Table 1.

Clinicopathological characteristics.

Characteristic	Number (Percentage)
Sex
Male	42 (71.2%)
Female	17 (28.8%)
Age
<18 years old	40 (67.8%)
≥18 years old	19 (32.2%)
Tumor stage (AJCC 8th) at diagnosis
II	37 (62.7%)
III	2 (3.4%)
IV	15 (25.4%)
Uncertain	5 (8.5%)
Sampling method for WES
Surgery	48 (81.4%)
Core-needle biopsy	10 (16.9%)
Open biopsy	1 (1.7%)
Lesion type
Primary lesion	52 (88.1%)
Recurrent lesion	5 (8.5%)
Metastatic lesion	2 (3.4%)
Adjuvant therapy
Chemotherapy only	50 (84.7%)
Chemotherapy + Radiotherapy	1 (1.7%)
Chemotherapy + ICIs	3 (5.1%)
Radiotherapy only	1 (1.7%)
None	4 (6.8%)

WES, whole exome sequencing; ICIs, Immune checkpoint inhibitors.