CTLA-4 and PD-1 Ligand Gene Expression in Epithelial Thyroid Cancers

Table 2

Correlation among the expression levels of PD-1 and CTLA-4 ligands.

	Correlation coefficient and values
	PD-L1	PD-L2	CD80	CD86
PD-L1	1.000	0.693	0.539	0.405
	—	<0.001	<0.001	<0.001
PD-L2		1.000	0.644	0.598
		—	<0.001	<0.001
CD80			1.000	0.509
			—	<0.001
CD86				1.000
				—