Table 2.

Correlation between TNM stage of pancreatic cancer and ULBP ligands

Ligands	TNM stage I–II (n)	TNM stage III–IV (n)	P-value
m-ULBP1			<0.001
Low	14	41
High	21	4
m-ULBP2			0.41
Low	26	39
High	9	6
m-ULBP3			0.09
Low	24	38
High	11	7
s-ULBP1 (mean ±SD)	28.78±2.12	29.91±1.94	0.70
s-ULBP2 (mean ±SD)	137.67±22.84	127.83±15.62	0.72
s-ULBP3 (mean ±SD)	6.73±0.47	7.56±0.29	0.07

Abbreviations: TNM, tumor, node, metastasis; m-ULBP, membrane ULBP; s-ULBP, soluble ULBP; SD, standard deviation.