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Table 4 Comparison between HER2 amplified and non-amplified primary breast cancers

From: HER2gene status in primary breast cancers and matched distant metastases

Characteristic

n amplified (percentage)

n not amplified (percentage)

p

pT category

   

   pT1

3 (10.3)

26 (89.7)

0.31

   pT2

13 (26.5)

36 (73.5)

 

   pT3

2 (28.6)

5 (71.4)

 

   pT4

2 (14.3)

12 (85.7)

 

   Not available

2 (33.3)

4 (66.7)

 

Nodal status

   

   Positive

14 (21.9)

50 (78.1)

0.44

   Negative

4 (14.8)

23 (85.2)

 

   Not available

4 (28.6)

10 (71.4)

 

Histologal type

   

   Ductal

20 (24.4)

62 (75.6)

0.30

   Lobular

2 (16.7)

10 (83.3)

 

   Ductulo-lobular

0

10 (100)

 

   Medullary

0

1(100)

 

Nuclear grade

   

   1

0

7 (100)

0.01

   2

4 (9.8)

37 (90.2)

 

   3

18 (32.7)

37 (67.3)

 

   Not available

0

2 (100)

 
  1. HER2, gene encoding human EGF-like receptor 2.