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Table 2 Immunohistochemical Findings in Triple Negative Breast Cancer

From: Frequently increased epidermal growth factor receptor (EGFR) copy numbers and decreased BRCA1 mRNA expression in Japanese triple-negative breast cancers

Variables Triple negative (N = 110)
  No. %
EGFR   
   Negative 69 62
   Positive 33 31
   Unknown 8 7
Cytokeratin 5/6   
   Negative 47 43
   Positive 57 52
   Unknown 6 5
Cytokeratin 14   
   Negative 43 40
   Positive 61 55
   Unknown 6 5
Cytokeratin 5/6/14   
   Negative 32 30
   Posotive 72 65
   Unknown 6 5
Basal-like phenotype   
   Negative 24 22
   Positive 77 70
   Unknown 9 8