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Multi-photon Imaging of Tumor Cell Invasion in an Orthotopic Mouse Model of Oral Squamous Cell Carcinoma
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[Immunohistochemistry study of EGFR expression in head and neck squamous cell carcinoma]
X Altuna Mariezkurrena1, J Algaba Guimerá, J Wang Rodríguez
1Servicio de Otorrinolaringología, Hospital Donostia, San Sebastián, España.
Abstract:
EGFR is an important transmembrane receptor member of the family of tyrosine kinases, that translates signals from both outside and inside the cell and plays a key role in numerous proceses that affect tumour development, growth, progresion, differentiation, inhibition of apoptosis and metastasis. Immunohistochemistry studies have shown that 40-80% of head and neck squamous cell carcinomas express EGFR and it has been suggested as a potential independent prognostic parameter. The objective of this study is to evaluate by immunohistochemistry the expresi6n of EGFR in a series of Head and Neck Squamous Cell Carcinoma and correlate it to clinico-pathological features and prognostic significance. We investigated expression of EGFR in 44 samples. There was a high expression in 41% of the cases. Even if we have not found that the expression of EGFR correlated with the prognosis of these patients the presence of EGFR is very important because there are chemical agents or drugs that can inhibit its activity.
Insights
Epidermal Growth Factor Receptor (EGFR) is highly expressed in many head and neck squamous cell carcinomas. While this study did not find a direct link to prognosis, EGFR
Area of Science:
- Oncology
- Molecular Biology
- Cell Signaling
Background:
- Epidermal Growth Factor Receptor (EGFR) is a transmembrane tyrosine kinase receptor involved in cell signaling.
- EGFR plays a critical role in tumor development, growth, metastasis, and apoptosis inhibition.
- High EGFR expression is observed in 40-80% of head and neck squamous cell carcinomas (HNSCC), suggesting its potential as a prognostic marker.
Purpose of the Study:
- To evaluate EGFR expression in HNSCC using immunohistochemistry.
- To correlate EGFR expression with clinico-pathological features and prognostic significance in HNSCC patients.
Main Methods:
- Immunohistochemistry was employed to assess EGFR expression.
- The study analyzed 44 samples of Head and Neck Squamous Cell Carcinoma.
Main Results:
- High EGFR expression was detected in 41% of the investigated HNSCC cases.
- No significant correlation was found between EGFR expression and patient prognosis in this series.
Conclusions:
- EGFR is frequently expressed in Head and Neck Squamous Cell Carcinoma.
- Despite the lack of direct prognostic correlation in this study, the presence of EGFR is clinically significant.
- Targeted therapies inhibiting EGFR activity represent a viable treatment strategy for HNSCC.
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