• Characterising the shared genetic determinants of bipolar disorder, schizophrenia and risk-taking 

      Hindley, Guy Frederick Lanyon; Bahrami, Shahram; Steen, Nils Eiel; O'Connell, Kevin Sean; Frei, Oleksandr; Shadrin, Alexey; Bettella, Francesco; Rødevand, Linn; Fan, Chun-Chieh; Dale, Anders; Djurovic, Srdjan; Smeland, Olav Bjerkehagen; Andreassen, Ole (Journal article; Peer reviewed, 2021)
      Increased risk-taking is a central component of bipolar disorder (BIP) and is implicated in schizophrenia (SCZ). Risky behaviours, including smoking and alcohol use, are overrepresented in both disorders and associated ...
    • Dissecting the shared genetic basis of migraine and mental disorders using novel statistical tools 

      Bahrami, Shahram; Hindley, Guy Frederick Lanyon; Winsvold, Bendik K S; O'Connell, Kevin S; Frei, Oleksandr; Shadrin, Alexey; Cheng, Weiqiu; Bettella, Francesco; Rødevand, Linn; Ødegaard, Ketil Joachim; Fan, Chun C; Pirinen, Matti J; Hautakangas, Heidi M; Martinsen, Amy; Skogholt, Anne Heidi; Brumpton, Ben Michael; Willer, Cristen J; Tronvik, Erling Andreas; Kristoffersen, Espen Saxhaug; Zwart, John Anker Henrik; Nielsen, Jonas Bille; Hagen, Knut; Nilsen, Kristian Bernhard; Hveem, Kristian; Stovner, Lars Jacob; Fritsche, Lars; Thomas, Laurent; Pedersen, Linda Margareth; Gabrielsen, Maiken Elvestad; Johnsen, Marianne Bakke; Lie, Marie; Holmen, Oddgeir Lingaas; Børte, Sigrid; Stensland, Synne; Zhou, Wei; Dale, Anders; Djurovic, Srdjan; Smeland, Olav Bjerkehagen; Andreassen, Ole (Journal article; Peer reviewed, 2022)
      Migraine is three times more prevalent in people with bipolar disorder or depression. The relationship between schizophrenia and migraine is less certain although glutamatergic and serotonergic neurotransmission are ...
    • Extensive bidirectional genetic overlap between bipolar disorder and cardiovascular disease phenotypes 

      Rødevand, Linn; Bahrami, Shahram; Frei, Oleksandr; Chu, Yunhan; Shadrin, Alexey A.; O'Connell, Kevin S.; Smeland, Olav Bjerkehagen; Elvsåshagen, Torbjørn; Hindley, Guy Frederick Lanyon; Djurovic, Srdjan; Dale, Anders; Lagerberg, Trine Vik; Steen, Nils Eiel; Andreassen, Ole Andreas (Journal article; Peer reviewed, 2021)
      Patients with bipolar disorder (BIP) have a high risk of cardiovascular disease (CVD), despite considerable individual variation. The mechanisms underlying comorbid CVD in BIP remain largely unknown. We investigated polygenic ...
    • Genome-wide analyses reveal novel opioid use disorder loci and genetic overlap with schizophrenia, bipolar disorder, and major depression 

      Holen, Børge; Shadrin, Alexey; Icick, Romain; Filiz, Tahir Tekin; Hindley, Guy Frederick Lanyon; Rødevand, Linn; O'Connell, Kevin Sean; Hagen, Espen; Frei, Oleksandr; Bahrami, Shahram; Cheng, Weiqiu; Parker, Nadine; Woldeyohannes, Markos Tesfaye; Jaholkowski, Piotr Pawel; Karadag, Naz; Dale, Anders M; Djurovic, Srdjan; Smeland, Olav Bjerkehagen; Andreassen, Ole (Journal article; Peer reviewed, 2023)
      Opioid use disorder (OUD) and mental disorders are often comorbid, with increased morbidity and mortality. The causes underlying this relationship are poorly understood. Although these conditions are highly heritable, their ...
    • Genome-wide analysis reveals genetic overlap between alcohol use behaviours, schizophrenia and bipolar disorder and identifies novel shared risk loci 

      Wiström, Erik David; O'Connell, Kevin Sean; Karadag, Naz; Bahrami, Shahram; Hindley, Guy Frederick Lanyon; Lin, Aihua; Cheng, Weiqiu; Steen, Nils Eiel; Shadrin, Alexey; Frei, Oleksandr; Djurovic, Srdjan; Dale, Anders M.; Andreassen, Ole A.; Smeland, Olav Bjerkehagen (Journal article; Peer reviewed, 2022)
      Background and aim Schizophrenia (SCZ) and bipolar disorder (BD) have a high comorbidity of alcohol use disorder (AUD), and both comorbid AUD and excessive alcohol consumption (AC) have been linked to greater illness ...
    • Identification of novel genomic risk loci shared between common epilepsies and psychiatric disorders 

      Karadag, Naz; Shadrin, Alexey; O'Connell, Kevin S; Hindley, Guy Frederick Lanyon; Rahman, Zillur; Parker, Nadine; Bahrami, Shahram; Fominykh, Vera; Cheng, Weiqiu; Holen, Børge; Alvestad, Silje; Taubøll, Erik; Steen, Nils Eiel; Djurovic, Srdjan; Dale, Anders M; Frei, Oleksandr; Andreassen, Ole; Smeland, Olav Bjerkehagen (Journal article; Peer reviewed, 2023)
      Psychiatric disorders and common epilepsies are heritable disorders with a high comorbidity and overlapping symptoms. However, the causative mechanisms underlying this relationship are poorly understood. Here we aimed to ...
    • Polygenic overlap and shared genetic loci between loneliness, severe mental disorders, and cardiovascular disease risk factors suggest shared molecular mechanisms 

      Rødevand, Linn; Bahrami, Shahram; Frei, Oleksandr; Lin, Aihua; Gani, Osman; Shadrin, Alexey A.; Smeland, Olav Bjerkehagen; O'Connell, Kevin; Elvsåshagen, Torbjørn; Winterton, Adriano; Quintana, Daniel; Hindley, Guy Frederick Lanyon; Werner, Maren Caroline Frogner; Djurovic, Srdjan; Dale, Anders Martin; Lagerberg, Trine Vik; Steen, Nils Eiel; Andreassen, Ole Andreas (Journal article; Peer reviewed, 2021)
      Clinical and epidemiological evidence suggest that loneliness is associated with severe mental disorders (SMDs) and increases the risk of cardiovascular disease (CVD). However, the mechanisms underlying the relationship ...
    • Polygenic overlap with body-mass index improves prediction of treatment-resistant schizophrenia 

      O'Connell, Kevin Sean; Koch, Elise; Lenk, Hasan Cagin; Akkouh, Ibrahim Ahmed; Hindley, Guy Frederick Lanyon; Jaholkowski, Piotr Pawel; Smith, Robert Løvsletten; Holen, Børge; Shadrin, Alexey; Frei, Oleksandr; Smeland, Olav Bjerkehagen; Steen, Nils Eiel; Dale, Anders M; Molden, Espen; Djurovic, Srdjan; Andreassen, Ole (Journal article; Peer reviewed, 2023)
      Treatment resistant schizophrenia (TRS) is characterized by repeated treatment failure with antipsychotics. A recent genome-wide association study (GWAS) of TRS showed a polygenic architecture, but no significant loci were ...
    • Shared genetic architecture between schizophrenia and subcortical brain volumes implicates early neurodevelopmental processes and brain development in childhood 

      Cheng, Weiqiu; van der Meer, Dennis; Parker, Nadine; Hindley, Guy Frederick Lanyon; O'Connell, Kevin Sean; Wang, Yunpeng; Shadrin, Alexey; Alnæs, Dag; Bahrami, Shahram; Lin, Aihua; Karadag, Naz; Holen, Børge; Fernández-Cabello, Sara; Fan, Chun-Chieh; Dale, Anders; Djurovic, Srdjan; Westlye, Lars Tjelta; Frei, Oleksandr; Smeland, Olav Bjerkehagen; Andreassen, Ole (Journal article; Peer reviewed, 2022)
      Patients with schizophrenia have consistently shown brain volumetric abnormalities, implicating both etiological and pathological processes. However, the genetic relationship between schizophrenia and brain volumetric ...
    • The shared genetic basis of mood instability and psychiatric disorders: A cross-trait genome-wide association analysis 

      Hindley, Guy Frederick Lanyon; O'Connell, Kevin Sean; Rahman, Zillur; Frei, Oleksandr; Bahrami, Shahram; Shadrin, Alexey; Høegh, Margrethe Collier; Cheng, Weiqiu; Karadag, Naz; Lin, Aihua; Rødevand, Linn; Fan, Chun C.; Djurovic, Srdjan; Lagerberg, Trine Vik; Dale, Anders; Smeland, Olav Bjerkehagen; Andreassen, Ole (Journal article; Peer reviewed, 2022)
      Recent genome-wide association studies of mood instability (MOOD) have found significant positive genetic correlation with major depression (DEP) and weak correlations with other psychiatric disorders. We investigated the ...
    • Shared genetic loci between depression and cardiometabolic traits 

      Torgersen, Kristin Stensland; Rahman, Zillur; Bahrami, Shahram; Hindley, Guy Frederick Lanyon; Parker, Nadine; Frei, Oleksandr; Shadrin, Alexey; O'Connell, Kevin Sean; Tesli, Martin Steen; Smeland, Olav Bjerkehagen; Munkhaugen, John; Djurovic, Srdjan; Dammen, Toril; Andreassen, Ole (Journal article; Peer reviewed, 2022-05-13)
      Epidemiological and clinical studies have found associations between depression and cardiovascular disease risk factors, and coronary artery disease patients with depression have worse prognosis. The genetic relationship ...