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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.