• A genome-wide association study of anorexia nervosa 

      Reichborn-Kjennerud, Ted; Knudsen, Gun Peggy; Andreassen, Ole Andreas; Espeseth, Thomas; Lundervold, Astri; Reinvang, Ivar; Steen, Vidar Martin; Le Hellard, Stephanie; Mattingsdal, Morten; Boraske, V; Franklin, CS; Floyd, James A. B.; Thornton, Laura M; Huckins, L. M.; Southam, L; Rayner, NW; Tachmazidou, I; Klump, KL; Treasure, Jim; Lewis, C. M.; Schmidt, U; Tozzi, F; Kiezebrink, K; Hebebrand, J.; Gorwood, P.; Adan, R. A. H.; Kas, M. J. H.; Favaro, A; Santonastaso, P; Fernández-Aranda, Fernando; Gratacòs, Mònica; Rybakowski, Finn; Dmitrzak-Weglarz, M.; Kaprio, J; Keski-Rahkonen, A; Raevuori, A.; Van Furth, E. F.; Slof-Op 't Landt, M. C. T.; Hudson, JI; Monteleone, P.; Kaplan, AS; Karwautz, A; Hakonarson, H; Berrettini, W. H.; Guo, Y; Li, D; Schork, NJ; Komaki, G; Ando, T; Inoko, H. (Journal article, 2014)
    • 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 

      Aas, Monica; Andreassen, Ole Andreas; Aminoff, Sofie Ragnhild; Færden, Ann; Romm, Kristin Lie; Nesvåg, Ragnar; Berg, Akiah Ottesen; Simonsen, Carmen Elisabeth; Agartz, Ingrid; Melle, Ingrid (Journal article, 2016)
    • Attention-deficit hyperactivity disorder shares copy number variant risk with schizophrenia and autism spectrum disorder 

      Gudmundsson, Ólafur Ó.; Walters, Gudmundur Bragi; Ingason, Andrés; Johansson, Stefan; Zayats, Tetyana; Athanasiu, Lavinia; Sønderby, Ida Elken; Gustafsson, Omar; Nawaz, Muhammad Sulaman; Jónsson, Gudbjörn F.; Jónsson, Lina; Knappskog, Per; Ingvarsdóttir, Ester; Davidsdóttir, Katrin; Djurovic, Srdjan; Knudsen, Gun Peggy Strømstad; Askeland, Ragna Bugge; Haraldsdóttir, Gyda S.; Baldursson, Gísli; Magnússon, Páll; Sigurdsson, Engilbert; Gudbjartsson, Daníel Fannar; Stéfansson, Hreinn; Andreassen, Ole Andreas; Haavik, Jan; Reichborn-Kjennerud, Ted; Stefánsson, Kári (Peer reviewed; Journal article, 2019)
    • Brain structure abnormalities in first-episode psychosis patients with persistent apathy 

      Mørch-Johnsen, Lynn; Nesvåg, Ragnar; Færden, Ann; Haukvik, Unn Kristin H.; Jørgensen, Kjetil Nordbø; Lange, Elisabeth; Andreassen, Ole Andreas; Melle, Ingrid; Agartz, Ingrid (Journal article, 2015)
    • Fourteen sequence variants that associate with multiple sclerosis discovered by meta-analysis informed by genetic correlations. 

      Olafsson, S.; Stridh, P.; Bos, Steffan Daniel; Ingason, Andrés; Euesden, J; Sulem, Patrick; Thorleifsson, Gudmar; Gustafsson, O; Geirsson, AJ; Jóhannesson, Ari J.; Thorsson, AV; Ludviksson, BR; Sigurgeirsson, Bardur; Jonasson, JG; Olafsson, E; Kristjansdottir, H; Olafsson, JH; Orvar, KB; Benediktsson, Rafn; Bjarnason, Ragnar; Kristjansdottir, Sjofn; Gislason, Thorarin; Valdimarsson, T; Mikaelsdottir, E; Sigurdsson, S; Jonsson, S; Rafnar, Thorunn; Aarsland, Dag; Djurovic, Srdjan; Fladby, Tormod; Knudsen, Gun Peggy S.; Celius, Elisabeth Gulowsen; Myhr, Kjell-Morten; Gröndal, Gerdur; Steinsson, K; Valdimarsson, Helgi; Bjornsson, Sigurdur; Bjornsdottir, US; Bjornsson, Einar S.; Nilsson, B; Andreassen, Ole Andreas; Alfredsson, Lars; Hillert, Jan; Kockum, Ingrid; Másson, Gísli; Thorsteinssdottir, U; Gudbjartsson, Daniel F.; Stefansson, H; Hjaltason, H; Harbo, Hanne Flinstad; Olsson, T; Jonsdottir, I; Stefansson, K (Journal article, 2017)
      A meta-analysis of publicly available summary statistics on multiple sclerosis combined with three Nordic multiple sclerosis cohorts (21,079 cases, 371,198 controls) revealed seven sequence variants associating with multiple ...
    • Genome-wide analysis of attention deficit hyperactivity disorder in Norway 

      Zayats, Tetyana; Athanasiu, Lavinia; Sønderby, Ida Elken; Djurovic, Srdjan; Westlye, Lars Tjelta; Tamnes, Christian Krog; Fladby, Tormod; Aase, Heidi; Zeiner, Pål; Reichborn-Kjennerud, Ted; Knappskog, Per; Knudsen, Gun Peggy; Andreassen, Ole Andreas; Johansson, Stefan; Haavik, Jan (Journal article, 2015)
    • Global brain connectivity alterations in persons with schizophrenia and bipolar spectrum disorders 

      Skåtun, Kristina Cecilie; Kaufmann, Tobias; Tønnesen, Siren; Biele, Guido; Melle, Ingrid; Agartz, Ingrid; Alnæs, Dag; Andreassen, Ole Andreas; Westlye, Lars Tjelta (Journal article, 2016)
    • Loss-of-function variants in ABCA7 confer risk of Alzheimer’s disease 

      Steinberg, Stacy; Stefansson, Hreinn; Jonsson, Thorlakur; Johannsdottir, Hrefna; Ingason, Andrés; Helgason, Hannes; Sulem, Patrick; Magnusson, Olafur Th; Gudjunsson, Sigurjon A; Unnsteinsdottir, Unnur; Kong, Augustine; Helisalmi, Seppo; Soininen, Hilkka; Lah, James J; Aarsland, Dag; Fladby, Tormod; Ulstein, Ingun; Djurovic, Srdjan; Sando, Sigrid Botne; White, Linda; Knudsen, Gun Peggy; Westlye, Lars Tjelta; Selbæk, Geir; Giegling, Ina; Hampel, Harald; Hiltunen, Mikko; Levey, AIlan I.; Andreassen, Ole Andreas; Rujescu, Dan; Jonsson, Palmi V.; Bjornsson, Sigurbjorn; Snaedal, Jon; Stefánsson, Kári (Journal article, 2015)
      We conducted a search for rare, functional variants altering susceptibility to Alzheimer’s disease that exploited knowledge of common variants associated with the same disease. We found that loss-of-function variants in ...
    • Reduced brain cortical folding in schizophrenia revealed in two independent samples 

      Nesvåg, Ragnar; Schaer, M; Haukvik, Unn Kristin H.; Westlye, Lars Tjelta; Rimol, Lars Morten; Lange, Elisabeth; Hartberg, Cecilie Bhandari; Ottet, MC; Melle, Ingrid; Andreassen, Ole Andreas; Jonsson, EG; Agartz, Ingrid; Eliez, S (Journal article, 2014)
    • The quality of severe mental disorder diagnoses in a national health registry as compared to research diagnoses based on structured interview 

      Nesvåg, Ragnar; Jönsson, Erik Gunnar; Bakken, Inger Johanne; Knudsen, Gun Peggy; Reichborn-Kjennerud, Ted; Bjella, Thomas; Melle, Ingrid; Andreassen, Ole Andreas (Peer reviewed; Journal article, 2017)
    • Vitamin D status in psychotic disorder patients and healthy controls - The influence of ethnic background 

      Nerhus, Mari; Berg, Akiah Ottesen; Dahl, Sandra Rinne; Holvik, Kristin; Gardsjord, Erlend Strand; Weibell, Melissa Authen; Bjella, Thomas; Andreassen, Ole Andreas; Melle, Ingrid (Journal article, 2015)
      Vitamin D deficiency is common among patients with psychotic disorders and could be due to unknown disease mechanisms or contingent factors. However most studies are performed in chronic patients and have often failed to ...
    • Vitamin D status in psychotic disorder patients and healthy controls - The influence of ethnic background 

      Nerhus, Mari; Berg, Akiah Ottesen; Dahl, Sandra Rinne; Holvik, Kristin; Gardsjord, Erlend Strand; Weibell, Melissa Anne E.a; Bjella, Thomas; Andreassen, Ole Andreas; Melle, Ingrid (Journal article, 2015)
      Vitamin D deficiency is common among patients with psychotic disorders and could be due to unknown disease mechanisms or contingent factors. However most studies are performed in chronic patients and have often failed to ...