Expression of amphiregulin and EGFRvIII affect outcome of patients with squamous cell carcinoma of the head and neck receiving cetuximab-docetaxel treatment
Purpose: Constitutive activation of epidermal growth factor receptor (EGFR) as a result of gene amplification, mutation, or overexpression of its ligands has been associated with response to EGFR targeting strategies. The role of these molecular mechanisms for the responsiveness of squamous cell car...
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| Main Authors: | , , , , , , , |
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| Format: | Article (Journal) |
| Language: | English |
| Published: |
July 31 2011
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| In: |
Clinical cancer research
Year: 2011, Volume: 17, Issue: 15, Pages: 5197-5204 |
| ISSN: | 1557-3265 |
| DOI: | 10.1158/1078-0432.CCR-10-3338 |
| Online Access: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1158/1078-0432.CCR-10-3338
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| Author Notes: | Ingeborg Tinhofer, Konrad Klinghammer, Wilko Weichert, Maren Knödler, Albrecht Stenzinger, Thomas Gauler, Volker Budach, and Ulrich Keilholz |
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| 245 | 1 | 0 | |a Expression of amphiregulin and EGFRvIII affect outcome of patients with squamous cell carcinoma of the head and neck receiving cetuximab-docetaxel treatment |c Ingeborg Tinhofer, Konrad Klinghammer, Wilko Weichert, Maren Knödler, Albrecht Stenzinger, Thomas Gauler, Volker Budach, and Ulrich Keilholz |
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| 520 | |a Purpose: Constitutive activation of epidermal growth factor receptor (EGFR) as a result of gene amplification, mutation, or overexpression of its ligands has been associated with response to EGFR targeting strategies. The role of these molecular mechanisms for the responsiveness of squamous cell carcinoma of the head and neck (SCCHN) to cetuximab-containing regimens remains unknown.Experimental Design: Tumor biopsies from 47 patients, enrolled in a single-arm phase II multicenter study for second-line treatment of recurrent or metastatic SCCHN with cetuximab and docetaxel, were analyzed by immunohistochemistry for expression of EGFR, its deletion variant III (EGFRvIII) and its ligand amphiregulin (AREG). The relation between expression levels and disease control rate (DCR) was evaluated by logistic regression. Association between expression levels, progression-free survival (PFS), and overall survival (OS) was determined by Kaplan-Meier analysis, log-rank test, and uni- and multivariate Cox regression analysis.Results: High expression of EGFR, EGFRvIII, and AREG was detected in 73%, 17%, and 45% of SCCHN cases, respectively. Expression levels of EGFR had no impact on PFS or OS. High expression levels of EGFRvIII were significantly associated with reduced DCR and shortened PFS (HR: 3.3, P = 0.005) but not with OS. Patients with high AREG expression in tumor cells had significantly shortened OS (HR: 2.2, P = 0.002) and PFS (HR 2.2, P = 0.019) compared with patients with low expression score. Multivariate Cox analysis revealed an independent association of AREG and EGFRvIII with PFS but only AREG was an independent prognosticator of OS.Conclusions: High EGFRvIII and AREG expression levels identify SCCHN patients who are less likely to benefit from combination treatment with cetuximab and docetaxel. Clin Cancer Res; 17(15); 5197-204. ©2011 AACR. | ||
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| 700 | 1 | |a Stenzinger, Albrecht |e VerfasserIn |0 (DE-588)139606106 |0 (DE-627)703395238 |0 (DE-576)312432755 |4 aut | |
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| 700 | 1 | |a Keilholz, Ulrich |e VerfasserIn |4 aut | |
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