Browsing Department of Clinical Science by Author "Haavik, Jan"

Now showing items 1-6 of 6

    • 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, 2019-10-17)
      Attention-deficit/hyperactivity disorder (ADHD) is a highly heritable common childhood-onset neurodevelopmental disorder. Some rare copy number variations (CNVs) affect multiple neurodevelopmental disorders such as ...

    • The effect of electroconvulsive therapy (ECT) on serum kynurenine pathway metabolites in late-life depression 

      Aarsland, Tore Ivar Malmei; Haavik, Jan; Ulvik, Arve; Ueland, Per Magne; Dols, Annemiek; Kessler, Ute (Journal article; Peer reviewed, 2023)
      Background Depression is reportedly associated with alterations in kynurenine pathway metabolites (kynurenines). Several kynurenines are involved in glutamate signaling, and some have potentially neurotoxic effects while ...

    • Effects of copy number variations on brain structure and risk for psychiatric illness: Large-scale studies from the ENIGMA working groups on CNVs 

      Sønderby, Ida Elken; Ching, Christopher R. K.; Thomopoulos, Sophia I.; van der Meer, Dennis; Sun, Daqiang; Villalon-Reina, Julio E.; Agartz, Ingrid; Amunts, Katrin; Arango, Celso; Armstrong, Nicola J.; Ayesa-Arriola, Rosa; Bakker, Geor; Bassett, Anne S.; Boomsma, Dorret I.; Bulow, Robin; Butcher, Nancy J.; Calhoun, Vince D.; Caspers, Svenja; Chow, Eva W. C.; Cichon, Sven; Ciufolini, Simone; Craig, Michael C.; Crespo-Facorro, Benedicto; Cunningham, Adam C.; Dale, Anders M.; Dazzan, Paola; de Zubicaray, Greig I.; Djurovic, Srdjan; Doherty, Joanne L.; Donohoe, Gary; Draganski, Bogdan; Durdle, Courtney A.; Ehrlich, Stefan; Emanuel, Beverly S.; Espeseth, Thomas; Fisher, Simon E.; Ge, Tian; Glahn, David C.; Grabe, Hans J.; Gur, Raquel E.; Gutman, Boris A.; Lundervold, Astri J.; Haavik, Jan; Håberg, Asta; Hansen, Laura A.; Moberget, Torgeir; Sánchez, Jennifer Monereo; Reinbold, Céline Sonja; Tamnes, Christian Krog; Westlye, Lars Tjelta; Andreassen, Ole; et al., , (Journal article; Peer reviewed, 2022)
      The Enhancing NeuroImaging Genetics through Meta-Analysis copy number variant (ENIGMA-CNV) and 22q11.2 Deletion Syndrome Working Groups (22q-ENIGMA WGs) were created to gain insight into the involvement of genetic factors ...

    • Exome chip analyses in adult attention deficit hyperactivity disorder 

      Zayats, Tetyana; Jacobsen, Kaya Kvarme; Kleppe, Rune; Jacob, CP; Kittel-Schneider, Sarah; Ribases, Marta; Ramos-Quiroga, JA; Richarte, Vanesa; Casas, M; Mota, NR; Grevet, EH; Klein, M; Corominas, J; Bralten, Janita; Galesloot, T; Vasquez, AA; Herms, S; Forstner, AJ; Larsson, H; Breen, G; Asherson, P; Gross-Lesch, Silke; Lesch, KP; Cichon, Sven; Gabrielsen, Maiken Elvestad; Holmen, Oddgeir Lingaas; Bau, CH; Buitelaar, Jan; Kiemeney, L; Faraone, Stephen V.; Cormand, B; Franke, Barbara; Reif, Andreas; Haavik, Jan; Johansson, Stefan (Peer reviewed; Journal article, 2016)
      Attention-deficit/hyperactivity disorder (ADHD) is a highly heritable childhood-onset neuropsychiatric condition, often persisting into adulthood. The genetic architecture of ADHD, particularly in adults, is largely unknown. ...

    • Identification of Genetic Loci Shared Between Attention-Deficit/Hyperactivity Disorder, Intelligence, and Educational Attainment 

      O`Connell, Kevin; Shadrin, Alexey A.; Smeland, Olav Bjerkehagen; Bahrami, Shahram; Frei, Oleksandr; Bettella, Francesco; Krull, Florian; Fan, Chun C.; Askeland, Ragna Bugge; Knudsen, Gun Peggy Strømstad; Halmøy, Anne; Steen, Nils Eiel; Ueland, Torill; Walters, Bragi; Davíðsdóttir, Katrín; Haraldsdóttir, Gyda S.; Guðmundsson, Ólafur; Stefansson, Hreinn; Reichborn-Kjennerud, Ted; Haavik, Jan; Dale, Anders M.; Stefánsson, Kári; Djurovic, Srdjan; Andreassen, Ole Andreas (Peer reviewed; Journal article, 2020)
      Background: Attention-deficit/hyperactivity disorder (ADHD) is a neurodevelopmental disorder that is consistently associated with lower levels of educational attainment. A recent large genome-wide association study identified ...

    • Population prevalence and inheritance pattern of recurrent CNVs associated with neurodevelopmental disorders in 12,252 newborns and their parents 

      Smajlagic, Dinka; Lavrichenko, Ksenia; Berland, Siren; Helgeland, Øyvind; Knudsen, Gun Peggy Strømstad; Vaudel, Marc; Haavik, Jan; Knappskog, Per; Njølstad, Pål Rasmus; Houge, Gunnar; Johansson, Stefan (Journal article; Peer reviewed, 2020)
      Recurrent copy number variations (CNVs) are common causes of neurodevelopmental disorders (NDDs) and associated with a range of psychiatric traits. These CNVs occur at defined genomic regions that are particularly prone ...