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Sökning: WFRF:(Krawiec Kamilla)

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1.
  • Eriksson, Hanna, et al. (författare)
  • Interobserver Variability of Histopathological Prognostic Parameters in Cutaneous Malignant Melanoma : Impact on Patient Management
  • 2013
  • Ingår i: Acta Dermato-Venereologica. - : Medical Journals Sweden AB. - 0001-5555 .- 1651-2057. ; 93:4, s. 411-416
  • Tidskriftsartikel (refereegranskat)abstract
    • Clinical management of primary cutaneous melanomas is based on histopathological staging of the tumour. The aim of this study was to investigate, in a non-selected population in clinical practice, the agreement rate between general pathologists and pathologists experienced in melanoma in terms of the evaluation of histopathological prognostic parameters in cutaneous malignant melanomas, and to what extent the putative variability affected clinical management. A total of 234 cases of invasive cutaneous malignant melanoma were included in the study from the Stockholm-Gotland Healthcare Region in Sweden. Overall interobserver variability between a general pathologist and an expert review was 68.8-84.8%. Approximately 15.5% of melanomas <= 1 mm were re-classified either as melanoma in situ or melanomas >1 mm after review. In conclusion, review by a pathologist experienced in melanoma resulted in a change in recommendations about surgical excision margins and/or sentinel node biopsy in subgroups of Ti melanomas.
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2.
  • Johansson, Henrik J., et al. (författare)
  • Retinoic acid receptor alpha is associated with tamoxifen resistance in breast cancer
  • 2013
  • Ingår i: Nature Communications. - : Nature Publishing Group: Nature Communications. - 2041-1723. ; 4:3175
  • Tidskriftsartikel (refereegranskat)abstract
    • About one-third of oestrogen receptor alpha-positive breast cancer patients treated with tamoxifen relapse. Here we identify the nuclear receptor retinoic acid receptor alpha as a marker of tamoxifen resistance. Using quantitative mass spectrometry-based proteomics, we show that retinoic acid receptor alpha protein networks and levels differ in a tamoxifen-sensitive (MCF7) and a tamoxifen-resistant (LCC2) cell line. High intratumoural retinoic acid receptor alpha protein levels also correlate with reduced relapse-free survival in oestrogen receptor alpha-positive breast cancer patients treated with adjuvant tamoxifen solely. A similar retinoic acid receptor alpha expression pattern is seen in a comparable independent patient cohort. An oestrogen receptor alpha and retinoic acid receptor alpha ligand screening reveals that tamoxifen-resistant LCC2 cells have increased sensitivity to retinoic acid receptor alpha ligands and are less sensitive to oestrogen receptor alpha ligands compared with MCF7 cells. Our data indicate that retinoic acid receptor alpha may be a novel therapeutic target and a predictive factor for oestrogen receptor alpha-positive breast cancer patients treated with adjuvant tamoxifen.
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