannessen JO, Larsen TK, Røssberg JI, Rund BR, Vaglum P, McGlashan TH (2010)
Early identification of non-remission in first-episode psychosis in a two-year outcome study
Acta Psychiatr Scand, 122 (5), 375-83
PubMed 20722632

Steen NE, Tesli M, Kähler AK, Methlie P, Hope S, Barrett EA, Larsson S, Mork E, Løvås K, Røssberg JI, Agartz I, Melle I, Djurovic S, Lorentzen S, Berg JP, Andreassen OA (2010)
SRD5A2 is associated with increased cortisol metabolism in schizophrenia spectrum disorders
Prog Neuropsychopharmacol Biol Psychiatry, 34 (8), 1500-6
PubMed 20800085

Steinberg S, Mors O, Børglum AD, Gustafsson O, Werge T, Mortensen PB, Andreassen OA, Sigurdsson E, Thorgeirsson TE, Böttcher Y, Olason P, Ophoff RA, Cichon S, Gudjonsdottir IH, Pietiläinen OP, Nyegaard M, Tuulio-Henriksson A, Ingason A, Hansen T, Athanasiu L, Suvisaari J, Lonnqvist J, Paunio T, Hartmann A, Jürgens G et al. (2010)
Expanding the range of ZNF804A variants conferring risk of psychosis
Mol Psychiatry, 16 (1), 59-66
PubMed 20048749

Tesli M, Athanasiu L, Mattingsdal M, Kähler AK, Gustafsson O, Andreassen BK, Werge T, Hansen T, Mors O, Mellerup E, Koefoed P, Jönsson EG, Agartz I, Melle I, Morken G, Djurovic S, Andreassen OA (2010)
Association analysis of PALB2 and BRCA2 in bipolar disorder and schizophrenia in a scandinavian case-control sample
Am J Med Genet B Neuropsychiatr Genet, 153B (7), 1276-82
PubMed 20872766

Vares M, Saetre P, Deng H, Cai G, Liu X, Hansen T, Rasmussen HB, Werge T, Melle I, Djurovic S, Andreassen OA, Agartz I, Hall H, Terenius L, Jönsson EG (2010)
Association between methylenetetrahydrofolate reductase (MTHFR) C677T polymorphism and age of onset in schizophrenia
Am J Med Genet B Neuropsychiatr Genet, 153B (2), 610-618
PubMed 19746410

Wirgenes KV, Djurovic S, Sundet K, Agartz I, Mattingsdal M, Athanasiu L, Melle I, Andreassen OA (2010)
Catechol O-methyltransferase variants and cognitive performance in schizophrenia and bipolar disorder versus controls
Schizophr Res, 122 (1-3), 31-7
PubMed 20605701

Publications 2009

Andreou D, Saetre P, Lundmark P, Hansen T, Timm S, Melle I, Djurovic S, Andreassen OA, Werge T, Hall H, Agartz I, Terenius L, Jönsson EG (2009)
Tyrosine hydroxylase Val81Met polymorphism: lack of association with schizophrenia
Psychiatr Genet, 19 (5), 273-4
PubMed 19491717

Djurovic S, Le Hellard S, Kähler AK, Jönsson EG, Agartz I, Steen VM, Hall H, Wang AG, Rasmussen HB, Melle I, Werge T, Andreassen OA (2009)
Association of MCTP2 gene variants with schizophrenia in three independent samples of Scandinavian origin (SCOPE)
Psychiatry Res, 168 (3), 256-8
PubMed 19223264

Faerden A, Friis S, Agartz I, Barrett EA, Nesvåg R, Finset A, Melle I (2009)
Apathy and functioning in first-episode psychosis
Psychiatr Serv, 60 (11), 1495-503
PubMed 19880468

Faerden A, Vaskinn A, Finset A, Agartz I, Ann Barrett E, Friis S, Simonsen C, Andreassen OA, Melle I (2009)
Apathy is associated with executive functioning in first episode psychosis
BMC Psychiatry, 9, 1
PubMed 19133132

Hansen CF, Torgalsbøen AK, Melle I, Bell MD (2009)
Passive/apathetic social withdrawal and active social avoidance in schizophrenia: difference in underlying psychological processes
J Nerv Ment Dis, 197 (4), 274-7
PubMed 19363384

Holmén A, Juuhl-Langseth M, Thormodsen R, Melle I, Rund BR (2009)
Neuropsychological profile in early-onset schizophrenia-spectrum disorders: measured with the MATRICS battery
Schizophr Bull, 36 (4), 852-9
PubMed 19223656

Hope S, Melle I, Aukrust P, Steen NE, Birkenaes AB, Lorentzen S, Agartz I, Ueland T, Andreassen OA (2009)
Similar immune profile in bipolar disorder and schizophrenia: selective increase in soluble tumor necrosis factor receptor I and von Willebrand factor
Bipolar Disord, 11 (7), 726-34
PubMed 19839997

Joa I, Johannessen JO, Langeveld J, Friis S, Melle I, Opjordsmoen S, Simonsen E, Vaglum P, McGlashan T, Larsen TK (2009)
Baseline profiles of adolescent vs. adult-onset first-episode psychosis in an early detection program
Acta Psychiatr Scand, 119 (6), 494-500
PubMed 19207132

Joyner AH, J CR, Bloss CS, Bakken TE, Rimol LM, Melle I, Agartz I, Djurovic S, Topol EJ, Schork NJ, Andreassen OA, Dale AM (2009)
A common MECP2 haplotype associates with reduced cortical surface area in humans in two independent populations
Proc Natl Acad Sci U S A, 106 (36), 15483-8
PubMed 19717458

Jönsson EG, Saetre P, Vares M, Andreou D, Larsson K, Timm S, Rasmussen HB, Djurovic S, Melle I, Andreassen OA, Agartz I, Werge T, Hall H, Terenius L (2009)
DTNBP1, NRG1, DAOA, DAO and GRM3 polymorphisms and schizophrenia: an association study
Neuropsychobiology, 59 (3), 142-50
PubMed 19439994

Larsson S, Lorentzen S, Mork E, Barrett EA, Steen NE, Lagerberg TV, Berg AO, Aminoff SR, Agartz I, Melle I, Andreassen OA (2009)
Age at onset of bipolar disorder in a Norwegian catchment area sample
J Affect Disord, 124 (1-2), 174-7
PubMed 19931918

Opjordsmoen S, Melle I, Friis S, Haahr U, Johannessen JO, Larsen TK, Rund BR, Simonsen E, Vaglum P, McGlashan TH (2009)
Stability of medication in early psychosis: a comparison between second-generation and low-dose first-generation antipsychotics
Early Interv Psychiatry, 3 (1), 58-65
PubMed 21352176

Otnaess MK, Djurovic S, Rimol LM, Kulle B, Kähler AK, Jönsson EG, Agartz I, Sundet K, Hall H, Timm S, Hansen T, Callicott JH, Melle I, Werge T, Andreassen OA (2009)
Evidence for a possible association of neurotrophin receptor (NTRK-3) gene polymorphisms with hippocampal function and schizophrenia
Neurobiol Dis, 34 (3), 518-24
PubMed 19344762

Rimol LM, Agartz I, Djurovic S, Brown AA, Roddey JC, Kähler AK, Mattingsdal M, Athanasiu L, Joyner AH, Schork NJ, Halgren E, Sundet K, Melle I, Dale AM, Andreassen OA, Alzheimer's Disease Neuroimaging Initiative (2009)
Sex-dependent association of common variants of microcephaly genes with brain structure
Proc Natl Acad Sci U S A, 107 (1), 384-8
PubMed 20080800

Ringen PA, Vaskinn A, Sundet K, Engh JA, Jónsdóttir H, Simonsen C, Friis S, Opjordsmoen S, Melle I, Andreassen OA (2009)
Opposite relationships between cannabis use and neurocognitive functioning in bipolar disorder and schizophrenia
Psychol Med, 40 (8), 1337-47
PubMed 19891810

Simonsen C, Sundet K, Vaskinn A, Birkenaes AB, Engh JA, Faerden A, Jónsdóttir H, Ringen PA, Opjordsmoen S, Melle I, Friis S, Andreassen OA (2009)
Neurocognitive dysfunction in bipolar and schizophrenia spectrum disorders depends on history of psychosis rather than diagnostic group
Schizophr Bull, 37 (1), 73-83
PubMed 19443616

Stefansson H, Ophoff RA, Steinberg S, Andreassen OA, Cichon S, Rujescu D, Werge T, Pietiläinen OP, Mors O, Mortensen PB, Sigurdsson E, Gustafsson O, Nyegaard M, Tuulio-Henriksson A, Ingason A, Hansen T, Suvisaari J, Lonnqvist J, Paunio T, Børglum AD, Hartmann A, Fink-Jensen A, Nordentoft M, Hougaard D, Norgaard-Pedersen B et al. (2009)
Common variants conferring risk of schizophrenia
Nature, 460 (7256), 744-7
PubMed 19571808

Tesli M, Kähler AK, Andreassen BK, Werge T, Mors O, Mellerup E, Koefoed P, Melle I, Morken G, Wirgenes KV, Andreassen OA, Djurovic S (2009)
No association between DGKH and bipolar disorder in a Scandinavian case-control sample
Psychiatr Genet, 19 (5), 269-72
PubMed 19478689

Welander-Vatn AS, Jensen J, Lycke C, Agartz I, Server A, Gadmar ØB, Melle I, Nakstad PH, Andreassen OA (2009)
No altered dorsal anterior cingulate activation in bipolar II disorder patients during a Go/No-go task: an fMRI study
Bipolar Disord, 11 (3), 270-9
PubMed 19419384

Wirgenes KV, Djurovic S, Agartz I, Jonsson EG, Werge T, Melle I, Andreassen OA (2009)
Dysbindin and d-amino-acid-oxidase gene polymorphisms associated with positive and negative symptoms in schizophrenia
Neuropsychobiology, 60 (1), 31-6
PubMed 19729970

Publications 2008

Djurovic S, Kähler AK, Kulle B, Jönsson EG, Agartz I, Le Hellard S, Hall H, Jakobsen KD, Hansen T, Melle I, Werge T, Steen VM, Andreassen OA (2008)
A possible association between schizophrenia and GRIK3 polymorphisms in a multicenter sample of Scandinavian origin (SCOPE)
Schizophr Res, 107 (2-3), 242-8
PubMed 19022628

Haahr U, Friis S, Larsen TK, Melle I, Johannessen JO, Opjordsmoen S, Simonsen E, Rund BR, Vaglum P, McGlashan T (2008)
First-episode psychosis: diagnostic stability over one and two years
Psychopathology, 41 (5), 322-9
PubMed 18635935

Kähler AK, Djurovic S, Kulle B, Jönsson EG, Agartz I, Hall H, Opjordsmoen S, Jakobsen KD, Hansen T, Melle I, Werge T, Steen VM, Andreassen OA (2008)
Association analysis of schizophrenia on 18 genes involved in neuronal migration: MDGA1 as a new susceptibility gene
Am J Med Genet B Neuropsychiatr Genet, 147B (7), 1089-100
PubMed 18384059

Le Hellard S, Mühleisen TW, Djurovic S, Fernø J, Ouriaghi Z, Mattheisen M, Vasilescu C, Raeder MB, Hansen T, Strohmaier J, Georgi A, Brockschmidt FF, Melle I, Nenadic I, Sauer H, Rietschel M, Nöthen MM, Werge T, Andreassen OA, Cichon S, Steen VM (2008)
Polymorphisms in SREBF1 and SREBF2, two antipsychotic-activated transcription factors controlling cellular lipogenesis, are associated with schizophrenia in German and Scandinavian samples
Mol Psychiatry, 15 (5), 463-72
PubMed 18936756

Melle I, Larsen TK, Haahr U, Friis S, Johannesen JO, Opjordsmoen S, Rund BR, Simonsen E, Vaglum P, McGlashan T (2008)
Prevention of negative symptom psychopathologies in first-episode schizophrenia: two-year effects of reducing the duration of untreated psychosis
Arch Gen Psychiatry, 65 (6), 634-40
PubMed 18519821

Olsen L, Hansen T, Jakobsen KD, Djurovic S, Melle I, Agartz I, Hall H, Ullum H, Timm S, Wang AG, Jönsson EG, Andreassen OA, Werge T (2008)
The estrogen hypothesis of schizophrenia implicates glucose metabolism: association study in three independent samples
BMC Med Genet, 9, 39
PubMed 18460190

Ringen PA, Melle I, Birkenaes AB, Engh JA, Faerden A, Vaskinn A, Friis S, Opjordsmoen S, Andreassen OA (2008)
The level of illicit drug use is related to symptoms and premorbid functioning in severe mental illness
Acta Psychiatr Scand, 118 (4), 297-304
PubMed 18759810

Rossberg JI, Melle I, Opjordsmoen S, Friis S (2008)
The relationship between staff members' working conditions and patients' perceptions of the treatment environment
Int J Soc Psychiatry, 54 (5), 437-46
PubMed 18786905

Rujescu D, Ingason A, Cichon S, Pietiläinen OP, Barnes MR, Toulopoulou T, Picchioni M, Vassos E, Ettinger U, Bramon E, Murray R, Ruggeri M, Tosato S, Bonetto C, Steinberg S, Sigurdsson E, Sigmundsson T, Petursson H, Gylfason A, Olason PI, Hardarsson G, Jonsdottir GA, Gustafsson O, Fossdal R, Giegling I et al. (2008)
Disruption of the neurexin 1 gene is associated with schizophrenia
Hum Mol Genet, 18 (5), 988-96
PubMed 18945720

Simonsen E, Haahr U, Mortensen EL, Friis S, Johannessen JO, Larsen TK, Melle I, Opjordsmoen S, Rund BR, McGlashan T, Vaglum P (2008)
Personality disorders in first-episode psychosis
Personal. Ment. Health, 2 (4), 230-239

Stefansson H, Rujescu D, Cichon S, Pietiläinen OP, Ingason A, Steinberg S, Fossdal R, Sigurdsson E, Sigmundsson T, Buizer-Voskamp JE, Hansen T, Jakobsen KD, Muglia P, Francks C, Matthews PM, Gylfason A, Halldorsson BV, Gudbjartsson D, Thorgeirsson TE, Sigurdsson A, Jonasdottir A, Jonasdottir A, Bjornsson A, Mattiasdottir S, Blondal T et al. (2008)
Large recurrent microdeletions associated with schizophrenia
Nature, 455 (7210), 232-6
PubMed 18668039

Publications 2007

Faerden A, Nesvåg R, Barrett EA, Agartz I, Finset A, Friis S, Rossberg JI, Melle I (2007)
Assessing apathy: the use of the Apathy Evaluation Scale in first episode psychosis
Eur Psychiatry, 23 (1), 33-9
PubMed 18029152

Fjell A, Bloch Thorsen GR, Friis S, Johannessen JO, Larsen TK, Lie K, Lyse HG, Melle I, Simonsen E, Smeby NA, Øxnevad AL, McFarlane WR, Vaglum P, McGlashan T (2007)
Multifamily group treatment in a program for patients with first-episode psychosis: experiences from the TIPS project
Psychiatr Serv, 58 (2), 171-3
PubMed 17287370

Hansen T, Olsen L, Lindow M, Jakobsen KD, Ullum H, Jonsson E, Andreassen OA, Djurovic S, Melle I, Agartz I, Hall H, Timm S, Wang AG, Werge T (2007)
Brain expressed microRNAs implicated in schizophrenia etiology
PLoS One, 2 (9), e873
PubMed 17849003

Joa I, Johannessen JO, Auestad B, Friis S, McGlashan T, Melle I, Opjordsmoen S, Simonsen E, Vaglum P, Larsen TK (2007)
The key to reducing duration of untreated first psychosis: information campaigns
Schizophr Bull, 34 (3), 466-72
PubMed 17905788

Johannessen JO, Friis S, Joa I, Haahr U, Larsen TK, Melle I, Opjordsmoen S, Rund BR, Simonsen E, Vaglum P, McGlashan T (2007)
First-episode psychosis patients recruited into treatment via early detection teams versus ordinary pathways: course, outcome and health service use during first 2 years
Early Interv Psychiatry, 1 (1), 40-8
PubMed 21352107

Larsen TK, Melle I, Friis S, Joa I, Johannessen JO, Opjordsmoen S, Simonsen E, Vaglum P, McGlashan TH (2007)
One-year effect of changing duration of untreated psychosis in a single catchment area
Br J Psychiatry Suppl, 51, s128-32
PubMed 18055929

Ringen PA, Lagerberg TV, Birkenaes AB, Engn J, Faerden A, Jónsdottir H, Nesvåg R, Friis S, Opjordsmoen S, Larsen F, Melle I, Andreassen OA (2007)
Differences in prevalence and patterns of substance use in schizophrenia and bipolar disorder
Psychol Med, 38 (9), 1241-9
PubMed 18070373

Ringen PA, Melle I, Birkenaes AB, Engh JA, Faerden A, Jónsdóttir H, Nesvåg R, Vaskinn A, Friis S, Larsen F, Opjordsmoen S, Sundet K, Andreassen OA (2007)
Illicit drug use in patients with psychotic disorders compared with that in the general population: a cross-sectional study
Acta Psychiatr Scand, 117 (2), 133-8
PubMed 18081921

Rund BR, Melle I, Friis S, Johannessen JO, Larsen TK, Midbøe LJ, Opjordsmoen S, Simonsen E, Vaglum P, McGlashan T (2007)
The course of neurocognitive functioning in first-episode psychosis and its relation to premorbid adjustment, duration of untreated psychosis, and relapse
Schizophr Res, 91 (1-3), 132-40
PubMed 17258891

Simonsen E, Friis S, Haahr U, Johannessen JO, Larsen TK, Melle I, Opjordsmoen S, Rund BR, Vaglum P, McGlashan T (2007)
Clinical epidemiologic first-episode psychosis: 1-year outcome and predictors
Acta Psychiatr Scand, 116 (1), 54-61
PubMed 17559601

Publications 2006

Larsen TK, Melle I, Auestad B, Friis S, Haahr U, Johannessen JO, Opjordsmoen S, Rund BR, Simonsen E, Vaglum P, McGlashan T (2006)
Early detection of first-episode psychosis: the effect on 1-year outcome
Schizophr Bull, 32 (4), 758-64
PubMed 16809640

Larsen TK, Melle I, Auestad B, Friis S, Haahr U, Johannessen JO, Opjordsmoen S, Rund BR, Simonsen E, Vaglum P, McGlashan TH (2006)
Substance abuse in first-episode non-affective psychosis
Schizophr Res, 88 (1-3), 55-62
PubMed 16971092

Melle I, Johannesen JO, Friis S, Haahr U, Joa I, Larsen TK, Opjordsmoen S, Rund BR, Simonsen E, Vaglum P, McGlashan T (2006)
Early detection of the first episode of schizophrenia and suicidal behavior
Am J Psychiatry, 163 (5), 800-4
PubMed 16648319

Røssberg JI, Melle I, Opjordsmoen S, Friis S (2006)
Patient satisfaction and treatment environment: a 20-year follow-up study from an acute psychiatric ward
Nord J Psychiatry, 60 (2), 176-80
PubMed 16635939

Publications 2005

Friis S, Vaglum P, Haahr U, Johannessen JO, Larsen TK, Melle I, Opjordsmoen S, Rund BR, Simonsen E, McGlashan TH (2005)
Effect of an early detection programme on duration of untreated psychosis: part of the Scandinavian TIPS study
Br J Psychiatry Suppl, 48, s29-32
PubMed 16055804

Johannessen JO, Larsen TK, Joa I, Melle I, Friis S, Opjordsmoen S, Rund BR, Simonsen E, Vaglum P, McGlashan TH (2005)
Pathways to care for first-episode psychosis in an early detection healthcare sector: part of the Scandinavian TIPS study
Br J Psychiatry Suppl, 48, s24-8
PubMed 16055803

Melle I, Friis S, Haahr U, Johannesen JO, Larsen TK, Opjordsmoen S, Roessberg JI, Rund BR, Simonsen E, Vaglum P, McGlashan T (2005)
Measuring quality of life in first-episode psychosis
Eur Psychiatry, 20 (7), 474-83
PubMed 15967642

Melle I, Haahr U, Friis S, Hustoft K, Johannessen JO, Larsen TK, Opjordsmoen S, Rund BR, Simonsen E, Vaglum P, McGlashan T (2005)
Reducing the duration of untreated first-episode psychosis -- effects on baseline social functioning and quality of life
Acta Psychiatr Scand, 112 (6), 469-73
PubMed 16279877

Publications 2004

Friis S, Melle I, Larsen TK, Haahr U, Johannessen JO, Simonsen E, Opjordsmoen S, Vaglum P, McGlashan TH (2004)
Does duration of untreated psychosis bias study samples of first-episode psychosis?
Acta Psychiatr Scand, 110 (4), 286-91
PubMed 15352930

Larsen TK, Friis S, Haahr U, Johannessen JO, Melle I, Opjordsmoen S, Rund BR, Simonsen E, Vaglum PV, McGlashan TH (2004)
Premorbid adjustment in first-episode non-affective psychosis: distinct patterns of pre-onset course
Br J Psychiatry, 185, 108-15
PubMed 15286061

Melle I, Larsen TK, Haahr U, Friis S, Johannessen JO, Opjordsmoen S, Simonsen E, Rund BR, Vaglum P, McGlashan T (2004)
Reducing the duration of untreated first-episode psychosis: effects on clinical presentation
Arch Gen Psychiatry, 61 (2), 143-50
PubMed 14757590

Rund BR, Melle I, Friis S, Larsen TK, Midbøe LJ, Opjordsmoen S, Simonsen E, Vaglum P, McGlashan T (2004)
Neurocognitive dysfunction in first-episode psychosis: correlates with symptoms, premorbid adjustment, and duration of untreated psychosis
Am J Psychiatry, 161 (3), 466-72
PubMed 14992972

Publications 2003

Friis S, Larsen TK, Melle I (2003)
[Therapy of psychoses]
Tidsskr Nor Laegeforen, 123 (10), 1393
PubMed 12806685

Friis S, Larsen TK, Melle I, Opjordsmoen S, Johannessen JO, Haahr U, Simonsen E, Rund BR, Vaglum P, McGlashan T (2003)
Methodological pitfalls in early detection studies - the NAPE Lecture 2002. Nordic Association for Psychiatric Epidemiology
Acta Psychiatr Scand, 107 (1), 3-9
PubMed 12558535

Publications 2002

Hauff E, Varvin S, Laake P, Melle I, Vaglum P, Friis S (2002)
Inpatient psychotherapy compared with usual care for patients who have schizophrenic psychoses
Psychiatr Serv, 53 (4), 471-3
PubMed 11919362

Melle I, Johansen R (2002)
[The invisible children--when mother or father have schizophrenia]
Tidsskr Nor Laegeforen, 122 (23), 2299-302
PubMed 12448273

Publications 2001

Johannessen JO, McGlashan TH, Larsen TK, Horneland M, Joa I, Mardal S, Kvebaek R, Friis S, Melle I, Opjordsmoen S, Simonsen E, Ulrik H, Vaglum P (2001)
Early detection strategies for untreated first-episode psychosis
Schizophr Res, 51 (1), 39-46
PubMed 11479064

Larsen TK, Friis S, Haahr U, Joa I, Johannessen JO, Melle I, Opjordsmoen S, Simonsen E, Vaglum P (2001)
Early detection and intervention in first-episode schizophrenia: a critical review
Acta Psychiatr Scand, 103 (5), 323-34
PubMed 11380302

Larsen TK, McGlashan TH, Johannessen JO, Friis S, Guldberg C, Haahr U, Horneland M, Melle I, Moe LC, Opjordsmoen S, Simonsen E, Vaglum P (2001)
Shortened duration of untreated first episode of psychosis: changes in patient characteristics at treatment
Am J Psychiatry, 158 (11), 1917-9
PubMed 11691702

Publications 2000

Melle I, Friis S, Hauff E, Vaglum P (2000)
Patients with schizophrenia after the acute ward: Seven years' service utilization and clinical course
Nord. J. Psychiatr., 54 (1), 47-54

Melle I, Friis S, Hauff E, Vaglum P (2000)
Social functioning of patients with schizophrenia in high-income welfare societies
Psychiatr Serv, 51 (2), 223-8
PubMed 10655007

Publications 1996

Melle I, Friis S, Hauff E, Island TK, Lorentzen S, Vaglum P (1996)
The importance of ward atmosphere in inpatient treatment of schizophrenia on short-term units
Psychiatr Serv, 47 (7), 721-6
PubMed 8807685

Publications 1991

Friis S, Hauff E, Island TK, Lorentzen S, Melle I, Vaglum P (1991)
The Ullevål acute ward follow-up study: a personal 7-year follow-up of patients with functional psychosis admitted to the acute ward of a catchment area
Psychopathology, 24 (5), 316-27
PubMed 1784708

FRIIS S, HAUFF E, ISLAND TK, LORENTZEN S, MELLE I, VAGLUM P (1991)
THE ULLEVAL ACUTE WARD FOLLOW-UP-STUDY - A PERSONAL 7-YEAR FOLLOW-UP OF PATIENTS WITH FUNCTIONAL-PSYCHOSIS ADMITTED TO THE ACUTE WARD OF A CATCHMENT-AREA
Psychopathology, 24 (5), 316-327