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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