• Current guidelines for BRCA testing of breast cancer patients are insufficient to detect all mutation carriers 

      Grindedal, Eli Marie; Heramb, Cecilie; Karsrud, Inga; Ariansen, Sarah Louise; Mæhle, Lovise Olaug; Undlien, Dag Erik; Norum, Jan; Schlichting, Ellen (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-06-21)
      Background: <br> Identification of BRCA mutations in breast cancer (BC) patients influences treatment and survival and may be of importance for their relatives. Testing is often restricted to women fulfilling high-risk criteria. However, there is limited knowledge of the sensitivity of such a strategy, and of the clinical aspects of BC caused by BRCA mutations in less selected BC cohorts. The aim ...
    • Dietary changes in early-stage breast cancer patients from pre-surgery and over the 12 months post-surgery 

      Brunvoll, Sonja Hjellegjerde; Thune, Inger; Bertheussen, Gro Falkener; Fjeldheim, Frøydis Nyborg; Flote, Vidar Gordon; Frydenberg, Hanne; Lundgren, Steinar; Skjerven, Helle; Lømo, Jon; Fagerland, Morten; McTiernan, Anne; Schlichting, Ellen; Hjartåker, Anette (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-08-19)
      The time after a breast cancer diagnosis is a potential period for making positive dietary changes, but previous results are conflicting. The main aim of the present study was to study breast cancer patients’ dietary changes during the 12 months post-surgery and from 12 months pre-surgery to 12 months post-surgery with repeated administration of a 7-d pre-coded food diary and an FFQ, respectively. ...
    • Inflammation of mammary adipose tissue occurs in overweight and obese patients exhibiting early-stage breast cancer 

      Vaysse, Charlotte; Lømo, Jon; Garred, Øystein; Fjeldheim, Frøydis Nyborg; Lofterød, Trygve; Schlichting, Ellen; McTiernan, Anne; Frydenberg, Hanne; Husøy, Anders; Lundgren, Steinar; Fagerland, Morten W; Richardsen, Elin; Wist, Erik; Muller, Catherine; Thune, Inger (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-05-03)
      Growing evidence indicates that adiposity is associated with breast cancer risk and negatively affects breast cancer recurrence and survival, a paracrine role of mammary adipose tissue being very likely in this process. In contrast to other adipose depots, occurrence of a sub-inflammatory state of mammary adipose tissue defined by dying adipocytes surrounded by macrophages forming crown-like structures ...
    • “It was an important part of my treatment”: a qualitative study of Norwegian breast Cancer patients’ experiences with mainstreamed genetic testing 

      Strømsvik, Nina; Olsson, Pernilla Marie A.; Gravdehaug, Berit; Lurås, Hilde; Schlichting, Ellen; Jørgensen, Kjersti; Wangensteen, Teresia; Vamre, Tone; Heramb, Cecilie; Mæhle, Lovise Olaug; Grindedal, Eli Marie (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-02-05)
      Background - In South-Eastern Norway, genetic testing for BRCA1 and BRCA2 is offered to breast cancer patients by their treating surgeon or oncologist. Genetic counselling from a geneticist or a genetic counsellor is offered only to those who test positive for a pathogenic variant or have a family history of cancer. This practice is termed “mainstreamed genetic testing”. The aim of this study was ...
    • LIMT is a novel metastasis inhibiting lncRNA suppressed by EGF and downregulated in aggressive breast cancer 

      Sas-Chen, Aldema; Aure, Miriam Ragle; Leibovich, Limor; Carvalho, Silvia; Enuka, Yehoshua; Körner, Cindy; Polycarpou-Schwarz, Maria; Lavi, Sara; Nevo, Nava; Kuznetsov, Yuri; Yuan, Justin; Azuaje, Francisco; Ulitsky, Igor; Diederichs, Sven; Wiemann, Stefan; Yakhini, Zohar; Kristensen, Vessela N.; Børresen-Dale, Anne-Lise; Yarden, Yosef; Sauer, Torill; Geisler, Jürgen; Hofvind, Solveig; Bathen, Tone Frost; Borgen, Elin; Engebråten, Olav; Fodstad, Øystein; Garred, Øystein; Geitvik, Gry; Kåresen, Rolf; Naume, Bjørn; Mælandsmo, Gunhild; Russnes, Hege Elisabeth Giercksky; Schlichting, Ellen; Sørlie, Therese; Lingjærde, Ole Christian; Sahlberg, Kristine Kleivi; Skjerven, Helle; Fritzman, Britt (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-09-01)
      Long noncoding RNAs (lncRNAs) are emerging as regulators of gene expression in pathogenesis, including cancer. Recently, lncRNAs have been implicated in progression of specific subtypes of breast cancer. One aggressive, basal-like subtype associates with increased EGFR signaling, while another, the HER2-enriched subtype, engages a kin of EGFR Based on the premise that EGFR-regulated lncRNAs might ...
    • Lipoprotein subfractions by nuclear magnetic resonance are associated with tumor characteristics in breast cancer 

      Flote, Vidar Gordon; Vettukattil, Muhammad Riyas; Bathen, Tone Frost; Egeland, Thore; McTiernan, Anne; Frydenberg, Hanne; Husøy, Anders; Finstad, Sissi Espetvedt; Lømo, Jon; Garred, Øystein; Schlichting, Ellen; Wist, Erik; Thune, Inger (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-11-08)
      <b>Background:</b> High-Density Lipoprotein (HDL)-cholesterol, has been associated with breast cancer development, but the association is under debate, and whether lipoprotein subfractions is associated with breast tumor characteristics remains unclear.<br> <b>Methods:</b> Among 56 women with newly diagnosed invasive breast cancer stage I/II, aged 35–75 years, pre-surgery overnight fasting serum ...
    • Metabolite and lipoprotein responses and prediction of weight gain during breast cancer treatment 

      Madssen, Torfinn Støve; Thune, Inger; Flote, Vidar Gordon; Lundgren, Steinar; Bertheussen, Gro Falkener; Frydenberg, Hanne; Wist, Erik; Schlichting, Ellen; Schäfer, Hartmut; Fjøsne, Hans Erikssønn; Vettukattil, Muhammad Riyas; Lømo, Jon; Bathen, Tone Frost; Giskeødegård, Guro F. (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-11-07)
      <p><i>Background</i>: Breast cancer treatment has metabolic side effects, potentially affecting risk of cardiovascular disease (CVD) and recurrence. We aimed to compare alterations in serum metabolites and lipoproteins during treatment between recipients and non-recipients of chemotherapy, and describe metabolite profiles associated with treatment-related weight gain.</p> <p><i>Methods</i>: This ...
    • Peripheral blood cells inform on the presence of breast cancer: A population‐based case–control study 

      Dumeaux, Vanessa; Ursini‐Siegel, Josie; Flatberg, Arnar; Fjøsne, Hans Erikssønn; Frantzen, Jan Ole; Holmen, Marit Muri; Rodegerdts, Enno; Schlichting, Ellen; Lund, Eiliv (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-06-14)
      Tumor–host interactions extend beyond the local microenvironment and cancer development largely depends on the ability of malignant cells to hijack and exploit the normal physiological processes of the host. Here, we established that many genes within peripheral blood cells show differential expression when an untreated breast cancer (BC) is present, and harnessed this fact to construct a 50-gene ...
    • Predictive and Prognostic Impact of TP53 Mutations and MDM2 Promoter Genotype in Primary Breast Cancer Patients Treated with Epirubicin or Paclitaxel 

      Chrisanthar, Ranjan; Knappskog, Stian; Løkkevik, Erik; Anker, Gun Birgitta; Østenstad, Bjørn; Lundgren, Steinar; Risberg, Terje; Mjaaland, Ingvil; Skjønsberg, Gudbrand; Aas, Turid; Schlichting, Ellen; Fjøsne, Hans Erikssønn; Nysted, Arne; Lillehaug, Johan R.; Lønning, Per Eystein (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
      TP53 mutations have been associated with resistance to anthracyclines but not to taxanes in breast cancer patients. The MDM2 promoter single nucleotide polymorphism (SNP) T309G increases MDM2 activity and may reduce wildtype p53 protein activity. Here, we explored the predictive and prognostic value of TP53 and CHEK2 mutation status together with MDM2 SNP309 genotype in stage III breast cancer ...
    • Treatment of ductal carcinoma in situ: a register-based study of Norwegian women diagnosed between 1995 and 2018 

      Skjerven, Helle; Danielsen, Anders Skyrud; Schlichting, Ellen; Sahlberg, Kristine Kleivi; Hofvind, Solveig Sand-Hanssen (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-04-21)
      Introduction: The incidence of ductal carcinoma in situ (DCIS) has increased after implementation of mammographic screening. The lesion represents management challenges due to its undetermined growth pattern. We aimed to explore treatment of women aged 48-71 diagnosed with DCIS between 1995 and 2018, by detection mode and histopathological characteristics. Material and methods: Data on surgical ...
    • Validation of repeated self-reported n-3 PUFA intake using serum phospholipid fatty acids as a biomarker in breast cancer patients during treatment 11 Medical and Health Sciences 1112 Oncology and Carcinogenesis 

      Brunvoll, Sonja Hjellegjerde; Thune, Inger; Frydenberg, Hanne; Flote, Vidar Gordon; Bertheussen, Gro Falkener; Schlichting, Ellen; Bjerve, Kristian S; Hjartåker, Anette (Journal article; Tidsskriftartikkel; Peer reviewed, 2018)
      <p><i>Background</i>: The role of n-3 polyunsaturated fatty acids (PUFAs) in breast cancer is not clear and under debate. To explore this relationship it is important to have proper validated dietary assessment methods for measuring the intake of n-3 PUFAs. The aim of the current study is to validate two different methods used to assess the intake of selected n-3 PUFAs as well as food sources of ...