Table 1. Clinical and pathological characteristics of all participants.

Case information	Cancer (n=50)	Normal (n=20)
Ages/years	31–73 (median: 54)	33–68 (median: 50)
Gender
Male	32	14
Female	18	6
Sites
Tongue	28	5
Bucca	22	15
Tumor classification
T1	8	NA
T2	32	NA
T3	8	NA
T4	2	NA
Lymphatic metastasis
N0	4	NA
N1	6	NA
N2	40	NA
N3	0	NA
Distant metastasis	0	NA
Tumor grading
I	16	NA
II	32	NA
III	2	NA
Post-treatment Recurrence	12	NA
Post-treatment Metastasis	0	NA

NA, not applied.