Table 1 Relationship between PELI1 and clinicopathological characteristics of PC patients (chi-square test)

Total cases

36

54

Age

<  60

20

27

0.267

0.605

≥ 60

16

27

Gender

Male

24

29

1.499

0.221

Female

12

25

Tumor size

<  5

30

30

7.50

0.006

≥ 5

6

24

pTNM stage

I-II

34

19

31.331

< 0.001

III-IV

2

35

T stage

I-II

26

19

11.852

0.001

III-IV

10

35

Lymphatic node metastasis

N0

20

13

9.219

0.002

N1

16

41

Distantly metastasized

M0

34

32

13.674

< 0.001

M1

2

22

Number of foci

Single

29

40

0.507

0.476

Multiple

7

14

Vascular invasion

No

26

26

5.132

0.023

Yes

10

28

Nerve violation

No

12

19

0.033

0.856

Yes

24

35

Degree of differentiation

Low

8

27

8.42

0.015

Middle

23

25

High

5

2

CEA

2.375(1.775 ~ 4.305)

3.575(2.375 ~ 2.288)

2.949

0.085

CA19–9

85.6

(24.68 ~ 284.25)

295.95(72.79 ~ 580.70)

6.54

0.011