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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.