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Table 3 Concordance analysis using the χ2 test between the presence and absence of polysomy 17 and clinicopathological variables in a subgroup of 2+/3+ IHC patients

From: Polysomy of chromosome 17 in breast cancer tumors showing an overexpression of ERBB2: a study of 175 cases using fluorescence in situhybridization and immunohistochemistry

Parameter

Non-polysomy (%)

Polysomy (%)

P

HG

   

   I

15.6

5.3

 

   II

43.8

63.2

0.243

   III

40.6

31.6

 

Nodal status

   

   pN-

61.3

35.3

0.046

   pN+

38.7

64.7

 

ER

   

   -

41.7

40.9

0.947

   +

58.3

59.1

 

PgR

   

   -

60

54.5

0.632

   +

40

45.5

 

p53

   

   -

61

63.6

0.817

   +

39

36.4

 

Relapse

   

   No

77

63.6

0.181

   Yes

23

36.4

 
  1. ER, estrogen receptor; HG, histological grade; PgR, progesterone receptor.