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01.02.2012 | Preclinical Study

FOXA1 is an independent prognostic marker for ER-positive breast cancer

Erschienen in: Breast Cancer Research and Treatment | Ausgabe 3/2012

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Abstract

Forkhead box protein A1 (FOXA1) is a “pioneer factor” that plays a role in controlling nearly 50% of estrogen receptor target genes. FOXA1 expression correlates with estrogen receptor (ER)-positivity especially in luminal subtype A breast cancers. The aim of this study was to investigate the precise role of FOXA1 in breast cancer using a large population-based cohort. Nuclear expression of FOXA1 was analyzed in a tissue microarray of 4,444 invasive breast cancer cases using immunohistochemistry and correlated with clinicopathologic variables using previously described methods and cutoff points. The entire cohort was equally divided into a training and validation set. All survival analyses were performed using a previously defined cutoff (3) for validation. Additional X-tile analysis performed to analyze prognostic effects of low and high FOXA1 levels identified 24 as a cutoff. Bonferroni–Holmes test was used as appropriate. FOXA1 expression significantly correlated positively with markers of good prognosis or ER-positivity, and negatively with tumor size, tumor grade, nodal status, Ki67, HER2 expression, and basal subtype (each P value <0.0001). In both survival analyses, FOXA1 was a significant predictor of breast cancer-specific survival (P < 0.0001) and relapse-free survival (P < 0.0001). FOXA1 was also an independent predictor of breast cancer-specific survival at 10 years using both cutoffs. Among the ER-positive subgroup treated with tamoxifen, FOXA1 was an independent prognostic marker using the 24 cutoff (P = 0.030). FOXA1 is a significant marker of good prognosis in breast cancer; it also identifies a subset of ER-positive tamoxifen treated patients at low risk of recurrence.

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Titel: FOXA1 is an independent prognostic marker for ER-positive breast cancer
Publikationsdatum: 01.02.2012
Erschienen in: Breast Cancer Research and Treatment / Ausgabe 3/2012
Print ISSN: 0167-6806
Elektronische ISSN: 1573-7217
DOI: https://doi.org/10.1007/s10549-011-1482-6

Neu im Fachgebiet Onkologie

18.04.2024 | Wirbelsäulenmetastase | Nachrichten

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Springer Medizin

FOXA1 is an independent prognostic marker for ER-positive breast cancer

Abstract

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Stereotaktische Radiatio schlägt konventionelle Bestrahlung

Adjuvante Brustkrebstherapie: Doppelt hält besser

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Live-Webinar: Aktuelle Leitlinien bei Herz-Kreislauf-Erkrankungen

Springer Medizin

Abstract

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Neu im Fachgebiet Onkologie

Stereotaktische Radiatio schlägt konventionelle Bestrahlung

Adjuvante Brustkrebstherapie: Doppelt hält besser

Manche Gestagene können das Risiko für Meningeome erhöhen

Einladung zum PSA-Screening senkt die Krebssterblichkeit

Update Onkologie