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Table 4 HER2 interpretation: misclassifications in relation to the reference score

From: External Quality Assessment (EQA) program for the preanalytical and analytical immunohistochemical determination of HER2 in breast cancer: an experience on a regional scale

ID

Group

Total N° of misclassified slides(#)

Reference score 0(#)

Reference score 1 + (#)

Reference score 2 + (#)

Reference score 3 + (#)

PC1

3

1/10

0/2

1/3 [2+]

0/3

0/2

PC2

3

2/10

0/2

0/3

2/3 [1+;1+]

0/2

PC3

1

1/10

0/2

1/3 (*)

0/3

0/2

PC4

1

2/10

0/2

0/3

2/3 [1+;1+]

0/2

PC5

3

0/10

0/2

0/3

0/3

0/2

PC6

2

2/10

0/2

1/3 [2+]

1/3 [3+]

0/2

PC7

3

0/10

0/2

0/3

0/3

0/2

PC8

1

2/10

1/2 [1+] ^

0/3

1/3 [1+]

0/2

PC9

2

1/10

0/2

1/3 [2+]

0/3

0/2

PC10

2

2/10

0/2

1/3 [2+]

1/3 [1+]

0/2

PC11

2

2/10

0/2

1/3 [2+]

1/3 [1+]

0/2

PC12

1

2/10

0/2

1/3 [2+]

1/3 [1+]

0/2

PC13

3

3/10

0/2

2/3 [2+;2+]

1/3 [1+]

0/2

PC14

1

1/10

0/2

0/3

1/3 [1+]

0/2

PC15

2

2/10

0/2

1/3 [2+]

1/3 [3+]

0/2

PC16

3

4/10

0/2

2/3 [0;0]

2/3 [1+;1+]

0/2

Total

27/160

1/32

12/48

14/48

0/32

 
  1. (*) Slide not evaluated. (#)N° of misclassified slides/N° of received slides. ^Brackets report the score provided by PCs.
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Journal of Experimental & Clinical Cancer Research

ISSN: 1756-9966

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