Detection of CK20mRNA in peripheral blood of pancreatic cancer and its clinical significance

Table 1 Associations between CK20mRNA and clinicopathologic variables in pancreatic cancer (Fisher’s exact test).

Variable	n	CK20 (+)	CK20 (-)	P-value
Sex
Male	28	16	12	0.612
Female	12	7	5
Age (yr)
≥65	19	9	10	0.218
<60	21	14	7
Tumor size
≥3 cm	30	17	13	0.577
<3 cm	10	6	4
Tumor differentiation
High differentiation	14	4	10	0.009
Moderate+poor	26	19	7
Lymph node metastasis
Negative	10	2	8	0.008
Positive	30	21	9
Tumor stage (TNM)
II	11	3	8	0.021
III	29	20	9
Depth of tumor invasion
T1-T2	12	5	7	0.164
T3-T4	28	18	10