J
Johannes Bjornsson
Researcher at University of Iceland
Publications - 73
Citations - 4360
Johannes Bjornsson is an academic researcher from University of Iceland. The author has contributed to research in topics: Giant cell arteritis & Cancer. The author has an hindex of 31, co-authored 73 publications receiving 4115 citations. Previous affiliations of Johannes Bjornsson include Mayo Clinic & University of Rochester.
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Journal ArticleDOI
Mutations in BRIP1 confer high risk of ovarian cancer
Thorunn Rafnar,Daniel F. Gudbjartsson,Patrick Sulem,Aslaug Jonasdottir,Asgeir Sigurdsson,Adalbjorg Jonasdottir,Søren Besenbacher,Pär Lundin,Simon N. Stacey,Julius Gudmundsson,Olafur T. Magnusson,Louise le Roux,Gudbjorg Orlygsdottir,Hafdis T. Helgadottir,Hrefna Johannsdottir,Arnaldur Gylfason,Laufey Tryggvadottir,Jon G. Jonasson,Ana de Juan,Eugenia Ortega,Jose M. Ramon-Cajal,Maria D. Garcia-Prats,Carlos Mayordomo,Angeles Panadero,Fernando Rivera,Katja K.H. Aben,Anne M. van Altena,Leon F.A.G. Massuger,Mervi Aavikko,Paula Kujala,Synnöve Staff,Lauri A. Aaltonen,Kristrun Olafsdottir,Johannes Bjornsson,Augustine Kong,Anna Salvarsdottir,Hafsteinn Saemundsson,Karl Olafsson,Kristrun R. Benediktsdottir,Jeffrey R. Gulcher,Gisli Masson,Lambertus A. Kiemeney,Jose I. Mayordomo,Unnur Thorsteinsdottir,Unnur Thorsteinsdottir,Kari Stefansson,Kari Stefansson +46 more
TL;DR: Ovarian tumors from heterozygous carriers of the Icelandic mutation show loss of the wild-type allele, indicating that BRIP1 behaves like a classical tumor suppressor gene in ovarian cancer.
Journal ArticleDOI
Primary chondrosarcoma of long bones and limb girdles
TL;DR: Chondrosarcomas are common solid malignant tumors of bone, second in incidence only to osteosarcoma, and require long follow‐up intervals for meaningful survival analysis.
Journal ArticleDOI
Cancer as a complex phenotype: pattern of cancer distribution within and beyond the nuclear family.
Laufey T. Amundadottir,Sverrir Thorvaldsson,Daniel F. Gudbjartsson,Patrick Sulem,Kristleifur Kristjansson,Sigurdur Arnason,Jeffrey R. Gulcher,Johannes Bjornsson,Augustine Kong,Unnur Thorsteinsdottir,Kari Stefansson +10 more
TL;DR: It is concluded that genetic factors are involved in the etiology of many cancers and that these factors are in some cases shared by different cancer sites, and a significantly increased RR conferred upon mates of patients with cancer at some sites indicates that shared environment or nonrandom mating for certain risk factors also play a role in the familial clustering of cancer.
Journal Article
Tuberous sclerosis-associated renal cell carcinoma : Clinical, pathological, and genetic features
TL;DR: The findings suggest that some TSC-associated RCCs have clinical, pathological, or genetic features distinguishing them from sporadic RCC, and that the TSC tumor suppressor genes may play a specific pathogenic role in these tumors.
Journal ArticleDOI
Formation of new vasa vasorum in vasculitis. Production of angiogenic cytokines by multinucleated giant cells.
TL;DR: In this article, the formation of new vasa vasorum is regulated by inflammatory cells and not by arterial wall cells, raising the possibility that it represents a primary disease mechanism and not a secondary hypoxia-induced event.