Table 1.

Clinicopathological characteristics of HNSCC patients and controls.

	HNSCC Patients	Control Group
n (female/male)	7/25	6/12
Age range (y)	(49-85)	(24-71)
T- Primary tumor (n) T1 T2 T3 T4	3 6 14 9
N- Regional lymph node (n) N0 N1 N2a N3a N3b	19 7 1 1 4
M- Distant metastasis (n) M0	32
Stage grouping (n) I II III IVA	2 3 16 11
Grade (n) G1 G2 G3	1 29 2
Location (n) Oral cavity Oropharynx Hypopharynx Larynx	17 2 4 9