Browsing Bergen Open Research Archive by Author "Chrisanthar, Ranjan"
Now showing items 1-7 of 7
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Adjuvant treatment: the contribution of expression microarrays
Lønning, Per Eystein; Chrisanthar, Ranjan; Staalesen, Vidar; Knappskog, Stian; Lillehaug, Johan (Peer reviewed; Journal article, 2007-12-20) -
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 (Peer reviewed; Journal article, 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 ... -
Concomitant inactivation of the p53- and pRB- functional pathways predicts resistance to DNA damaging drugs in breast cancer in vivo
Knappskog, Stian; Berge, Elisabet Ognedal; Chrisanthar, Ranjan; Geisler, Stephanie; Staalesen, Vidar; Leirvaag, Beryl; Yndestad, Synnøve; de Faveri, Elise Norheim; Karlsen, Bård Ove; Wedge, David C.; Akslen, Lars A.; Lilleng, Peer Kåre; Løkkevik, Erik; Lundgren, Steinar; Østenstad, Bjørn; Risberg, Terje; Mjaaland, Ingvil; Aas, Turid; Lønning, Per Eystein (Peer reviewed; Journal article, 2015-10)Chemoresistance is the main obstacle to cancer cure. Contrasting studies focusing on single gene mutations, we hypothesize chemoresistance to be due to inactivation of key pathways affecting cellular mechanisms such as ... -
High PTEN gene expression is a negative prognostic marker in human primary breast cancers with preserved p53 function
Yndestad, Synnøve; Austreid, Eilin; Knappskog, Stian; Chrisanthar, Ranjan; Lilleng, Peer Kåre; Lønning, Per Eystein; Eikesdal, Hans Petter (Peer reviewed; Journal article, 2017)Purpose: PTEN is an important tumor suppressor in breast cancer. Here, we examined the prognostic and predictive value of PTEN and PTEN pseudogene (PTENP1) gene expression in patients with locally advanced breast cancer ... -
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 (Peer reviewed; Journal article, 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 ... -
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 (Peer reviewed; Journal article, 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 ... -
Resistance to Chemotherapy in Breast Cancer: Potential role of p21B, p27 and the p53 apoptotic pathway
Chrisanthar, Ranjan (Doctoral thesis, 2009-03-13)