Immunohistochemical Expression of the Tumor Suppressor Protein p16 INK4a in Cervical Adenocarcinoma
ABSTRACT Objective: To evaluate the diagnostic utility of the p16ink4a protein expression as a marker for adenocarcinoma of the cervix. Methods: In a cross-sectional study, p16ink4a expression was evaluated in 30 cervical biopsies from patients diagnosed with invasive adenocarcinoma from 2 reference clinics in Brazil, and compared with 18 biopsies of endocervical polyps (control cases). The performance of the tests for p16ink4a was evaluated using a conventional contingency table, and the Kappa (k) index was used to evaluate the agreement of the marker with the tissue diagnosis. Results: In total, 66% of the invasive adenocarcinoma cases were positive for p16ink4a. All of the adenomatous polyps cases used as negative controls were shown to be negative for p16ink4a. The marker showed a high sensitivity and a high negative predictive value. The Kappa index was good for p16ink4a (k 1/4 0.6). Conclusion: Considering the strong association between the p16ink4a marker and the cervical adenocarcinoma, its use represents an important tool for reducing incorrect diagnoses of adenocarcinoma and thereby avoiding overtreatment.
| Autores principales: | , , , , |
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| Formato: | Digital revista |
| Idioma: | English |
| Publicado: |
Federação Brasileira das Sociedades de Ginecologia e Obstetrícia
2017
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| Acceso en línea: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-72032017000100021 |
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