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> Landberg Göran
> Stål Olle 1952 >
HER2 status in horm...
HER2 status in hormone receptor positive premenopausal primary breast cancer adds prognostic, but not tamoxifen treatment predictive, information
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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,Surgery (Lund),Section V,Department of Clinical Sciences, Lund,Faculty of Medicine,Breastcancer-genetics,Section I,Department of Clinical Sciences, Lund,Department of Surgery, Institution of Clinical Sciences, Lund University, Sweden
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- Landberg, Göran (author)
- Lund University,Lunds universitet,Patologi, Malmö,Forskargrupper vid Lunds universitet,Pathology, Malmö,Lund University Research Groups,Division of Pathology, Institution of Laboratory Medicine, Malmö University Hospital, Sweden
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- Stål, Olle, 1952- (author)
- Linköpings universitet,Onkologi,Hälsouniversitetet
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- Nordenskjöld, Bo, 1940- (author)
- Linköpings universitet,Onkologi,Hälsouniversitetet
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- Fernö, Mårten (author)
- Lund University,Lunds universitet,Bröstcancer-genetik,Sektion I,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Breastcancer-genetics,Section I,Department of Clinical Sciences, Lund,Faculty of Medicine,Department of Oncology, Institition of Clinical Sciences, Lund University, Lund, Sweden
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- Bendahl, Pär-Ola (author)
- Lund University,Lunds universitet,Bröstcancer-genetik,Sektion I,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Breastcancer-genetics,Section I,Department of Clinical Sciences, Lund,Faculty of Medicine,Department of Oncology, Institition of Clinical Sciences, Lund University, Lund, Sweden
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(creator_code:org_t)
- 2007-07-18
- 2008
- English.
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In: Breast Cancer Research and Treatment. - : Springer Science and Business Media LLC. - 0167-6806 .- 1573-7217. ; 109:2, s. 351-357
- Related links:
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http://dx.doi.org/10...
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https://urn.kb.se/re...
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https://lup.lub.lu.s...
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Abstract
Subject headings
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- BackgroundOverexpression of human epidermal growth factor receptor 2 (HER2) or amplification of its gene is a prognostic factor in primary breast cancer and a predictor for tamoxifen treatment efficacy in oestrogen receptor (ER) positive disease. In the present study we explored a defined cohort of breast cancer patients included in a randomised trial in order to assess prognostic and tamoxifen treatment information yielded by HER2 status.MethodsPremenopausal breast cancer patients with stage II tumours (n = 564) were included and allocated to 2 years of adjuvant tamoxifen treatment versus no adjuvant treatment. ER, progesterone receptor (PR) status and HER2 status was determined by immunohistochemistry using a tissue microarray. HER2 amplification was analysed by fluorescent in situ hybridisation and tumours being amplified and/or HER2 3+ were considered HER2+. HER2 status was evaluable in 83% of the patients and 12.6% were HER2+. In untreated patients, HER2 was a negative prognostic factor in ER+ patients, HR 2.95; 95% CI: 1.61–5.38, p < 0.001, but not in ER- patients, HR 0.67; 95% CI: 0.28–1.61, p = 0.4, and a significant interaction between the two markers was found, p < 0.01. HER2 status was not related to tamoxifen treatment efficacy in ER+ patients (term of interaction p = 0.95). When stratifying for PR status, similar results were achieved.DiscussionHER2+ and ER+ breast cancer constituted a subgroup of tumours with poor prognosis in premenopausal breast cancer, whereas no treatment interaction was found between HER2 status and tamoxifen in ER+ tumours. The poor prognosis in HER2+ and ER+ patients may interfere with the interpretation of HER2 data in non-randomised trials of adjuvant tamoxifen.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Cancer och onkologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Cancer and Oncology (hsv//eng)
Keyword
- MEDICINE
- MEDICIN
Publication and Content Type
- ref (subject category)
- art (subject category)
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