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Simultaneous over activation of EGFR, telomerase (h TERT), and cyclin D1 correlates with advanced disease in larynx squamous cell carcinoma: a tissue microarray analysis

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Abstract

Overexpression of Epidermal Growth Factor Receptor (EGFR) and also of cell cycle control proteins, such as cyclin D1 is a frequent event in squamous cell carcinoma of the larynx (LSSC). Our aim was to correlate their protein levels with telomerase catalytic subunit (h-TERT) expression. Using tissue microarray technology, fifty-five paraffin embedded histologically confirmed primary LSSCs and also ten dysplastic lesions were cored at a diameter of 1.5 mm. Immunohistochemistry (IHC) was performed by the use of anti-EGFR, anti-cyclin D1, and anti-h TERT monoclonal antibodies. Chromogenic in situ hybridization (CISH) analysis was also applied using EGFR gene and chromosome 7 probes, respectively. EGFR, cyclin D1 and h-TERT protein overexpression was observed in 48/55 (87.2%), 19/55 (34.5%) and 21/55 (38.1%) carcinoma cases, respectively. EGFR protein expression was statistically associated with grade (P = 0.01), and also with stage (P = 0.001) of the examined tumors. Borderline statistical significance was assessed correlating overall cyclin D1 expression to h TERT expression (P = 0.06). Simultaneous up regulation of the three proteins was established in 7/55 (12.7%) cases, correlated to the stage of the tumors (P = 0.05). EGFR gene amplification was observed in 7/65 (10.7%) carcinomas and dysplasias, whereas chromosome 7 aneuploidy was detected in 4/65 (6.1%) of those cases.Simultaneous up regulation of EGFR, cyclin D1 and h TERT proteins correlates with advanced stage in LSCC. EGFR gene amplification and not only protein over expression maybe is the eligible criterion for targeted therapeutic strategies in those patients.

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Authors and Affiliations

  1. ENT Department, Hippokrateion Hospital, Filotheis 37, N.Iraklio, Athens, Greece

    Aristeidis Chrysovergis & Ioannis Giotakis

  2. Department of Histology & Embryology, Medical School, National and Kapodistrian University, Athens, Greece

    Vasilios G. Gorgoulis, Christos Kittas & Aspasia Kyroudi

  3. Department of Cytopathology, 417 NIMTS Hospital, Athens, Greece

    Evangelos Tsiambas

  4. Departmentof Pathology, 417 NIMTS Hospital, Athens, Greece

    Andreas Karameris

Authors
  1. Aristeidis Chrysovergis
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  2. Vasilios G. Gorgoulis
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  3. Ioannis Giotakis
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  4. Evangelos Tsiambas
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  5. Andreas Karameris
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  6. Christos Kittas
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  7. Aspasia Kyroudi
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Correspondence to Aristeidis Chrysovergis.

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Chrysovergis, A., Gorgoulis, V.G., Giotakis, I. et al. Simultaneous over activation of EGFR, telomerase (h TERT), and cyclin D1 correlates with advanced disease in larynx squamous cell carcinoma: a tissue microarray analysis. Med Oncol 28, 871–877 (2011). https://doi.org/10.1007/s12032-010-9522-3

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  • DOI: https://doi.org/10.1007/s12032-010-9522-3

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