Prognostic significance of c-erbB-2 oncoprotein expression in intestinal-type adenocarcinoma of the sinonasal tract

Autor: Gennaro Cilento, S. Boccuzzi, Carmelo Urso, Vieri Boddi, Oreste Gallo, Isabelle Fini-Storchi, Alessandro Franchi
Rok vydání: 1998
Předmět:
Zdroj: Università degli studi di Firenze-IRIS
ISSN: 1097-0347
1043-3074
Popis: BACKGROUND The c-erbB-2 gene codes for a putative transmembrane protein, similar in structure to the epidermal growth factor receptor. Amplification and/or overexpression of the gene has been recently described with a prognostic significance in a variety of human adenocarcinomas. METHODS A monoclonal antibody against the c-erbB-2 oncoprotein has been used immunocytochemically in a retrospective study of formalin-fixed, paraffin-embedded samples from 28 consecutive intestinal-type adenocarcinomas (ITACs) of the nose and paranasal sinuses. RESULTS Nine out of 28 primary adenocarcinomas (32%) showed positive staining. Clinical follow-up data, available for all patients, suggested in a univariate analysis a correlation between c-erbB-2 expression and poor prognosis, as measured by 5-year disease-free (p = .02) and overall survival curves (p = .07) as well as by recurrence of disease and the appearance of regional and distant metastases (p = .08). In multivariate analysis, c-erbB-2 expression was statistically significant in terms of disease-free survival (p = .046) but not of overall survival (p = .091) in our series. CONCLUSIONS These data indicate that c-erbB-2 oncogene activation could be involved in sinonasal tract oncogenesis, with possible prognostic implications.
Databáze: OpenAIRE
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