Table 2.

Relationship analysis between PRF1 and the gene signatures of T cell exhaustion in GEPIA.

Description	Gene markers	HNSCC
		Cor	P
T cell exhaustion	PD-1(PDCD1)	0.86	***
	LAG3	0.84	***
	TIM-3(HAVCR2)	0.75	***
	LAYN	0.29	0.047
	TIGIT	0.82	***
	CXCL13	0.62	***
T cell exhaustion signatures		0.83	***

Cor, R value of Spearman's correlation. (*p < 0.01, **p < 0.001, ***p < 0.0001).