Table 4.

CMTM6, PD-L1, and PD-1 expression on labial gland

	pSS	Non-pSS	P
CMTM6 positive	38 (76%)	9 (21.4%)	<0.001
PD-L1 positive	35 (70%)	13 (31%)	<0.001
PD-1 positive	32 (64%)	14 (33.3%)	0.004

Chi-square test.