Abstract | BACKGROUND: METHODS: The aim of this study was to investigate the prognostic value of proteins in the EGFR pathway in HNSCC. For this purpose, we collected surgically resected tissue of 140 locally advanced head and neck cancer patients, all treated with surgery and postoperative radiotherapy. RESULTS: In a multivariate analysis, expression of the phosphatase and tensin homologue deleted on chromosome 10 (PTEN) was significantly related to worse locoregional control (LRC; HR: 2.2, 95% CI: 1.1-4.6; P=0.03), independent of lymph node metastases (HR: 5.6, 95% CI: 1.2-27.4; P=0.03) and extranodal spread (HR: 2.7; 95% CI: 1.2-6.5; P=0.02). In vitro clonogenic radiosensitivity assays confirmed that overexpression of PTEN resulted in increased radioresistance. CONCLUSION: Our study is the first report showing that expression of PTEN mediates radiosensitivity in vitro and that increased expression in advanced HNSCC predicts worse LRC.
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Authors | W J Pattje, E Schuuring, M F Mastik, L Slagter-Menkema, M L Schrijvers, S Alessi, B F A M van der Laan, J L N Roodenburg, J A Langendijk, J E van der Wal |
Journal | British journal of cancer
(Br J Cancer)
Vol. 102
Issue 12
Pg. 1778-85
(Jun 08 2010)
ISSN: 1532-1827 [Electronic] England |
PMID | 20502457
(Publication Type: Evaluation Study, Journal Article)
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Chemical References |
- Biomarkers, Tumor
- EGFR protein, human
- ERBB2 protein, human
- ErbB Receptors
- Receptor, ErbB-2
- PTEN Phosphohydrolase
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Topics |
- Adult
- Aged
- Aged, 80 and over
- Biomarkers, Tumor
(metabolism)
- Carcinoma, Squamous Cell
(genetics, radiotherapy)
- Chromosomes, Human, Pair 10
- ErbB Receptors
(metabolism)
- Female
- Gene Deletion
- Head and Neck Neoplasms
(genetics, radiotherapy)
- Humans
- Lymphatic Metastasis
- Male
- Middle Aged
- PTEN Phosphohydrolase
(genetics)
- Prognosis
- Radiation Tolerance
(genetics)
- Receptor, ErbB-2
(metabolism)
- Signal Transduction
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