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Table 2 Staining results for HER2 protein expression and gene amplification

From: The validation of a novel method combining both HER2 immunohistochemistry and HER2 dual-colour silver in situ hybridization on one slide for gastric carcinoma testing

 

Single method

Combined method

IHC Score

IHC (n=96)

SISH ≥ 2.0

IHC (n=96)

SISH ≥ 2.0

n(%)

n(%)

n(%)

n(%)

0

68 (70.8)

2 (2.9)

68 (70.8)

2 (2.9)

1+

10 (10.4)

1 (10.0)

11 (11.5)

1 (9.1)

2+

9 (9.4)

4 (44.4)

7 (7.3)

2 (28.6)

3+

9 (9.4)

7 (77.8)

10 (10.4)

9 (90.9)

  1. Abbreviations: IHC immunohistochemistry, SISH silver in situ hybridization.