Blar i Bergen Open Research Archive på forfatter "Johansson, Stefan"
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1q21.1 distal copy number variants are associated with cerebral and cognitive alterations in humans
Sønderby, Ida Elken; van der Meer, Dennis; Moreau, Clara; Kaufmann, Tobias; Walters, G. Bragi; Ellegaard, Maria; Abdellaoui, Abdel; Ames, David; Amunts, Katrin; Andersson, Micael; Armstrong, Nicola J.; Bernard, Manon; Blackburn, Nicholas B.; Blangero, John; Boomsma, Dorret I.; Brodaty, Henry; Brouwer, Rachel M.; Bülow, Robin; Bøen, Rune; Cahn, Wiepke; Calhoun, Vince D.; Caspers, Svenja; Ching, Christopher R. K.; Cichon, Sven; Ciufolini, Simone; Crespo-Facorro, Benedicto; Curran, Joanne E.; Dale, Anders M.; Dalvie, Shareefa; Dazzan, Paola; de Geus, Eco J. C.; Zubicaray, Greig I. de; Zwarte, Sonja M. C. de; Desrivieres, Sylvane; Doherty, Joanne L.; Donohoe, Gary; Draganski, Bogdan; Ehrlich, Stefan; Eising, Else; Espeseth, Thomas; Fejgin, Kim; Fisher, Simon E.; Fladby, Tormod; Frei, Oleksandr; Frouin, Vincent; Fukunaga, Masaki; Gareau, Thomas; Ge, Tian; Glahn, David C.; Grabe, Hans J.; Groenewold, Nynke A.; Gustafsson, Omar; Haavik, Jan; Haberg, Asta Kristine; Hall, Jeremy; Hashimoto, Ryota; Hehir-Kwa, Jayne Y.; Hibar, Derrek P.; Hillegers, Manon H. J.; Hoffmann, Per; Holleran, Laurena; Holmes, Avram J.; Johansson, Stefan; Jönsson, Erik Gunnar; Hellard, Stephanie Francoise Claire Le; Lundervold, Arvid; Lundervold, Astri J.; Moberget, Torgeir; Nordvik, Jan Egil; Sando, Sigrid Botne; Steen, Vidar Martin; Tamnes, Christian Krog; Agartz, Ingrid; Djurovic, Srdjan; Westlye, Lars Tjelta; Andreassen, Ole; Homuth, Georg; Hottenga, Jouke-Jan; Hulshoff Pol, Hilleke E.; Ikeda, Masashi; Jahanshad, Neda; Jockwitz, Christiane; Jørgensen, Niklas R.; Kikuchi, Masataka; Knowles, Emma E. M.; Kumar, Kuldeep; Leu, Costin; Linden, David E. J.; Liu, Jingyu; Maillard, Anne M.; Martin, Nicholas G.; Martin-Brevet, Sandra; Mather, Karen A.; Mathias, Samuel R.; McMahon, Katie L.; McRae, Allan F.; Medland, Sarah E.; Meyer-Lindenberg, Andreas; Modenato, Claudia; Monereo Sánchez, Jennifer; Morris, Derek W.; Mühleisen, Thomas W.; Murray, Robin M.; Nielsen, Jacob; Nyberg, Lars; Olde Loohuis, Loes M.; Ophoff, Roel A.; Owen, Michael J.; Paus, Tomas; Pausova, Zdenka; Peralta, Juan M.; Pike, G. Bruce; Prieto, Carlos; Quinlan, Erin B.; Reinbold, Céline S.; Reis Marques, Tiago; Rucker, James J. H.; Sachdev, Perminder S.; Schofield, Peter R.; Schork, Andrew J.; Schumann, Gunter; Shin, Jean; Shumskaya, Elena; Silva, Ana I.; Sisodiya, Sanjay M.; Stein, Dan J.; Strike, Lachlan T.; Suzuki, Ikuo K.; Teumer, Alexander; Thalamuthu, Anbupalam; Tordesillas-Gutiérrez, Diana; Uhlmann, Anne; Ulfarsson, Magnus O.; van ‘t Ent, Dennis; van den Bree, Marianne B. M.; Vanderhaeghen, Pierre; Vassos, Evangelos; Wen, Wei; Wittfeld, Katharina; Wright, Margaret J.; Stefansson, Hreinn; Stefansson, Kari; Jacquemont, Sébastien; Thompson, Paul M. (Journal article; Peer reviewed, 2021)Low-frequency 1q21.1 distal deletion and duplication copy number variant (CNV) carriers are predisposed to multiple neurodevelopmental disorders, including schizophrenia, autism and intellectual disability. Human carriers ... -
ADCK3 mutations with epilepsy, stroke-like episodes and ataxia: a POLG mimic?
Hikmat, Omar; Tzoulis, Charalampos; Knappskog, Per; Johansson, Stefan; Boman, Helge; Sztromwasser, Pawel Szymon; Lien, Espen; Brodtkorb, Eylert; Ghezzi, Daniele; Bindoff, Laurence (Peer reviewed; Journal article, 2016-07)Background and purpose: Defects of coenzyme Q10 (CoQ10) metabolism cause a variety of disorders ranging from isolated myopathy to multisystem involvement. ADCK3 is one of several genes associated with CoQ10 deficiency that ... -
Assessing the Causal Relationship of Maternal Height on Birth Size and Gestational Age at Birth: A Mendelian Randomization Analysis
Zhang, Ge; Bacelis, Jonas; Lengyel, Candice; Teramo, Kari; Hallman, Mikko; Helgeland, Øyvind; Johansson, Stefan; Myhre, Ronny; Sengpiel, Verena; Njølstad, Pål Rasmus; Jacobsson, Bo; Muglia, Louis (Peer reviewed; Journal article, 2015-08-18)Background: Observational epidemiological studies indicate that maternal height is associated with gestational age at birth and fetal growth measures (i.e., shorter mothers deliver infants at earlier gestational ages with ... -
Association of sweetened carbonated beverage consumption during pregnancy and ADHD symptoms in the ofspring: a study from the Norwegian Mother, Father and Child Cohort Study (MoBa)
Kvalvik, Liv Grimstvedt; Klungsøyr, Kari; Igland, Jannicke; Caspersen, Ida Henriette; Brantsæter, Anne Lise; Solberg, Berit Skretting; Hartman, Catharina; Schweren, Lizanne Johanna Stephanie; Larsson, Henrik; Li, Lin; Forthun, Ingeborg; Johansson, Stefan; Vasquez, Alejandro Arias; Haavik, Jan (Journal article; Peer reviewed, 2022)Purpose Intrauterine exposures influence offspring health and development. Here we investigated maternal intake of sweetened carbonated beverages (SCB) during pregnancy and its association with ADHD symptoms in the ... -
Associations between ABO blood groups and pancreatic ductal adenocarcinoma: influence on resection status and survival
el Jellas, Khadija; Hoem, Dag; Hagen, Kristin Gjerde; Kalvenes, May Britt; Aziz, Sura Mohammed; Steine, Solrun; Immervoll, Heike; Johansson, Stefan; Molven, Anders (Peer reviewed; Journal article, 2017-07)Both serology‐based and genetic studies have reported an association between pancreatic cancer risk and ABO blood groups. We have investigated this relationship in a cohort of pancreatic cancer patients from Western Norway ... -
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 ... -
Autozygosity mapping and time-to-spontaneous delivery in Norwegian parent-offspring trios
Solé-Navais, Pol; Bacelis, Jonas; Helgeland, Øyvind; Modzelewska, Dominika; Vaudel, Marc; Flatley, Christopher; Andreassen, Ole; Njølstad, Pål Rasmus; Muglia, Louis J.; Johansson, Stefan; Zhang, Ge; Jacobsson, Bo (Journal article; Peer reviewed, 2020)Parental genetic relatedness may lead to adverse health and fitness outcomes in the offspring. However, the degree to which it affects human delivery timing is unknown. We use genotype data from ≃25 000 parent-offspring ... -
B vitamin treatments modify the risk of myocardial infarction associated with a MTHFD1 polymorphism in patients with stable angina pectoris
Ding, Yunpeng; Pedersen, Eva Ringdal; Johansson, Stefan; Gregory III, Jesse F.; Ueland, Per Magne; Svingen, Gard Frodahl Tveitevåg; Helgeland, Øyvind; Meyer, Klaus; Fredriksen, Åse; Nygård, Ottar (Peer reviewed; Journal article, 2016-06)Background: Methylenetetrahydrofolate dehydrogenase (MTHFD1) catalyzes three sequential reactions that metabolize derivatives of tetrahydrofolate (THF) in folate-dependent one-carbon metabolism. Impaired MTHFD1 flux has ... -
Body mass index and childhood symptoms of depression, anxiety, and attention-deficit hyperactivity disorder: A within-family Mendelian randomization study
Hughes, Amanda M.; Sanderson, Eleanor; Morris, Tim; Ayorech, Ziada; Tesli, Martin Steen; Ask, Helga; Reichborn-Kjennerud, Ted; Andreassen, Ole; Magnus, Per Minor; Helgeland, Øyvind; Johansson, Stefan; Njølstad, Pål Rasmus; Davey Smith, George; Havdahl, Alexandra Karoline Saasen; Howe, Laura D.; Davies, Neil Martin (Journal article; Peer reviewed, 2022)Background: Higher BMI in childhood is associated with emotional and behavioural problems, but these associations may not be causal. Results of previous genetic studies imply causal effects but may reflect influence of ... -
Characterisation of HNF1A variants in paediatric diabetes in Norway using functional and clinical investigations to unmask phenotype and monogenic diabetes
Svalastoga, Pernille; Kaci, Alba; Molnes, Janne; Solheim, Marie Holm; Johansson, Bente Berg; Krogvold, Lars; Skrivarhaug, Torild; Valen, Eivind; Johansson, Stefan; Molven, Anders; Sagen, Jørn Vegard; Søfteland, Eirik; Bjørkhaug, Lise; Tjora, Erling; Aukrust, Ingvild; Njølstad, Pål Rasmus (Journal article; Peer reviewed, 2023)Aims/hypothesis Correctly diagnosing MODY is important, as individuals with this diagnosis can discontinue insulin injections; however, many people are misdiagnosed. We aimed to develop a robust approach for determining ... -
Characterization of the genetic architecture of infant and early childhood body mass index
Helgeland, Øyvind; Vaudel, Marc; Sole-Navais, Pol; Flatley, Christopher; Juodakis, Julius; Bacelis, Jonas; Koløen, Ingvild; Knudsen, Gun Peggy Strømstad; Johansson, Bente Berg; Magnus, Per Minor; Reichborn-Kjennerud, Ted; Juliusson, Pétur Benedikt; Stoltenberg, Camilla; Holmen, Oddgeir Lingaas; Andreassen, Ole; Jacobsson, Bo; Njølstad, Pål Rasmus; Johansson, Stefan (Journal article; Peer reviewed, 2022)Early childhood obesity is a growing global concern; however, the role of common genetic variation on infant and child weight development is unclear. Here, we identify 46 loci associated with early childhood body mass index ... -
Chip protein U-box domain truncation affects Purkinje neuron morphology and leads to behavioral changes in zebrafish
Pakdaman, Yasaman; Denker, Elsa; Austad, Eirik; Norton, William H.J.; Rolfsnes, Hans Olav; Bindoff, Laurence Albert; Tzoulis, Charalampos; Aukrust, Ingvild; Knappskog, Per Morten; Johansson, Stefan; Ellingsen, Ståle (Journal article; Peer reviewed, 2021-09-24)The ubiquitin ligase CHIP (C-terminus of Hsc70-interacting protein) is encoded by STUB1 and promotes ubiquitination of misfolded and damaged proteins. CHIP deficiency has been linked to several diseases, and mutations in ... -
The Chromosome 9p21 CVD- and T2D-Associated Regions in a Norwegian Population (The HUNT2 Survey)
Helgeland, Øyvind; Hertel, Jens Kristoffer; Molven, Anders; Ræder, Helge; Platou, Carl Geoffrey Parrinder; Midthjell, Kristian; Hveem, Kristian; Nygård, Ottar; Njølstad, Pål R.; Johansson, Stefan (Peer reviewed; Journal article, 2015)Background. Two adjacent regions upstream CDKN2B on chromosome 9p21 have been associated with type 2 diabetes (T2D) and progression of cardiovascular disease (CVD).The precise location and number of risk variants have not ... -
Common variants in the ARC gene are not associated with cognitive abilities
Myrum, Craig; Giddaluru, Sudheer; Jacobsen, Kaya Kvarme; Espeseth, Thomas; Nyberg, Lars; Lundervold, Astri; Haavik, Jan; Nilsson, Lars-Göran; Reinvang, Ivar; Steen, Vidar Martin; Johansson, Stefan; Wibrand, Karin; Le Hellard, Stephanie; Bramham, Clive R. (Peer reviewed; Journal article, 2015-09-03)Introduction: The Activity-Regulated Cytoskeleton-associated (ARC) gene encodes a protein that is critical for the consolidation of synaptic plasticity and long-term memory formation. Given ARC's key role in synaptic ... -
Comprehensive characterization of copy number variation (CNV) called from array, long- and short-read data
Lavrichenko, Ksenia; Johansson, Stefan; Jonassen, Inge (Journal article; Peer reviewed, 2021)Background SNP arrays, short- and long-read genome sequencing are genome-wide high-throughput technologies that may be used to assay copy number variants (CNVs) in a personal genome. Each of these technologies comes with ... -
DCLK1 Variants Are Associated across Schizophrenia and Attention Deficit/Hyperactivity Disorder
Håvik, Bjarte; Fernandes, Carla P. D.; Christoforou, Andrea; Ersland, Kari Merete; Giddaluru, Sudheer; Cichon, Sven; Steen, Vidar Martin; Hellard, Stéphanie Le; Johansson, Stefan; Bramham, Clive R.; Haavik, Jan (Peer reviewed; Journal article, 2012-04-23)Doublecortin and calmodulin like kinase 1 (DCLK1) is implicated in synaptic plasticity and neurodevelopment. Genetic variants in DCLK1 are associated with cognitive traits, specifically verbal memory and general cognition. ... -
Double paternal uniparental isodisomy 7 and 15 presenting with Beckwith–Wiedemann spectrum features
Berland, Siren; Rustad, Cecilie; Bentsen, Mariann; Wollen, Embjørg Julianne; Turowski, Gitta Erika; Johansson, Stefan; Houge, Gunnar Douzgos; Haukanes, Bjørn Ivar (Journal article; Peer reviewed, 2021)Here we describe for the first time double paternal uniparental isodisomy (iUPD) 7 and 15 in a baby boy with features in the Beckwith–Wiedemann syndrome spectrum (BWSp) (placentomegaly, hyperinsulinism, enlarged viscera, ... -
Epistatic and gene wide effects in YWHA and aromatic amino hydroxylase genes across ADHD and other common neuropsychiatric disorders: Association with YWHAE
Jacobsen, Kaya Kvarme; Kleppe, Rune; Johansson, Stefan; Zayats, Tetyana; Haavik, Jan (Peer reviewed; Journal article, 2015-09)Monoamines critically modulate neurophysiological functions affected in several neuropsychiatric disorders. We therefore examined genes encoding key enzymes of catecholamine and serotonin biosynthesis (tyrosine and tryptophan ... -
European and multi-ancestry genome-wide association meta-analysis of atopic dermatitis highlights importance of systemic immune regulation
Budu-Aggrey, Ashley; Kilanowski, Anna; Sobczyk, Maria K.; Shringarpure, Suyash S.; Mitchell, Ruth; Reis, Kadri; Reigo, Anu; Mägi, Reedik; Nelis, Mari; Tanaka, Nao; Brumpton, Ben Michael; Thomas, Laurent Francois; Sole-Navais, Pol; Flatley, Christopher; Espuela-Ortiz, Antonio; Herrera-Luis, Esther; Lominchar, Jesus V. T.; Bork-Jensen, Jette; Marenholz, Ingo; Arnau-Soler, Aleix; Jeong, Ayoung; Fawcett, Katherine A.; Baurecht, Hansjorg; Rodriguez, Elke; Alves, Alexessander Couto; Kumar, Ashish; Sleiman, Patrick M.; Chang, Xiao; Medina-Gomez, Carolina; Hu, Chen; Xu, Cheng-jian; Qi, Cancan; El-Heis, Sarah; Titcombe, Philip; Antoun, Elie; Fadista, João; Wang, Carol A.; Thiering, Elisabeth; Wu, Baojun; Kress, Sara; Kothalawala, Dilini M.; Kadalayil, Latha; Duan, Jiasong; Zhang, Hongmei; Hadebe, Sabelo; Hoffmann, Thomas; Jorgenson, Eric; Choquet, Hélène; Risch, Neil; Njølstad, Pål Rasmus; Andreassen, Ole; Johansson, Stefan; Almqvist, Catarina; Gong, Tong; Ullemar, Vilhelmina; Karlsson, Robert; Magnusson, Patrik K. E.; Szwajda, Agnieszka; Burchard, Esteban G.; Thyssen, Jacob P.; Hansen, Torben; Kårhus, Line L.; Dantoft, Thomas M.; Jeanrenaud, Alexander C.S.N.; Ghauri, Ahla; Arnold, Andreas; Homuth, Georg; Lau, Susanne; Nöthen, Markus M.; Hübner, Norbert; Imboden, Medea; Visconti, Alessia; Falchi, Mario; Bataille, Veronique; Hysi, Pirro; Ballardini, Natalia; Boomsma, Dorret I.; Hottenga, Jouke J.; Müller-Nurasyid, Martina; Ahluwalia, Tarunveer S.; Stokholm, Jakob; Chawes, Bo; Schoos, Ann-Marie M.; Esplugues, Ana; Bustamante, Mariona; Raby, Benjamin; Arshad, Syed; German, Chris; Esko, Tõnu; Milani, Lili A.; Metspalu, Andres; Terao, Chikashi; Abuabara, Katrina; Løset, Mari; Hveem, Kristian; Jacobsson, Bo; Pino-Yanes, Maria; Strachan, David P.; Grarup, Niels; Linneberg, Allan; Lee, Young-Ae; Probst-Hensch, Nicole; Weidinger, Stephan; Jarvelin, Marjo-Riitta; Melén, Erik; Hakonarson, Hakon; Irvine, Alan D.; Jarvis, Deborah; Nijsten, Tamar; Duijts, Liesbeth; Vonk, Judith M.; Koppelmann, Gerard H.; Godfrey, Keith M.; Barton, Sheila J.; Feenstra, Bjarke; Pennell, Craig E.; Sly, Peter D.; Holt, Patrick G.; Williams, L. Keoki; Bisgaard, Hans; Bønnelykke, Klaus; Curtin, John; Simpson, Angela; Murray, Clare; Schikowski, Tamara; Bunyavanich, Supinda; Weiss, Scott T.; Holloway, John W.; Min, Josine L.; Brown, Sara J.; Standl, Marie; Paternoster, Lavinia (Journal article; Peer reviewed, 2023)Atopic dermatitis (AD) is a common inflammatory skin condition and prior genome-wide association studies (GWAS) have identified 71 associated loci. In the current study we conducted the largest AD GWAS to date (discovery ... -
Evaluation of four novel genetic variants affecting hemoglobin A1c levels in a population-based type 2 diabetes cohort (the HUNT2 study)
Hertel, Jens Kristoffer; Johansson, Stefan; Ræder, Helge; Platou, Carl G. P.; Midthjell, Kristian; Hveem, Kristian; Molven, Anders; Njølstad, Pål Rasmus (Peer reviewed; Journal article, 2011-02-04)<b>Background:</b> Chronic hyperglycemia confers increased risk for long-term diabetes-associated complications and repeated hemoglobin A1c (HbA1c) measures are a widely used marker for glycemic control in diabetes treatment ...