Now showing items 1-10 of 10

  • Adjuvant treatment: the contribution of expression microarrays 

    Lønning, Per Eystein; Chrisanthar, Ranjan; Staalesen, Vidar; Knappskog, Stian; Lillehaug, Johan (BioMed Central, 2007-12-20)
    Journal articlePeer reviewed
  • Alterations of the retinoblastoma gene in metastatic breast cancer 

    Berge, Elisabet Ognedal; Knappskog, Stian; Lillehaug, Johan; Lønning, Per Eystein (Springer, 2011-01-21)
    Germline mutations affecting the retinoblastoma gene (RB1) predispose to inherited retinoblastomas but also other malignancies, including breast cancer. While somatic RB1 mutations have been detected in different malignancies, ...
    Peer reviewedJournal article
  • CHEK2 Mutations Affecting Kinase Activity Together With Mutations in TP53 Indicate a Functional Pathway Associated with Resistance to Epirubicin in Primary Breast Cancer 

    Chrisanthar, Ranjan; Knappskog, Stian; Løkkevik, Erik; Anker, Gun Birgitta; Østenstad, Bjørn; Lundgren, Steinar; Berge, Elisabet Ognedal; Risberg, Terje; Mjaaland, Ingvil; Mæhle, Lovise; Engebretsen, Lars Fredrik; Lillehaug, Johan; Lønning, Per Eystein (Public Library of Science, 2008-08-26)
    Background: Chemoresistance is the main obstacle to cure in most malignant diseases. Anthracyclines are among the main drugs used for breast cancer therapy and in many other malignant conditions. Single parameter analysis ...
    Journal articlePeer reviewed
  • Effect of the MDM2 promoter polymorphisms SNP309T>G and SNP285G>C on the risk of ovarian cancer in BRCA1 mutation carriers 

    Bjørnslett, Merete; Knappskog, Stian; Lønning, Per Eystein; Dørum, Anne (BioMed Central, 2012-10-05)
    Background: While BRCA mutation carriers possess a 20-40% lifetime risk of developing ovarian cancer, knowledge about genetic modifying factors influencing the phenotypic expression remains obscure. We explored the ...
    Peer reviewedJournal article
  • Identification and characterization of retinoblastoma gene mutations disturbing apoptosis in human breast cancers 

    Berge, Elisabet Ognedal; Knappskog, Stian; Geisler, Stephanie; Staalesen, Vidar; Pacal, Marec; Børresen-Dale, Anne-Lise; Puntervoll, Pål; Lillehaug, Johan; Lønning, Per Eystein (BioMed Central, 2010-07-01)
    Background The tumor suppressor pRb plays a key role regulating cell cycle arrest, and disturbances in the RB1 gene have been reported in different cancer forms. However, the literature reports contradictory findings with ...
    Peer reviewedJournal article
  • Low expression levels of ATM may substitute for CHEK2 / TP53 mutations predicting resistance towards anthracycline and mitomycin chemotherapy in breast cancer 

    Knappskog, Stian; Chrisanthar, Ranjan; Løkkevik, Erik; Anker, Gun Birgitta; Østenstad, Bjørn; Lundgren, Steinar; Risberg, Terje; Mjaaland, Ingvil; Leirvaag, Beryl; Miletic, Hrvoje; Lønning, Per Eystein (BioMed Central, 2012-03-15)
    Introduction: Mutations affecting p53 or its upstream activator Chk2 are associated with resistance to DNAdamaging chemotherapy in breast cancer. ATM (Ataxia Telangiectasia Mutated protein) is the key activator of p53 and ...
    Journal article
  • MDM2 Promoter SNP344T>A (rs1196333) Status Does Not Affect Cancer Risk 

    Knappskog, Stian; Gansmo, Liv B.; Romundstad, Pål; Bjørnslett, Merete; Trovik, Jone; Lønning, Per Eystein; Salvesen, Helga B. (Public Library of Science, 2012-04-30)
    The MDM2 proto-oncogene plays a key role in central cellular processes like growth control and apoptosis, and the gene locus is frequently amplified in sarcomas. Two polymorphisms located in the MDM2 promoter P2 have been ...
    Peer reviewedJournal article
  • Population distribution and ancestry of the cancer protective MDM2 SNP285 (rs117039649) 

    Knappskog, Stian; Gansmo, Liv Beathe; Dibirova, Khadizha; Metspalu, Andres; Cybulski, Cezary; Peterlongo, Paolo; Aaltonen, Lauri; Vatten, Lars Johan; Romundstad, Pål Richard; Hveem, Kristian; Devilee, Peter; Evans, Gareth D; Lin, Dongxin; Van Camp, Guy; Manolopoulos, Vangelis G; Osorio, Ana; Milani, Lili; Ozcelik, Tayfun; Zalloua, Pierre; Mouzaya, Francis; Bliznetz, Elena; Balanovska, Elena; Pocheshkova, Elvira; Kucinskas, Vaidutis; Atramentova, Lubov; Nymadawa, Pagbajabyn; Titov, Konstantin; Lavryashina, Maria; Yusupov, Yuldash; Bogdanova, Natalia; Koshel, Sergey; Zamora, Jorge; Wedge, David C.; Charlesworth, Deborah; Dörk, Thilo; Balanovsky, Oleg; Lønning, Per Eystein (Impact Journals, 2014-04-18)
    The MDM2 promoter SNP285C is located on the SNP309G allele. While SNP309G enhances Sp1 transcription factor binding and MDM2 transcription, SNP285C antagonizes Sp1 binding and reduces the risk of breast-, ovary- and ...
    Journal article
  • 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; Fjösne, Hans E.; Nysted, Arne; Lillehaug, Johan; Lønning, Per Eystein (Public Library of Science, 2011-04-27)
    Background: 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 ...
    Peer reviewedJournal article
  • TP53 status predicts long-term survival in locally advanced breast cancer after primary chemotherapy 

    Eikesdal, Hans Petter; Knappskog, Stian; Aas, Turid; Lønning, Per Eystein (Informa Healthcare, 2014-10)
    Background: Before the advent of neoadjuvant chemotherapy, radiotherapy and surgery alone were associated with a high risk of uncontrolled locoregional relapses in locally advanced breast cancer (LABC).Material and methods: ...
    Journal article