Blar i Faculty of Medicine på forfatter "Stefansson, Ingunn"
-
An 18-Gene signature for vascular invasion is associated with aggressive features and reduced survival in breast cancer
Mannelqvist, Monica; Wik, Elisabeth; Stefansson, Ingunn; Akslen, Lars A. (Peer reviewed; Journal article, 2014-06-06)Aims: Vascular invasion by tumor cells is known to be important for cancer progression. By microarray and qPCR analyses, we earlier identified an 18-gene signature associated with vascular involvement in endometrial cancer. ... -
ATAD2 overexpression links to enrichment of B-MYBtranslational signatures and development of aggressive endometrial carcinoma
Krakstad, Camilla; Tangen, Ingvild Løberg; Høivik, Erling Andre; Halle, Mari Kyllesø; Berg, Anna; Werner, Henrica Maria Johanna; Ræder, Maria B.; Kusonmano, Kanthida; Zou, June; Øyan, Anne Margrete; Stefansson, Ingunn; Trovik, Jone; Kalland, Karl-Henning; Chen, Hong-Wu; Salvesen, Helga Birgitte (Peer reviewed; Journal article, 2015)We have explored the potential for clinical implementation of ATAD2 as a biomarker for aggressive endometrial cancer by investigating to what extent immunohistochemical (IHC) staining for ATAD2 is feasible, reflects clinical ... -
Evaluation of Ki67 expression across distinct categories of breast cancer specimens: A Population-based study of matched surgical specimens, core needle biopsies and tissue microarrays
Knutsvik, Gøril; Stefansson, Ingunn; Aziz, Sura Mohammed; Arnes, Jarle; Eide, Johan; Collett, Karin; Akslen, Lars A. (Peer reviewed; Journal article, 2014-11-06)Introduction: Tumor cell proliferation in breast cancer is strongly prognostic and may also predict response to chemotherapy. However, there is no consensus on counting areas or cut-off values for patient stratification. ... -
Expression of thyroid transcription factor-1 is associated with a basal-like phenotype in breast carcinomas
Klingen, Tor Audun; Chen, Ying; Suhrke, Pål; Stefansson, Ingunn; Gundersen, Marian D.; Akslen, Lars A. (Peer reviewed; Journal article, 2013-05-15)Background: The differential diagnosis between primary and secondary breast cancers might be difficult, especially in poorly differentiated tumors. Thyroid Transcription Factor-1 (TTF-1) has been regarded as a reliable ... -
HER2 expression patterns in paired primary and metastatic endometrial cancer lesions
Halle, Mari Kyllesø; Tangen, Ingvild Løberg; Berg, Hege Fredriksen; Hoivik, Erling A; Mauland, Karen Klepsland; Kusonmano, Kanthida; Berg, Anna; Hurtado, Antoni; Kalland, Karl-Henning; Øyan, Anne Margrete; Stefansson, Ingunn; Vintermyr, Olav Karsten; Werner, Henrica Maria Johanna; Haldorsen, Ingfrid S.; Trovik, Jone; Salvesen, Helga Birgitte; Krakstad, Camilla (Peer reviewed; Journal article, 2017-11-23)Background: Despite successful implementation of drugs targeting the human epidermal growth factor receptor 2 (HER2) receptor in breast and gastric cancers, the potential of HER2 as a therapeutic target in other cancers ... -
Hormone receptor loss in endometrial carcinoma curettage predicts lymph node metastasis and poor outcome in prospective multicentre trial
Trovik, Jone; Wik, Elisabeth; Werner, Henrica Maria Johanna; Krakstad, Camilla; Helland, Harald; Vandenput, Ingrid; Njølstad, Tormund Salvesen; Stefansson, Ingunn; Marcickiewicz, Janusz; Tingulstad, Solveig; Staff, Anne Cathrine; Amant, Frédéric; Akslen, Lars A.; Salvesen, Helga Birgitte (Peer reviewed; Journal article, 2013-11)Background: Preoperative histologic examination of tumour tissue is essential when deciding if endometrial cancer surgery should include lymph node sampling. We wanted to investigate if biomarkers could improve prediction ... -
Increased microvascular proliferation is negatively correlated to tumour blood flow and is associated with unfavourable outcome in endometrial carcinomas
Haldorsen, Ingfrid S.; Stefansson, Ingunn; Grüner, Renate; Husby, Jenny Hild Aase; Magnussen, Inger Johanne; Werner, Henrica Maria Johanna; Salvesen, Øyvind; Bjørge, Line; Trovik, Jone; Taxt, Torfinn; Akslen, Lars A.; Salvesen, Helga Birgitte (Peer reviewed; Journal article, 2014)Background: We aimed to study the angiogenic profile based on histomorphological markers in endometrial carcinomas in relation to imaging parameters obtained from preoperative dynamic contrast-enhanced magnetic resonance ... -
Influence of p53 isoform expression on survival in high-grade serous ovarian cancers
Bischof, Katharina; Knappskog, Stian; Hjelle, Sigrun Margrethe; Stefansson, Ingunn; Woie, Kathrine; Salvesen, Helga; Gjertsen, Bjørn Tore; Bjørge, Line (Peer reviewed; Journal article, 2019-03-27)High-grade serous ovarian carcinoma (HGSOC) is characterised by alterations in the p53 pathway. The expression levels of p53 isoforms have been shown to be associated with patient survival in several cancers. This study ... -
Integrated Genomic Analysis of the 8q24 Amplification in Endometrial Cancers Identifies ATAD2 as Essential to MYC-Dependent Cancers
Ræder, Maria B.; Birkeland, Even; Trovik, Jone; Krakstad, Camilla; Shehata, Shyemaa; Schumacher, Steven; Zack, Travis I.; Krohn, Antje; Werner, Henrica Maria Johanna; Moody, Susan E.; Wik, Elisabeth; Stefansson, Ingunn; Holst, Frederik; Øyan, Anne Margrete; Tamayo, Pablo; Mesirov, Jill P.; Kalland, Karl-Henning; Akslen, Lars A.; Simon, Ronald; Beroukhim, Rameen; Salvesen, Helga Birgitte (Peer reviewed; Journal article, 2013-02-05)Chromosome 8q24 is the most commonly amplified region across multiple cancer types, and the typical length of the amplification suggests that it may target additional genes to MYC. To explore the roles of the genes most ... -
Lipocalin 2 expression is associated with aggressive features of endometrial cancer
Mannelqvist, Monica; Stefansson, Ingunn; Wik, Elisabeth; Kusonmano, Kanthida; Ræder, Maria B.; Øyan, Anne Margrete; Kalland, Karl-Henning; Moses, Marsha A.; Salvesen, Helga Birgitte; Akslen, Lars A. (Peer reviewed; Journal article, 2012-05-06)Background: Increased expression of lipocalin 2 (LCN2) has been observed in several cancers. The aim of the present study was to investigate LCN2 in endometrial cancer in relation to clinico-pathologic phenotype, angiogenesis, ... -
Near-Infrared Fluorescent Imaging for Monitoring of Treatment Response in Endometrial Carcinoma Patient-Derived Xenograft Models.
Fonnes, Tina; Strand, Elin; Fasmer, Kristine Eldevik; Berg, Hege Fredriksen; Espedal, Heidi; Sortland, Kristina; Stefansson, Ingunn; Bjørge, Line; Haldorsen, Ingfrid S.; Krakstad, Camilla; Mc Cormack, Emmet (Journal article; Peer reviewed, 2020)Imaging of clinically relevant preclinical animal models is critical to the development of personalized therapeutic strategies for endometrial carcinoma. Although orthotopic patient-derived xenografts (PDXs) reflecting ... -
Preoperative tumor size at MRI predicts deep myometrial invasion, lymph node metastases, and patient outcome in endometrial carcinomas
Ytre-Hauge, Sigmund; Husby, Jenny Hild Aase; Magnussen, Inger Johanne; Werner, Henrica Maria Johanna; Salvesen, Øyvind; Bjørge, Line; Trovik, Jone; Stefansson, Ingunn; Salvesen, Helga Birgitte; Haldorsen, Ingfrid S. (Peer reviewed; Journal article, 2015)OBJECTIVE: The aim of this study was to explore the relation between preoperative tumor size based on magnetic resonance imaging (MRI) and the surgical pathologic staging parameters (deep myometrial invasion, cervical ... -
Stathmin expression associates with vascular and immune responses in aggressive breast cancer subgroups
Askeland, Cecilie; Wik, Elisabeth; Finne, Kenneth; Birkeland, Even; Arnes, Jarle; Collett, Karin; Knutsvik, Gøril; Krüger, Kristi; Davidsen, Benedicte; Aas, Turid; Eide, Geir Egil; Stefansson, Ingunn; Foulkes, William; Akslen, Lars A. (Journal article; Peer reviewed, 2020)Studies indicate that stathmin expression associates with PI3K activation in breast cancer, suggesting stathmin as a marker for targetable patient subgroups. Here we assessed stathmin in relation to tumour proliferation, ...