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Table 2 Results of HER2 Immunohistochemistry and FISH

From: Molecular subtypes of breast cancer in relation to paclitaxel response and outcomes in women with metastatic disease: results from CALGB 9342

Assay

Patients (n [%])

HER2 CB11 score

 

   Negative

130 (80%)

   Positive

32 (20%)

   Total

162 (100%)

HER2 HercepTest score

 

   0

63 (40%)

   1

45 (28%)

   2

17 (11%)

   3

33 (21%)

   Total

158 (100%)

HER2 FISH

 

   HER2/CEP17 ratio <2.0

113 (74%)

   HER2/CEP17 ratio ≥2.0

39 (26%)

   Total

152 (100%)

  1. FISH, fluorescent in situ hybridization.