T
Thordur Sigmundsson
Researcher at University of Iceland
Publications - 56
Citations - 10942
Thordur Sigmundsson is an academic researcher from University of Iceland. The author has contributed to research in topics: Psychosis & Schizophrenia (object-oriented programming). The author has an hindex of 29, co-authored 56 publications receiving 10561 citations. Previous affiliations of Thordur Sigmundsson include King's College London & University College London.
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Journal ArticleDOI
Large recurrent microdeletions associated with schizophrenia
Hreinn Stefansson,Dan Rujescu,Sven Cichon,Olli Pietiläinen,Andres Ingason,Stacy Steinberg,Ragnheidur Fossdal,Engilbert Sigurdsson,Thordur Sigmundsson,Jacobine E. Buizer-Voskamp,Thomas Hansen,Thomas Hansen,Klaus D. Jakobsen,Klaus D. Jakobsen,Pierandrea Muglia,Clyde Francks,Paul M. Matthews,Arnaldur Gylfason,Bjarni V. Halldorsson,Daniel F. Gudbjartsson,Thorgeir E. Thorgeirsson,Asgeir Sigurdsson,Adalbjorg Jonasdottir,Aslaug Jonasdottir,Asgeir Björnsson,Sigurborg Mattiasdottir,Thorarinn Blondal,Magnús Haraldsson,Brynja B. Magnusdottir,Ina Giegling,Hans-Jürgen Möller,Annette M. Hartmann,Kevin V. Shianna,Dongliang Ge,Anna C. Need,Caroline Crombie,Gillian Fraser,Nicholas Walker,Jouko Lönnqvist,Jaana Suvisaari,Annamarie Tuulio-Henriksson,Tiina Paunio,T. Toulopoulou,Elvira Bramon,Marta Di Forti,Robin M. Murray,Mirella Ruggeri,Evangelos Vassos,Sarah Tosato,Muriel Walshe,Tao Li,Tao Li,Catalina Vasilescu,Thomas W. Mühleisen,August G. Wang,Henrik Ullum,Srdjan Djurovic,Ingrid Melle,Jes Olesen,Lambertus A. Kiemeney,Barbara Franke,Chiara Sabatti,Nelson B. Freimer,Jeffrey R. Gulcher,Unnur Thorsteinsdottir,Augustine Kong,Ole A. Andreassen,Roel A. Ophoff,Roel A. Ophoff,Alexander Georgi,Marcella Rietschel,Thomas Werge,Hannes Petursson,David Goldstein,Markus M. Nöthen,Leena Peltonen,Leena Peltonen,David A. Collier,David A. Collier,David St Clair,Kari Stefansson,Kari Stefansson +81 more
TL;DR: In a genome-wide search for CNVs associating with schizophrenia, a population-based sample was used to identify de novo CNVs by analysing 9,878 transmissions from parents to offspring and three deletions significantly associate with schizophrenia and related psychoses in the combined sample.
Journal ArticleDOI
Neuregulin 1 and Susceptibility to Schizophrenia
Hreinn Stefansson,Engilbert Sigurdsson,Valgerdur Steinthorsdottir,Soley Bjornsdottir,Thordur Sigmundsson,Shyamali Ghosh,J Brynjolfsson,Steinunn Gunnarsdottir,Omar Ivarsson,Thomas T. Chou,Omar Hjaltason,Birgitta Birgisdottir,Helgi Jonsson,Vala G. Gudnadottir,Elsa Gudmundsdottir,Asgeir Björnsson,Brynjolfur Ingvarsson,Andres Ingason,Sigmundur Sigfusson,Hronn Hardardottir,Richard P. Harvey,Richard P. Harvey,Donna Lai,Mingdong Zhou,Daniela Brunner,Vincent Mutel,Acuna Gonzalo,Greg Lemke,Jesus Sainz,Gardar Johannesson,Thorkell Andresson,Daniel F. Gudbjartsson,Andrei Manolescu,Michael L. Frigge,Mark E. Gurney,Augustine Kong,Jeffrey R. Gulcher,Hannes Petursson,Kari Stefansson +38 more
TL;DR: The results of a genomewide scan of schizophrenia families in Iceland show that schizophrenia maps to chromosome 8p, and extensive fine-mapping of the 8p locus and haplotype-association analysis identifies neuregulin 1 (NRG1) as a candidate gene for schizophrenia.
Journal ArticleDOI
Common variants conferring risk of schizophrenia
Hreinn Stefansson,Hreinn Stefansson,Roel A. Ophoff,Roel A. Ophoff,Roel A. Ophoff,Stacy Steinberg,Stacy Steinberg,Ole A. Andreassen,Sven Cichon,Dan Rujescu,Thomas Werge,Olli Pietilainen,Ole Mors,Preben Bo Mortensen,Engilbert Sigurdsson,Omar Gustafsson,Mette Nyegaard,Annamari Tuulio-Henriksson,Andres Ingason,Thomas Hansen,Jaana Suvisaari,Jouko Lönnqvist,Tiina Paunio,Anders D. Børglum,Anders D. Børglum,Annette M. Hartmann,Anders Fink-Jensen,Merete Nordentoft,David M. Hougaard,Bent Nørgaard-Pedersen,Yvonne Böttcher,Jes Olesen,René Breuer,Hans-Jürgen Möller,Ina Giegling,Henrik B. Rasmussen,Sally Timm,Manuel Mattheisen,István Bitter,János Réthelyi,Brynja B. Magnusdottir,Thordur Sigmundsson,Pall I. Olason,Gisli Masson,Jeffrey R. Gulcher,Magnús Haraldsson,Ragnheidur Fossdal,Thorgeir E. Thorgeirsson,Unnur Thorsteinsdottir,Unnur Thorsteinsdottir,Mirella Ruggeri,Sarah Tosato,Barbara Franke,Eric Strengman,Lambertus A. Kiemeney,Ingrid Melle,Srdjan Djurovic,Lilia I. Abramova,Kaleda Vg,Julio Sanjuán,Rosa de Frutos,Elvira Bramon,Evangelos Vassos,Gillian Fraser,Ulrich Ettinger,Marco Picchioni,Nicholas Walker,T. Toulopoulou,Anna C. Need,Dongliang Ge,Joeng Lim Yoon,Kevin V. Shianna,Nelson B. Freimer,Rita M. Cantor,Robin M. Murray,Augustine Kong,Vera Golimbet,Angel Carracedo,Celso Arango,Javier Costas,Erik G. Jönsson,Lars Terenius,Ingrid Agartz,Hannes Petursson,Markus M. Nöthen,Marcella Rietschel,Paul M. Matthews,Pierandrea Muglia,Leena Peltonen,David St Clair,David Goldstein,Kari Stefansson,Kari Stefansson,David A. Collier,David A. Collier +94 more
TL;DR: Findings implicating the MHC region are consistent with an immune component to schizophrenia risk, whereas the association with NRGN and TCF4 points to perturbation of pathways involved in brain development, memory and cognition.
Journal ArticleDOI
Genome Scan Meta-Analysis of Schizophrenia and Bipolar Disorder, Part II: Schizophrenia
Cathryn M. Lewis,Douglas F. Levinson,Lesley H. Wise,Lynn E. DeLisi,Richard E. Straub,Iiris Hovatta,Nigel Williams,Sibylle G. Schwab,Ann E. Pulver,Stephen V. Faraone,Linda M. Brzustowicz,Linda M. Brzustowicz,Charles A. Kaufmann,David L. Garver,Hugh Gurling,Eva Lindholm,Hilary Coon,Hans W. Moises,William Byerley,Sarah H. Shaw,Andrea Mesén,Robin Sherrington,F. Anthony O'Neill,Dermot Walsh,Kenneth S. Kendler,Jesper Ekelund,Tiina Paunio,Jouko Lönnqvist,Leena Peltonen,Leena Peltonen,Michael Conlon O'Donovan,Michael John Owen,Dieter B. Wildenauer,Wolfgang Maier,Gerald Nestadt,Jean-Louis Blouin,Stylianos E. Antonarakis,Bryan J. Mowry,Jeremy M. Silverman,Raymond R. Crowe,C. Robert Cloninger,Ming T. Tsuang,Dolores Malaspina,Jill M. Harkavy-Friedman,Dragan M. Svrakic,Anne S. Bassett,Jennifer A. Holcomb,Gursharan Kalsi,Andrew McQuillin,Jon Brynjolfson,Thordur Sigmundsson,Hannes Petursson,Elena Jazin,Tómas Zoega,Tómas Helgason +54 more
TL;DR: The GSMA produced significant genomewide evidence for linkage on chromosome 2q and suggests that some or all of these regions contain loci that increase susceptibility to schizophrenia in diverse populations.
Journal ArticleDOI
A genetic risk factor for periodic limb movements in sleep
Hreinn Stefansson,David B. Rye,Andrew A. Hicks,H. Petursson,Andres Ingason,Thorgeir E. Thorgeirsson,Stefan T Palsson,Thordur Sigmundsson,Albert P. Sigurdsson,Ingibjorg Eiriksdottir,Emilia Soebech,Donald L. Bliwise,Joseph M. Beck,Ami Rosen,Salina P. Waddy,Lynn Marie Trotti,Alex Iranzo,Madhav Thambisetty,Gudmundur A. Hardarson,Kristleifur Kristjansson,Larus J. Gudmundsson,Unnur Thorsteinsdottir,Augustine Kong,Jeffrey R. Gulcher,Daniel F. Gudbjartsson,Kari Stefansson +25 more
TL;DR: The inverse correlation of the variant with iron stores is consistent with the suspected involvement of iron depletion in the pathogenesis of the disease and is associated with susceptibility to periodic limb movements in sleep.