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Table 2 HER2 distribution by IHC and FISH

From: ER and HER2 expression are positively correlated in HER2 non-overexpressing breast cancer

HER2

FISH

  

Positive

Negative

Equivocal

Not available

Total

IHC

Positive (3+)

29

5

2

1

37

 

Equivocal (2+)

2

13

-

4

19

 

Negative (1+)

2

91

1

7

101

 

Negative (0)

1

86

-

9

96

 

Not available

-

4

-

-

4

 

Total

34

199

3

21

257

  1. FISH, fluorescence in situ hybridization; HER2, human epidermal growth factor receptor 2; IHC, immunohistochemistry.