Table 3.

Correlation between miR-21 level and tumor markers.

Variable	r Value	P
TNF-α (pg/mL)	0.531	0.018
NSE (ng/mL)	0.773	0.005
SCC-Ag (ng/mL)	0.406	0.033
CEA (ng/mL)	0.783	<0.001