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Table 2 Characteristics of breast primary in study population

From: A retrospective study investigating the rate of HER2 discordance between primary breast carcinoma and locoregional or metastatic disease

 

Number of patients (%)

Stage at diagnosis

 

  1

20 (17.2)

  2

52 (44.8)

  3

30 (25.9)

  4

14 (12.2)

Grade

 

  1

8 (6.9)

  2

51 (44)

  3

57 (49.1)

Nodal status

 

  Negative

23 (19.8)

  Positive

93 (80.2)

HR status

 

  ER and/or PR positive

74 (63.8)

  ER and PR negative

42 (36.2)

HER2 status

 

  Negative

79 (68.1%)

  Positive

37 (31.8%)

Neoadjuvant or Adjuvant treatment

 

  Nil or non-compliant

14 (13.7)

  Endocrine only

6 (5.9)

  Non-anthracycline chemotherapy

11 (10.8)

  Anthracycline-base chemotherapy

38 (37.3)

  Anthracycline and taxane

29 (28.4)

  Taxane only

4 (3.9)

Adjuvant trastuzumab

10 (8.6)

Disease-free interval, median (range)

36.3 (26.2 – 135)