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Thorvaldur Jonsson
Researcher at University of Iceland
Publications - 30
Citations - 7321
Thorvaldur Jonsson is an academic researcher from University of Iceland. The author has contributed to research in topics: Population & Cancer. The author has an hindex of 20, co-authored 30 publications receiving 6703 citations. Previous affiliations of Thorvaldur Jonsson include Reykjavík University.
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Journal ArticleDOI
Genome-wide association yields new sequence variants at seven loci that associate with measures of obesity
Gudmar Thorleifsson,G. Bragi Walters,Daniel F. Gudbjartsson,Valgerdur Steinthorsdottir,Patrick Sulem,Anna Helgadottir,Unnur Styrkarsdottir,Solveig Gretarsdottir,Steinunn Thorlacius,Ingileif Jonsdottir,Ingileif Jonsdottir,Thorbjorg Jonsdottir,Elinborg J Olafsdottir,Gudridur H Olafsdottir,Thorvaldur Jonsson,Frosti Jonsson,Knut Borch-Johnsen,Knut Borch-Johnsen,Torben Hansen,Gitte Andersen,Torben Jørgensen,Torben Jørgensen,Torsten Lauritzen,Katja K.H. Aben,André L. M. Verbeek,Nel Roeleveld,Ellen Kampman,Lisa R. Yanek,Lewis C. Becker,Laufey Tryggvadottir,Thorunn Rafnar,Diane M. Becker,Jeffrey R. Gulcher,Lambertus A. Kiemeney,Oluf Pedersen,Oluf Pedersen,Augustine Kong,Unnur Thorsteinsdottir,Unnur Thorsteinsdottir,Kari Stefansson,Kari Stefansson +40 more
TL;DR: In total, 29 variants, some correlated, in 11 chromosomal regions reached a genome-wide significance threshold of P < 1.6 × 10−7 and included previously identified variants close to or in the FTO, MC4R, BDNF and SH2B1 genes, in addition to variants at seven loci not previously connected with obesity.
Journal ArticleDOI
Common variants on chromosomes 2q35 and 16q12 confer susceptibility to estrogen receptor-positive breast cancer.
Simon N. Stacey,Andrei Manolescu,Patrick Sulem,Thorunn Rafnar,Julius Gudmundsson,Sigurjon A. Gudjonsson,Gisli Masson,Margret Jakobsdottir,Steinunn Thorlacius,Agnar Helgason,Katja K.H. Aben,Luc J Strobbe,Marjo T Albers-Akkers,Dorine W. Swinkels,Brian E. Henderson,Laurence N. Kolonel,Loic Le Marchand,Esther Millastre,Raquel Andrés,Javier Godino,Maria D. Garcia-Prats,E. Polo,Alejandro Tres,Magali Mouy,Jona Saemundsdottir,Valgerdur M Backman,Larus J. Gudmundsson,Kristleifur Kristjansson,Jon Thor Bergthorsson,Jelena Kostic,Michael L. Frigge,Frank Geller,Daniel F. Gudbjartsson,Helgi Sigurdsson,Thora Jonsdottir,Jon Hrafnkelsson,Jakob Johannsson,Thorarinn Sveinsson,Gardar Myrdal,Hlynur Niels Grimsson,Thorvaldur Jonsson,Susanna von Holst,Barbro Werelius,Sara Margolin,Annika Lindblom,Jose I. Mayordomo,Christopher A. Haiman,Lambertus A. Kiemeney,Oskar T. Johannsson,Jeffrey R. Gulcher,Unnur Thorsteinsdottir,Augustine Kong,Kari Stefansson +52 more
TL;DR: Two SNPs consistently associated with breast cancer are identified: rs3803662 is near the 5′ end of TNRC9 , a high mobility group chromatin–associated protein whose expression is implicated in breast cancer metastasis to bone.
Journal ArticleDOI
Many sequence variants affecting diversity of adult human height
Daniel F. Gudbjartsson,G. Bragi Walters,Gudmar Thorleifsson,Hreinn Stefansson,Bjarni V. Halldorsson,Bjarni V. Halldorsson,Pasha Zusmanovich,Patrick Sulem,Steinunn Thorlacius,Arnaldur Gylfason,Stacy Steinberg,Anna Helgadottir,Andres Ingason,Valgerdur Steinthorsdottir,Elinborg J Olafsdottir,Gudridur H Olafsdottir,Thorvaldur Jonsson,Knut Borch-Johnsen,Knut Borch-Johnsen,Torben Hansen,Gitte Andersen,Torben Jørgensen,Oluf Pedersen,Oluf Pedersen,Katja K.H. Aben,J. Alfred Witjes,Dorine W. Swinkels,Martin den Heijer,Barbara Franke,André L. M. Verbeek,Diane M. Becker,Lisa R. Yanek,Lewis C. Becker,Laufey Tryggvadottir,Thorunn Rafnar,Jeffrey R. Gulcher,Lambertus A. Kiemeney,Augustine Kong,Unnur Thorsteinsdottir,Kari Stefansson +39 more
TL;DR: Twenty-seven regions of the genome are identified with one or more sequence variants showing significant association with height and the strongest association was with SNPs in the ZBTB38 gene.
Journal ArticleDOI
Sequence variants at the TERT-CLPTM1L locus associate with many cancer types.
Thorunn Rafnar,Patrick Sulem,Simon N. Stacey,Frank Geller,Julius Gudmundsson,Asgeir Sigurdsson,Margret Jakobsdottir,Hafdis T. Helgadottir,Steinunn Thorlacius,Katja K H Aben,Thorarinn Blondal,Thorgeir E. Thorgeirsson,Gudmar Thorleifsson,Kristleifur Kristjansson,Kristin Thorisdottir,Rafn Ragnarsson,Bardur Sigurgeirsson,Halla Skuladottir,Tomas Gudbjartsson,Helgi J Isaksson,Gudmundur V. Einarsson,Kristrun R. Benediktsdottir,Bjarni A. Agnarsson,Karl Olafsson,Anna Salvarsdottir,Hjordis Bjarnason,Margret Asgeirsdottir,Kari T. Kristinsson,Sigurborg Matthiasdottir,Steinunn G Sveinsdottir,Silvia Polidoro,Veronica Höiom,Rafael Botella-Estrada,Kari Hemminki,Peter Rudnai,D. Timothy Bishop,Marcello Campagna,Eliane Kellen,Maurice P. Zeegers,Maurice P. Zeegers,Petra J. de Verdier,Ana Ferrer,Dolores Isla,Maria Vidal,Raquel Andrés,Berta Saez,Pablo Juberías,Javier Banzo,Sebastian Navarrete,Alejandro Tres,Donghui Kan,Annika Lindblom,Eugene Gurzau,Kvetoslava Koppova,Femmie de Vegt,Jack A. Schalken,Henricus F. M. van der Heijden,Hans J Smit,René A Termeer,Egbert Oosterwijk,Onno van Hooij,Eduardo Nagore,Stefano Porru,Gunnar Steineck,Gunnar Steineck,Johan Hansson,Frank Buntinx,Frank Buntinx,William J. Catalona,Giuseppe Matullo,Paolo Vineis,Anne E. Kiltie,Jose I. Mayordomo,Rajesh Kumar,Lambertus A. Kiemeney,Michael L. Frigge,Thorvaldur Jonsson,Hafsteinn Saemundsson,Rosa B. Barkardottir,Eirikur Jonsson,Steinn Jonsson,Jón Ólafsson,Jeffrey R. Gulcher,Gisli Masson,Daniel F. Gudbjartsson,Augustine Kong,Unnur Thorsteinsdottir,Unnur Thorsteinsdottir,Kari Stefansson,Kari Stefansson +89 more
TL;DR: It is found that rs401681[C] on chromosome 5p15 satisfied the threshold for genome-wide significance and seems to confer protection against cutaneous melanoma, and investigation of the region led to rs2736098[A], which showed stronger association with some cancer types, but neither variant could fully account for the association of the other.
Journal ArticleDOI
Parental origin of sequence variants associated with complex diseases
Augustine Kong,Valgerdur Steinthorsdottir,Gisli Masson,Gudmar Thorleifsson,Patrick Sulem,Søren Besenbacher,Aslaug Jonasdottir,Asgeir Sigurdsson,Kari T. Kristinsson,Adalbjorg Jonasdottir,Michael L. Frigge,Arnaldur Gylfason,Pall I. Olason,Sigurjon A. Gudjonsson,Sverrir T. Sverrisson,Simon N. Stacey,Bardur Sigurgeirsson,Kristrun R. Benediktsdottir,Helgi Sigurdsson,Thorvaldur Jonsson,Rafn Benediktsson,Jón Ólafsson,Oskar T. Johannsson,Astradur B. Hreidarsson,Gunnar Sigurdsson,Anne C. Ferguson-Smith,Daniel F. Gudbjartsson,Unnur Thorsteinsdottir,Unnur Thorsteinsdottir,Kari Stefansson,Kari Stefansson +30 more
TL;DR: It is shown that for 38,167 Icelanders genotyped using single nucleotide polymorphism (SNP) chips, the parental origin of most alleles can be determined and a novel association between the SNP rs2334499 at 11p15 and type 2 diabetes is observed.