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Sunday, December 16, 2018

Clinical and histopathologic prognostic implications of the expression of cytokeratins 8, 10, 13, 14, 16, 18 and 19 in oral and oropharyngeal squamous cell carcinoma

Publication date: Available online 16 December 2018

Source: Archives of Oral Biology

Author(s): Rima-A. Safadi, Niveen-I. Abdullah, Rolla-F. Alaaraj, Dima H. Bader, Darshan D. Divakar, Abed H. Hamasha, Maher A. Sughayer

ABSTRACT
Objectives

To identify cytokeratins (CK) of significant correlations with clinical and histopathologic prognostic parameters in oral and oropharyngeal squamous cell carcinoma (SCC).

Design

The sample consisted of 100 cases retrieved from the archives of the Pathology Department/ King Hussein Cancer Center/Amman/ Jordan. Recorded data included: age, gender, location, grade, depth of invasion, the presence of epithelial dysplasia, tumor size, lymph node metastasis, number of positive lymph nodes, distant metastases, clinical stage, local recurrence, treatment modalities and 5-year survival rate. Immunohistochemical staining of 6 cytokeratins: 8, 10, 13, 14, 16, 18, and 19 was performed using standard protocols. Stained sections were digitized and analyzed using ImageJ-color deconvolution to identify the percentage of cytokeratin-positive area (score). Statistical tests used were: student t-test, analysis of variance, bivariate analysis and logistic regression.

Results

Lower CK8,18, 19 scores correlated with lower 5-year survival rate. Higher CK19 and lower CK 10, 14, 16 scores were associated with distant metastasis. Increased CK8, 18, 19 scores correlated with higher stage and with higher depth of invasion. The higher CK18 score was associated with local recurrence. Higher CK10, 13, 16 scores correlated with well-differentiated grade. Higher CK19 and lower CK16 scores were associated with adjacent epithelial dysplasia. Regression analysis showed that better 5-year survival rate was significantly correlated with increased CK16, decreased CK18 and 19 scores.

Conclusion

Expression scores of a panel of cytokeratin are potential prognostic indicators for 5-year survival and correlates with other prognostic parameters.



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