Table 3. Relationship between gene expressions of the 6 most overexpressed genes in our series of 96 HNSCCs.

	CDK6	EGFR	PGF	MET	VEGFA	PDL1
CDK6	1 a
	< 0.0000001
EGFR	0.33	1
	0.0012	< 0.0000001
PGF	0.088	0.275	1
	0.4	0.0066	< 0.0000001
MET	0.384	0.209	0.119	1
	0.00016	0.039	0.25	< 0.0000001
VEGFA	−0.049	0.22	0.351	0.114	1
	0.64	0.029	0.00056	0.27	< 0.0000001
PDL1	0.09	0.017	0.1	−0.019	−0.083	1
	0.39	0.86	0.33	0.85	0.43	< 0.0000001
MKI67	0.01	0.05	−0.119	−0.091	0.256	0.034
	0.92	0.63	0.25	0.38	0.011	0.74

^aSpearman rank correlation test.