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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.