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Erschienen in: Breast Cancer Research and Treatment 1/2012

01.07.2012 | Clinical Trial

The fibroblast growth factor receptor 1 (FGFR1), a marker of response to chemoradiotherapy in breast cancer?

verfasst von: Carole Massabeau, Brigitte Sigal-Zafrani, Lisa Belin, Alexia Savignoni, Marion Richardson, Youlia M. Kirova, Elizabeth Cohen-Jonathan-Moyal, Frédérique Mégnin-Chanet, Janet Hall, Alain Fourquet

Erschienen in: Breast Cancer Research and Treatment | Ausgabe 1/2012

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Abstract

The goal of the present study was to evaluate the role of the tyrosine kinase receptor fibroblast growth factor-1 (FGFR1) and its ligand, the fibroblast growth factor 2 (FGF2) in determining the response to chemoradiotherapy of breast cancers. S14 was a phase II neoadjuvant study carried out at the Institut Curie that recruited 59 patients between November 2001 and September 2003. This prospective study aimed to assess the pathological response after preoperative radiochemotherapy (5FU–Navelbine-radiotherapy) for large breast cancers. The expression of FGFR1 and FGF2 in tumor cells were assessed by immunohistochemistry. Tumors in which no staining was seen, were considered as negative for that protein. We used the Khi-2 test or the Fisher test to compare the qualitative variables and the Student t test or the non-parametric Wilcoxon test for the quantitative variables. We included in the present study all the 32 patients from the S14 cohort for whom the tissue blocks from the biopsy specimens were available with sufficient tumoral tissue. FGFR1 and FGF2 staining were observed respectively in 17 (56 %) and 22 (68 %) of the 32 tumoral biopsies. The expression of FGFR1 was associated with the hormone receptor positive status (p = 0.0191). Only 11 % (1/9) of the high grade tumors failed to respond to chemoradiotherapy compared to 68 % resistant tumors (15/22) among the low/intermediate grade tumors (p = 0.0199). Among the low/intermediate grade tumors, FGFR1 negative tumors did not respond to chemoradiotherapy (0/9), compared with tumors expressing FGFR1 among which, almost one half had a good response (6/13) (p = 0.0167). Among the low and intermediate grade breast cancers, the FGFR1 negative tumors were resistant to chemoradiotherapy. The expression of FGFR1 in patients’ biopsies may serve as a marker of response to chemoradiotherapy.
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Metadaten
Titel
The fibroblast growth factor receptor 1 (FGFR1), a marker of response to chemoradiotherapy in breast cancer?
verfasst von
Carole Massabeau
Brigitte Sigal-Zafrani
Lisa Belin
Alexia Savignoni
Marion Richardson
Youlia M. Kirova
Elizabeth Cohen-Jonathan-Moyal
Frédérique Mégnin-Chanet
Janet Hall
Alain Fourquet
Publikationsdatum
01.07.2012
Verlag
Springer US
Erschienen in
Breast Cancer Research and Treatment / Ausgabe 1/2012
Print ISSN: 0167-6806
Elektronische ISSN: 1573-7217
DOI
https://doi.org/10.1007/s10549-012-2027-3

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