Blar i Department of Clinical Medicine på forfatter "Wik, Elisabeth"
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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. ... -
Baseline microvessel density predicts response to neoadjuvant bevacizumab treatment of locally advanced breast cancer
Krüger, Kristi; Silwal-Pandit, Laxmi; Wik, Elisabeth; Straume, Oddbjørn; Stefansson, Ingunn Marie; Borgen, Elin; Garred, Øystein; Naume, Bjørn; Engebråten, Olav; Akslen, Lars Andreas (Journal article; Peer reviewed, 2021)A subset of breast cancer patients benefits from preoperative bevacizumab and chemotherapy, but validated predictive biomarkers are lacking. Here, we aimed to evaluate tissue-based angiogenesis markers for potential ... -
Breast cancer stromal elastosis is associated with mammography screening detection, low Ki67 expression and favourable prognosis in a population-based study
Chen, Ying; Klingen, Tor Audun; Wik, Elisabeth; Aas, Hans; Vigeland, Einar; Liestøl, Knut; Garred, Øystein; Mæhlen, Jan; Akslen, Lars A.; Lømo, Jon (Peer reviewed; Journal article, 2014-12-19)Background: Mammography screen-detected breast cancers have a better prognosis than predicted from established prognostic markers. A search for additional features that are characteristic for these tumours and their prognosis ... -
C77G in PTPRC (CD45) is no risk allele for ovarian cancer, but associated with less aggressive disease
Landskron, Johannes; Kraggerud, Sigrid M.; Wik, Elisabeth; Dørum, Anne; Bjørnslett, Merete Pauline; Melum, Espen; Helland, Øystein; Bjørge, Line; Lothe, Ragnhild A; Salvesen, Helga; Tasken, Kjetil (Peer reviewed; Journal article, 2017-07-31)The pan lymphocyte marker CD45 exists in various isoforms arising from alternative splicing of the exons 4, 5 and 6. While naïve T cells express CD45RA translated from an mRNA containing exon 4, exons 4–6 are spliced out ... -
CD47 and CD68 expression in breast cancer is associated with tumor-infiltrating lymphocytes, blood vessel invasion, detection mode, and prognosis
Chen, Ying; Klingen, Tor Audun; Aas, Hans; Wik, Elisabeth; Akslen, Lars Andreas (Journal article; Peer reviewed, 2023)CD47 expressed on tumor cells binds to signal regulatory protein alpha on macrophages, initiating inhibition of phagocytosis. We investigated the relationships between tumor expression of CD47 and CD68 macrophage content, ... -
Fibulin-2 expression associates with vascular invasion and patient survival in breast cancer
Klingen, Tor Audun; Chen, Ying; Aas, Hans; Wik, Elisabeth; Akslen, Lars Andreas (Journal article; Peer reviewed, 2021)Stromal elastosis is related to good prognosis in breast cancer and fibulin-2 helps to stabilize elastic fibers in basement membranes. Here, we examined the level of perivascular fibulin-2 expression in relation to elastosis ... -
High-Throughput Mutation Profiling of Primary and Metastatic Endometrial Cancers Identifies KRAS, FGFR2 and PIK3CA to Be Frequently Mutated
Krakstad, Camilla; Birkeland, Even; Seidel, Danila; Kusonmano, Kanthida; Petersen, Kjell; Mjøs, Siv; Høivik, Erling Andre; Wik, Elisabeth; Halle, Mari Kyllesø; Øyan, Anne Margrete; Kalland, Karl-Henning; Werner, Henrica Maria Johanna; Trovik, Jone; Salvesen, Helga Birgitte (Peer reviewed; Journal article, 2012-12-27)Background: Despite being the most common pelvic gynecologic malignancy in industrialized countries, no targeted therapies are available for patients with metastatic endometrial carcinoma. In order to improve treatment, ... -
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 ... -
Hypoxia induced responses are reflected in the stromal proteome of breast cancer
Kjølle, Silje; Finne, Kenneth; Birkeland, Even; Ardawatia, Vandana; Winge, Ingeborg; Aziz, Sura Mohammed; Knutsvik, Gøril; Wik, Elisabeth; Paulo, Joao A.; Vethe, Heidrun; Kleftogiannis, Dimitrios; Akslen, Lars Andreas (Journal article; Peer reviewed, 2023)Cancers are often associated with hypoxia and metabolic reprogramming, resulting in enhanced tumor progression. Here, we aim to study breast cancer hypoxia responses, focusing on secreted proteins from low-grade (luminal-like) ... -
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 ... -
Integrin α11β1 is expressed in breast cancer stroma and associates with aggressive tumor phenotypes
Smeland, Hilde Ytre-Hauge; Askeland, Cecilie; Wik, Elisabeth; Knutsvik, Gøril; Molven, Anders; Edelmann, RJ; Reed, Rolf K.; Warren, DJ; Gullberg, Donald; Stuhr, Linda Elin Birkhaug; Akslen, Lars A. (Peer reviewed; Journal article, 2020)Cancer‐associated fibroblasts are essential modifiers of the tumor microenvironment. The collagen‐binding integrin α11β1 has been proposed to be upregulated in a pro‐tumorigenic subtype of cancer‐associated fibroblasts. ... -
KRAS gene amplification and overexpression but not mutation associates with aggressive and metastatic endometrial cancer
Birkeland, Even; Wik, Elisabeth; Mjøs, Siv; Høivik, Erling Andre; Trovik, Jone; Werner, Henrica Maria Johanna; Kusonmano, Kanthida; Petersen, Kjell; Ræder, Maria B.; Holst, Frederik; Øyan, Anne Margrete; Kalland, Karl-Henning; Akslen, Lars A.; Simon, Ronald; Krakstad, Camilla; Salvesen, Helga Birgitte (Peer reviewed; Journal article, 2012)BACKGROUND: Three quarter of endometrial carcinomas are treated at early stage. Still, 15 to 20% of these patients experience recurrence, with little effect from systemic therapies. Homo sapiens v-Ki-ras2 Kirsten rat sarcoma ... -
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, ... -
MRPS23 amplification and gene expression in breast cancer; association with proliferation and the non-basal subtypes
Klæstad, Elise; Opdahl, Signe; Engstrøm, Monica J; Ytterhus, Borgny; Wik, Elisabeth; Bofin, Anna Mary; Valla, Marit (Journal article; Peer reviewed, 2020-01-16)Purpose MRPS23 is recognized as a driver of proliferation in luminal breast cancer. The aims of the present study were to describe MRPS23 copy number change in breast cancer, and to assess associations between MRPS23 copy ... -
A novel age-related gene expression signature associates with proliferation and disease progression in breast cancer
Ingebriktsen, Lise Martine; Finne, Kenneth; Akslen, Lars Andreas; Wik, Elisabeth (Journal article; Peer reviewed, 2022)Background and objective Breast cancer (BC) diagnosed at ages <40 years presents with more aggressive tumour phenotypes and poorer clinical outcome compared to older BC patients. Here, we explored transcriptional BC ... -
Tumor-associated lymphocytes and macrophages are related to stromal elastosis and vascular invasion in breast cancer
Chen, Ying; Klingen, Tor Audun; Aas, Hans; Wik, Elisabeth; Akslen, Lars Andreas (Journal article; Peer reviewed, 2021)The tumor microenvironment plays a critical role in breast cancer progression. Here, we investigated tumor-infiltrating lymphocytes (TILs) and associations with macrophage numbers, tumor stromal elastosis, vascular invasion, ... -
Vessel size as a marker of survival in estrogen receptor positive breast cancer
Milosevic, Vladan; Edelmann, Reidunn Jetne; Winge, Ingeborg; Strell, Carina; Mezheyeuski, Artur; Knutsvik, Gøril; Askeland, Cecilie; Wik, Elisabeth; Akslen, Lars Andreas; Östman, Arne (Journal article; Peer reviewed, 2023)Purpose: Angiogenesis is crucial for tumor growth and is one of the hallmarks of cancer. In this study, we analyzed microvessel density, vessel median size, and perivascular a-SMA expression as prognostic biomarkers in ...