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Table 1 Clinicopathological characteristics of estrogen-receptor-negative breast tumors according to basal cytokeratin (CK5/14) status

From: Basal-like phenotype is not associated with patient survival in estrogen-receptor-negative breast cancers

Clinicopathological parameter

CK5/14 negative (percentage)

CK5/14 positive (percentage)

p

All estrogen-receptor-negative tumors

60 (63)

35 (37)

 

Axillary lymph node status

   

   Negative

23 (38)

19 (54)

0.14

   Positive

37 (62)

16 (46)

 

HER-2 status

   

   Non-amplified

35 (58)

30 (86)

0.01

   Amplified

18 (30)

3 (9)

 

   Data missing

7 (12)

2 (6)

 

p63

   

   Negative

57 (95)

33 (94)

1.00

   Positive

3 (5)

2 (6)

 

p53

   

   Negative

26 (43)

13 (37)

0.65

   Positive

26 (43)

17 (49)

 

   Data missing

8 (13)

5 (14)

 

Histological type

   

   Invasive ductal or mixed type

49 (82)

28 (80)

0.10

   Invasive lobular

5 (8)

0 (0)

 

   Medullary or atypical medullary

5 (8)

7 (20)

 

   Other types

1 (2)

0 (0)

 
  1. The p values were calculated, excluding the 'data missing' values, with Fisher's exact test except for the p value of histological type, which was calculated with the χ2 test.