Table 1 Patient and tumor characteristics

Number of patients

228

58

58

112

Age (years), mean (range)

55.5 (31.8–81.1)

58.0 (33.2–80.8)

58.6 (40.9–81.1)

52.7 (31.8–73.9)

Clinical classification

 Histology

  Ductal

186

52

37

97

  Lobular

21

4

11

6

  Medullary

0

0

0

0

  Ductal carsinoma in situ (DCIS)

4

0

4

0

  Metaplastic

1

0

1

0

  Mucinous

4

0

2

2

  Tubular

4

1

1

2

  Mixed

2

1

0

1

  Papillary

0

0

0

0

  NA

6

0

2

4

 Primary tumor

  Tx or NA

9

1

3

5

  T0

0

0

0

0

  pTis

4

0

4

0

  T1

113

31

28

54

  T2

93

24

21

48

  T3

9

2

2

5

  T4

0

0

0

0

 Grade

  I

31

8

10

13

  II

93

20

24

49

  III

97

30

21

46

  NA

7

0

3

4

 Node status

  N0

133

34

36

63

  N1(mi)

8

3

3

2

  N1

59

17

13

29

  N2

14

2

3

9

  N3

8

2

1

5

  NA

6

0

2

4

 Receptor status

  HER2+

26

7

7

12

  HER2−

192

51

45

96

  ER+

178

49

42

87

  ER−

40

9

10

21

  PR+

155

39

36

80

  PR−

63

19

16

28

  NA

10

0

6

4