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Table 2 HER2 status of selected cases.

From: Confirmation of a low HER2 positivity rate of breast carcinomas - limitations of immunohistochemistry and in situ hybridization

 

Routine

PNBSs

IHC

Study

PTMA

IHC

Study

PTMA

FISH

Case 1

2+

2+

A

Case 2

3+

ND

NA

Case 3

3+

0/1+

NA

Case 4

0/1+

0/1+

A

Case 5

0/1+

0/1+

E

Case 6

0/1+

ND

PS

  1. A amplified; E equivocal; FISH fluorescence in situ hybridization; IHC immunohistochemistry; NA not amplified; ND not done; PNBSs paraffinized needle biopsy specimens; PS polysomy chromosome 17; PTMA paraffin tissue microarray.