CD147 and Ki-67 overexpression confers poor prognosis in squamous cell carcinoma of oral tongue: a tissue microarray study.

OBJECTIVE: Squamous cell carcinoma of the oral tongue (SCCOT) exhibits high risk for recurrence and regional metastasis even after surgical resection. We assessed the clinicopathologic and prognostic significance of a group of functionally related biomarkers.

STUDY DESIGN: We used a tissue microarray consisting of SCCOT from 32 patients for this study. These patients were treated at the University of Texas MD Anderson Cancer Center from 1995 to 2008. Biomarker expression levels were examined by immunohistochemistry and graded semiquantitatively to determine their prognostic significance.

RESULTS: CD147 and Tp63 expressions were significantly associated with a higher T stage and Ki-67 labeling index, as well as a shorter overall survival (OS) rate. Expression of Tp63 associated positively with poorly differentiated histology. There was significant association of Tp63 with the expression levels of CD147 and Glut-1. Glut-1 overexpression was marginally associated with a higher T stage. There was no prognostic significance of CD44 v6 expression in SCCOT.

CONCLUSION: SCCOT with CD147 overexpression in combination with high Ki-67 labeling index had poor OS. CD147 and Ki-67 overexpression is associated with aggressive disease with poor prognosis in SCCOT.