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Table 3 Correlation between NPM2 expression level (negative vs. low expression vs. high expression) and clinicopathological characteristics of MPM

From: Loss of NPM2 expression is a potential immunohistochemical marker for malignant peritoneal mesothelioma: a single-center study of 92 cases

Variable

n (%)

NPM2 expression level (n, %)

P

Negative

Low

High

Gender

    

0.501

 Male

47 (48.9)

38 (41.3)

5 (5.4)

4 (5.6)

 

 Female

45 (51.1)

32 (34.8)

6 (6.5)

7 (7.6)

 

Age

    

0.723

 < 65

75 (81.5)

58 (63.0)

8 (8.7)

9 (9.8)

 

 ≥ 65

17 (18.5)

12 (13.0)

3 (3.3)

2 (2.2)

 

History of targeted therapy

    

0.173

 No

65 (70.7)

52 (56.5)

5 (5.4)

8 (8.7)

 

 Yes

27 (29.3)

18 (19.6)

6 (6.5)

3 (3.3)

 

Increased preoperative TMsa

    

0.139

 No

28 (30.4)

18 (19.6)

4 (4.3)

6 (6.5)

 

 Yes

64 (69.6)

52 (56.5)

7 (7.6)

5 (5.4)

 

Ascites (mL)

     

 0

19 (20.7)

12 (13.0)

2 (2.2)

5 (5.4)

0.256

 0–1000

16 (17.4)

11 (12.0)

3 (3.3)

2 (2.2)

 

 > 1000

57 (62.0)

47 (51.1)

6 (6.5)

4 (4.3)

 

PCI score

    

0.094

 < 20

26 (28.3)

16 (17.4)

4 (4.3)

6 (6.5)

 

 ≥ 20

66 (71.7)

54 (58.7)

7 (7.6)

5 (5.4)

 

CC score

    

0.020

 0/1

48 (52.2)

32 (34.8)

6 (6.5)

10 (10.9)

 

 2/3

44 (47.8)

38 (41.3)

5 (5.4)

1 (1.1)

 

Ki-67 index

    

0.093

 ≤ 9%

15 (16.3)

8 (8.7)

4 (4.3)

3 (20.0)

 

 > 9%

77 (83.7)

62 (67.4)

7 (7.6)

8 (8.7)

 

Vascular tumor emboli

    

0.004

 No

67 (72.8)

46 (50.0)

10 (10.9)

11 (12.0)

 

 Yes

25 (27.2)

24 (26.1)

1 (1.1)

0 (0.0)

 

SAEs

    

0.009

 No

63 (68.5)

44 (47.8)

11 (12.0)

8 (8.7)

 

 Yes

29 (31.5)

26 (28.3)

0 (0.0)

3 (3.3)

 
  1. TMs tumor markers. aAny one of carcinoembryonic antigen, carbohydrate antigen (CA) 19-9, CA 125, and alpha-fetoprotein was increased. PCI peritoneal cancer index, CC completeness of cytoreduction, SAEs serious adverse events