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Sökning: onr:"swepub:oai:lup.lub.lu.se:53537312-c43d-41dd-a0ae-440ec826a0ca" > Combination of the ...

Combination of the proliferation marker cyclin A, histological grade, and estrogen receptor status in a new variable with high prognostic impact in breast cancer.

Forsare, Carina, (författare)
Lunds universitet, Lund University, Medicinska fakulteten, Faculty of Medicine, Institutionen för kliniska vetenskaper, Lund, Department of Clinical Sciences, Lund, Bröstca-genetik, Breastca-genetics, Sektion I, Section I
Ahlin, Cecilia (författare)
Bendahl, Pär-Ola, (författare)
Lunds universitet, Lund University, Medicinska fakulteten, Faculty of Medicine, Institutionen för kliniska vetenskaper, Lund, Department of Clinical Sciences, Lund, Bröstca-genetik, Breastca-genetics, Sektion I, Section I
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Fjällskog, Marie-Louise (författare)
Hedenfalk, Ingrid, (författare)
Lunds universitet, Lund University, Medicinska fakulteten, Faculty of Medicine, Institutionen för kliniska vetenskaper, Lund, Department of Clinical Sciences, Lund, Bröstca-genetik, Breastca-genetics, Sektion I, Section I
Malmström, Per, (författare)
Lunds universitet, Lund University, Medicinska fakulteten, Faculty of Medicine, Institutionen för kliniska vetenskaper, Lund, Department of Clinical Sciences, Lund, Bröstca-genetik, Breastca-genetics, Sektion I, Section I
Fernö, Mårten, (författare)
Lunds universitet, Lund University, Medicinska fakulteten, Faculty of Medicine, Institutionen för kliniska vetenskaper, Lund, Department of Clinical Sciences, Lund, Bröstca-genetik, Breastca-genetics, Sektion I, Section I
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2012
Engelska.
Ingår i: Breast Cancer Research and Treatment. - Springer. - 1573-7217. ; 131, s. 33-40
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  • Global gene expression profiles, consisting mainly of genes associated with proliferation, have been shown to subdivide histological grade 2 breast cancers into groups with different prognosis. We raised the question whether this subdivision could be done using a single proliferation marker, cyclin A. Furthermore, we combined cyclin A (CA), histological grade (G), and estrogen receptor-ER (E) into a new variable, CAGE. Our aim was to investigate not only the prognostic importance of cyclin A alone but also the value of the combination variable CAGE. In 219 premenopausal node-negative patients, cyclin A was assessed using immunohistochemistry on tissue microarrays. High cyclin A was defined as above the seventh decile of positive cells. Only 13% of the patients received adjuvant systemic therapy. Cox proportional hazards regression was used to model the impact of the factors on distant disease-free survival (DDFS). Cyclin A divided histological grade 2 tumors into two groups with significantly different DDFS (hazard ratio [HR]: 15, P < 0.001). When stratifying for ER status, cyclin A was a prognostic factor only in the ER positive subgroup. We found that CAGE was an independent prognostic factor for DDFS in multivariate analysis (HR: 4.1, P = 0.002), together with HER2. CAGE and HER2 identified 53% as low-risk patients with a 5-year DDFS of 95%. A new prognostic variable was created by combining cyclin A, histological grade, and ER (CAGE). CAGE together with HER2 identified a large low-risk group for whom adjuvant chemotherapy will have limited efficacy and may be avoided.

Ämnesord

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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