Table 1 Cyclin D1 scores (as % staining)

From: Cyclin D1 immunohistochemical staining to separate benign from malignant mesothelial proliferations

Score

0

1–25%

26–50%

51–75%

76–100%

N

Tissue microarray 1

      

 Reactive epithelial proliferations

10

6

0

0

0

16

 Reactive spindle cell proliferations

4

8

3

0

0

15

 Epithelial malignant mesotheliomas

5

5

2

3

12

27

 Sarcomatous/desmoplastic malignant mesotheliomas

1

1

1

1

4

8

Tissue microarray 2

 Reactive epithelial proliferations

32

4

0

0

0

36

 Reactive spindle cell proliferations

14

19

2

1

0

36

 Epithelial malignant mesotheliomas

1

4

6

6

10

27

 Sarcomatous/desmoplastic malignant mesotheliomas

4

4

0

0

6

14

Combined tissue microarrays

 Reactive epithelial proliferations

42

10

0

0

0

52

 Reactive spindle cell proliferations

18

27

5

1

0

51

 Epithelial malignant mesotheliomas

6

9

8

9

22

54

 Sarcomatous/desmoplastic malignant mesotheliomas

5

5

1

1

10

22

  1. Chi-square with Yates correction for combined microarrays
  2. Reactive epithelial proliferations vs. epithelial malignant mesotheliomas Chi-square = 63.1, df = 4, p < 1 × 10−7
  3. Reactive spindle cell proliferations vs. sarcomatous/desmoplastic malignant mesotheliomas Chi-square = 23.1 df = 4, p = 0.0001