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Table 1 Characteristics of Patients with Different Tumor Subtypes

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

Variables

Total

Triple negative

Non-triple negative

P value

 

N = 486 (100%)

N = 71 (15%)

N = 415 (85%)

 
 

No.

%

No.

%

No.

%

 

Age, years

      

0.49

   ≤50

198

41

32

44

166

40

 

   >50

288

59

39

56

249

60

 

Size

      

0.23

   ≤2 cm

181

37

21

30

160

39

 

   >2 cm

288

59

46

65

242

58

 

   Unknown

17

 

4

5

13

3

 

Nodal status

      

0.02

   Negative

275

57

48

68

227

55

 

   Positive

192

40

19

27

173

42

 

   Unknown

19

3

4

5

15

3

 

Histology

      

0.14

   Ductal

454

94

66

93

388

93

 

   Lobular

16

3

0

0

16

4

 

   Other

16

3

5

7

11

3

 

Grade

      

<0.0001

   1

92

19

4

6

88

21

 

   2

273

56

32

45

241

58

 

   3

101

21

34

48

67

16

 

   Unknown

20

4

1

1

19

5

 

TP53 expression

      

<0.0001

   Negative

392

81

43

61

349

84

 

   Positive

92

19

28

39

64

15

 

   Unknown

2

0

0

0

2

1

 

Ki67 expression

      

<0.0001

   Low

333

69

34

48

299

72

 

   High

150

31

37

52

113

27

 

   Unknown

3

1

0

0

3

1

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