Table 1 Patient characteristics
Variables | Patients (N = 23) | % |
|---|---|---|
Age at enrollment (years), median (range) | 56 (31–70) |  |
Sex | ||
 Male | 21 | 91.3 |
 Female | 2 | 8.7 |
Tumor Site | ||
 Oropharynx | 3 | 13.0 |
   Root of tongue | 1 | 4.3 |
   Tonsil | 2 | 8.7 |
 Larynx | 3 | 13.0 |
 Hypopharynx | 1 | 4.3 |
 Oral Cavity | 16 | 69.7 |
   Tongue | 11 | 47.8 |
   Oral floor | 2 | 8.7 |
   Gingiva | 1 | 4.3 |
   Cheek | 1 | 4.3 |
   Mandible | 1 | 4.3 |
T category | ||
 T1 | 1 | 4.3 |
 T2 | 2 | 8.7 |
 T3 | 8 | 34.8 |
 T4a | 11 | 47.8 |
 T4b | 1 | 4.3 |
N category | ||
 N0 | 5 | 21.7 |
 N1 | 5 | 21.7 |
 N2 | 8 | 34.8 |
 N3 | 5 | 21.7 |
AJCC stage (the eighth edition) | ||
 III | 8 | 34.8 |
 IVA | 12 | 52.2 |
 IVB | 3 | 13.0 |
Smoking | ||
 Never smoking | 2 | 8.7 |
 No smoking for 2 years | 3 | 13.0 |
 Smoking | 18 | 78.3 |
HPV status (p16 expression) | ||
 < 25% | 14 | 60.9 |
 26%–75% | 3 | 13.0 |
 > 75% | 4 | 17.4 |
 NA | 2 | 8.7 |
PD-L1 expression CPS | ||
 < 1 | 1 | 4.3 |
 1 ~ 19 | 8 | 34.7 |
 ≥ 20 | 12 | 52.2 |
 NA | 2 | 8.7 |