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Quality of up to 35 years old archival breast cancer tissue in paraffinblocks for estrogen receptor evaluation
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- Ehinger, Anna (author)
- Lund University,Lunds universitet,Bröstcancer-genetik,Sektion I,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Individuell Bröstcancerbehandling,Forskargrupper vid Lunds universitet,Breastcancer-genetics,Section I,Department of Clinical Sciences, Lund,Faculty of Medicine,Personalized Breast Cancer Treatment,Lund University Research Groups
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- Rydén, Lisa (author)
- Lund University,Lunds universitet,Kirurgi, Lund,Sektion V,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Bröstcancer-genetik,Sektion I,Institutionen för kliniska vetenskaper, Lund,Bröstcancerkirurgi,Forskargrupper vid Lunds universitet,The Liquid Biopsy och Tumörprogression i Bröstcancer,Surgery (Lund),Section V,Department of Clinical Sciences, Lund,Faculty of Medicine,Breastcancer-genetics,Section I,Department of Clinical Sciences, Lund,Breast Cancer Surgery,Lund University Research Groups,The Liquid Biopsy and Tumor Progression in Breast Cancer
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- Bendahl, Pär-Ola (author)
- Lund University,Lunds universitet,Bröstcancer-genetik,Sektion I,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Individuell Bröstcancerbehandling,Forskargrupper vid Lunds universitet,The Liquid Biopsy och Tumörprogression i Bröstcancer,Breastcancer-genetics,Section I,Department of Clinical Sciences, Lund,Faculty of Medicine,Personalized Breast Cancer Treatment,Lund University Research Groups,The Liquid Biopsy and Tumor Progression in Breast Cancer
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- (creator_code:org_t)
- 2017-08-23
- 2017
- English 1 s.
- In: Virchows Archiv. - : Springer Science and Business Media LLC. - 1432-2307 .- 0945-6317. ; 471:Suppl. 1, s. 54-54
- Conference paper (peer-reviewed)
Abstract
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- Objective: Estrogen receptor (ER) positive breast cancer (BC) can havean insidious course with disease-relapse decades after primary surgery.New analysis performed on archived formalin-fixed paraffin-embedded(FFPE) tissue are important for disease-management in late BC-relapseand an important tool in BC-research. However, although loss of immunoreactivityin tissue slides after sectioning has been shown, little isknown of the preservation of biomarker-expression in FFPE tumourblocks.We aim to investigate the quality of immunohistochemical(IHC) ER-evaluation in FFPE-tissue over time (1978–2000).Method: Tissue-microarrays from a Swedish multicenter cohort of 728patients with contralateral BC was used for ER IHC-evaluation. BC wasstudied in three periods (1958–1985, 1986–1993, 1994–2000), and retrospectiveER IHC-data was correlated to corresponding prospective ERcytosol-analysis performed on fresh BC-tissue.Results: The concordance between the original ER cytosol-analysis andthe new IHC was substantial (1978–1985: 82 %, (117/142), Kappa 0.52.1986–1993: 91 %, (194/213), Kappa 0.72. 1994–2000: 86 %, (187/218),Kappa 0.61). Discrepancies were mostly found for tumours with ERvaluesclose to cutoff for one or both of the methods.Conclusion: FFPE BC-tissue from the late 70s to millennium showspreserved ER-antigenicity up to 35 years later.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Cancer och onkologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Cancer and Oncology (hsv//eng)
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- Ehinger, Anna
- Rydén, Lisa
- Bendahl, Pär-Ola
- Fernö, Mårten
- Alkner, Sara
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