Table 3. The characteristics of included PTC patients (TCGA dataset, N = 449).

Pathological parameters		No. of patients N (%)
Age	< 45	198 (45.3)
	≥ 45	239 (54.7)
Gender	Male	122 (27.9)
	Female	315 (72.1)
Tumor subtypes	Classical/Usual	310 (70.9)
	Tall cell	33 (7.6)
	Follicular	89 (20.4)
	Others	5 (1.1)
History of other tumor	No	406 (94.2)
	Yes	25 (5.8)
Pathological stage	I–II	285 (65.5)
	III–IV	150 (34.5)
T stage	T1–T2	264 (60.4)
	T3–T4	173 (39.6)
N stage	Nx–N0	236 (54.0)
	N1	201 (46.0)
M stage	M0	428 (98.2)
	M1	8 (1.8)
Focus types	Unifocal	228 (53.3)
	Multifocal	200 (46.7)
Extrathyroidal extension	No	280 (66.2)
	Yes	143 (33.8)
BRAFV600E	Mutation type	212 (48.5)
	Wild type	225 (51.5)