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- Loman, N., et al.
(författare)
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Nordic trip, a randomized phase 3 study in early triple negative breast cancer
- 2016
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Ingår i: Cancer Research. - Lund Univ, Skane Univ Hosp, Lund, Sweden. Sahlgrens Acad, Gothenburg, Sweden. Univ Hosp, Gothenburg, Sweden. Univ Helsinki, Cent Hosp, Helsinki, Finland. Univ Helsinki, Helsinki, Finland. Rigshosp, DBCG Secretariat, DK-2100 Copenhagen, Denmark. Univ Hosp, Landspitali, Reykjavik, Iceland. Akershus Univ Hosp, Lorenskog, Norway. Orebro Univ Hosp, Orebro, Sweden. Uppsala Univ, Akad Hosp, Uppsala, Sweden.. - 0008-5472 .- 1538-7445. ; 76
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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- Alkner, S., et al.
(författare)
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Prognostic and predictive importance of the estrogen receptor coactivator AIB1 in a randomized trial comparing adjuvant letrozole and tamoxifen therapy in postmenopausal breast cancer : the Danish cohort of BIG 1-98
- 2017
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Ingår i: Breast Cancer Research and Treatment. - : Springer Science and Business Media LLC. - 0167-6806 .- 1573-7217. ; 166, s. 481-490
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Tidskriftsartikel (refereegranskat)abstract
- Purpose: To evaluate the estrogen receptor coactivator amplified in breast cancer 1 (AIB1) as a prognostic marker, as well as a predictive marker for response to adjuvant tamoxifen and/or aromatase inhibitors, in early estrogen receptor-positive breast cancer. Method: AIB1 was analyzed with immunohistochemistry in tissue microarrays of the Danish subcohort (N = 1396) of the International Breast Cancer Study Group’s trial BIG 1-98 (randomization between adjuvant tamoxifen versus letrozole versus the sequence of the two drugs). Results: Forty-six percent of the tumors had a high AIB1 expression. In line with previous studies, AIB1 correlated to a more aggressive tumor-phenotype (HER2 amplification and a high malignancy grade). High AIB1 also correlated to higher estrogen receptor expression (80–100 vs. 1–79%), and ductal histological type. High AIB1 expression was associated with a poor disease-free survival (univariable: hazard ratio 1.35, 95% confidence interval 1.12–1.63. Multivariable: hazard ratio 1.29, 95% confidence interval 1.06–1.58) and overall survival (univariable: hazard ratio 1.34, 95% confidence interval 1.07–1.68. Multivariable: hazard ratio 1.25, 95% confidence interval 0.99–1.60). HER2 did not seem to modify the prognostic effect of AIB1. No difference in treatment effect between tamoxifen and letrozole in relation to AIB1 was found. Conclusions: In a subset of the large international randomized trial BIG 1-98, we confirm AIB1 to be a strong prognostic factor in early breast cancer. Hence, although tumor AIB1 expression does not seem to be useful for the choice of tamoxifen versus an aromatase inhibitor in postmenopausal endocrine-responsive breast cancer, AIB1 is an interesting target for new anti-cancer therapies and further investigations of this biomarker is warranted.
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- Boiesen, P, et al.
(författare)
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Histologic grading in breast cancer--reproducibility between seven pathologic departments. South Sweden Breast Cancer Group
- 2000
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Ingår i: Acta Oncologica. - : Informa UK Limited. - 1651-226X .- 0284-186X. ; 39:1, s. 41-45
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Tidskriftsartikel (refereegranskat)abstract
- Histologic grade, including tubular formations, nuclear grade, and mitotic activity, is a well-documented prognostic factor in breast cancer. In comparison with other prognostic parameters, the evaluation of histologic grade is cheap and can be performed, in principle, in all cases of breast cancer. One possible disadvantage is that the evaluation may vary between different pathological departments. The aim of the present work was therefore to study the reproducibility of the histologic grading system by distributing haematoxylin-erythrosin-stained slides from 93 invasive breast cancers to the seven pathology departments within the southern healthcare region of Sweden. The evaluation was performed blindly and without any knowledge of other clinical parameters. In 31% of the cases the same histologic grade was obtained for all departments. The overall mean kappa was 0.54, indicating a moderate reproducibility. Of the three factors included in histologic grade, the agreement was best for tubular formations and poorest for nuclear grade and mitotic activity. The overall moderate reproducibility should be considered when the clinical usefulness of histologic grading is compared with other prognostic instruments.
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