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Molecular findings of nasopharyngeal carcinoma in a European population.
Analytical and Quantitative Cytology and Histology 2011 December
OBJECTIVE: To explore biomolecular characteristics of a group of patients with nasopharyngeal carcinoma from European (Spanish) hospitals, addressing the pathogenesis of the tumor and the response to treatment.
STUDY DESIGN: Cyclin D1 and p16 expression were evaluated immunohistochemically in 33 tissue samples of nasopharyngeal carcinoma. CCDN1 gene amplification and p16 gene deletion were studied by fluorescence in situ hybridization. Patient clinical data were examined, and tissues were evaluated histologically using hematoxylin-eosin staining.
RESULTS: Cyclin D1 overexpression was found in 19 cases, and p16 expression was undetected in 30 cases. An association was observed between impaired p16 expression and cyclin D1 overexpression (p = 0.034). Eleven patients displayed p16 gene deletion and CCDN1 gene amplification.
CONCLUSION: Cyclin D1 overexpression and CCDN1 amplification, loss of p16 expression and p16 deletion may be among the genetic alterations involved in the pathogenesis of nasopharyngeal carcinoma.
STUDY DESIGN: Cyclin D1 and p16 expression were evaluated immunohistochemically in 33 tissue samples of nasopharyngeal carcinoma. CCDN1 gene amplification and p16 gene deletion were studied by fluorescence in situ hybridization. Patient clinical data were examined, and tissues were evaluated histologically using hematoxylin-eosin staining.
RESULTS: Cyclin D1 overexpression was found in 19 cases, and p16 expression was undetected in 30 cases. An association was observed between impaired p16 expression and cyclin D1 overexpression (p = 0.034). Eleven patients displayed p16 gene deletion and CCDN1 gene amplification.
CONCLUSION: Cyclin D1 overexpression and CCDN1 amplification, loss of p16 expression and p16 deletion may be among the genetic alterations involved in the pathogenesis of nasopharyngeal carcinoma.
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