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Oestrogen receptor status, treatment and breast cancer prognosis in Icelandic BRCA2 mutation carriers.

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Authors
Jonasson, Jon G
Stefansson, Olafur A
Johannsson, Oskar T
Sigurdsson, Helgi
Agnarsson, Bjarni A
Olafsdottir, Gudridur H
Alexiusdottir, Kristin K
Stefansdottir, Hrefna
Munoz Mitev, Rodrigo
Olafsdottir, Katrin
Olafsdottir, Kristrun
Arason, Adalgeir
Stefansdottir, Vigdis
Olafsdottir, Elinborg J
Barkardottir, Rosa B
Eyfjord, Jorunn E
Narod, Steven A
Tryggvadóttir, Laufey
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Issue Date
2016-09-27

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Citation
Oestrogen receptor status, treatment and breast cancer prognosis in Icelandic BRCA2 mutation carriers. 2016, 115 (7):776-83 Br. J. Cancer
Abstract
The impact of an inherited BRCA2 mutation on the prognosis of women with breast cancer has not been well documented. We studied the effects of oestrogen receptor (ER) status, other prognostic factors and treatments on survival in a large cohort of BRCA2 mutation carriers.
We identified 285 breast cancer patients with a 999del5 BRCA2 mutation and matched them with 570 non-carrier patients. Clinical information was abstracted from patient charts and pathology records and supplemented by evaluation of tumour grade and ER status using archived tissue specimens. Univariate and multivariate hazard ratios (HR) were estimated for breast cancer-specific survival using Cox regression. The effects of various therapies were studied in patients treated from 1980 to 2012.
Among mutation carriers, positive ER status was associated with higher risk of death than negative ER status (HR=1.94; 95% CI=1.22-3.07, P=0.005). The reverse association was seen for non-carriers (HR=0.71; 95% CI: 0.51-0.97; P=0.03).
Among BRCA2 carriers, ER-positive status is an adverse prognostic factor. BRCA2 carrier status should be known at the time when treatment decisions are made.
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To access publisher's full text version of this article click on the hyperlink at the bottom of the page
Additional Links
http://dx.doi.org/ 10.1038/bjc.2016.249
http://www.nature.com/bjc/journal/v115/n7/pdf/bjc2016249a.pdf
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closedAccess
ae974a485f413a2113503eed53cd6c53
10.1038/bjc.2016.249
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English Journal Articles (Peer Reviewed)

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