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Cyclin E confers a prognostic value in premenopausal breast cancer patients with tumours exhibiting an infiltrative growth pattern
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2008 (engelsk)Inngår i: Journal of Clinical Pathology, ISSN 0021-9746, E-ISSN 1472-4146, Vol. 61, nr 2, s. 184-191Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Aims: To investigate the prognostic value of cyclin E in relation to tumour growth pattern by analysing stage II primary breast cancers from premenopausal women not subjected to any further adjuvant treatment. To analyse the value of cyclin E as a predictor of tamoxifen response, by comparing untreated and treated patients with oestrogen receptor positive tumours. Methods: Breast cancer samples, assembled in tissue microarrays, were immunohistochemically stained for cyclin E and evaluated regarding the presence of nuclear staining. The overall growth characteristics of each tumour were assessed using whole tissue sections. Results: Tumours displaying a pushing margin phenotype were strongly associated with high cyclin E levels, lymph node negative disease, a high histological grade and oestrogen receptor negativity, and exhibited a better prognosis compared to tumours with an infiltrative growth pattern. In the total cohort of non-treated patients (n = 187), cyclin E was not associated with recurrence free survival (RFS). However, when analysing the subgroup of tumours lacking a pushing growth pattern (n = 141), cyclin E was significantly associated with RFS, independent of histological grade and node status. There was no significant difference in tamoxifen response with regard to different cyclin E levels. Conclusion: The prognostic value of cyclin E in premenopausal breast cancer is limited to patients with breast carcinomas exhibiting an exclusively infiltrative growth pattern. This limitation could be explained by the presence of a small but distinct subgroup of cyclin E-high breast cancers with a pushing margin phenotype and a more favourable outcome.

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2008. Vol. 61, nr 2, s. 184-191
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URN: urn:nbn:se:liu:diva-44448DOI: 10.1136/jcp.2007.047688Lokal ID: 76652OAI: oai:DiVA.org:liu-44448DiVA, id: diva2:265310
Tilgjengelig fra: 2009-10-10 Laget: 2009-10-10 Sist oppdatert: 2017-12-13

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