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Table 2 Distribution of EP3 staining patterns

From: EP3 (prostaglandin E2 receptor 3) expression is a prognostic factor for progression-free and overall survival in sporadic breast cancer

   EP3 negative EP3 positive  
   n (%) n (%) p-value
histology
  NST 42 (14.5) 102 (35.3)  
  non NST 42 (14.5) 103 (35.6) 0.970
tumor foci
  unifocal 44 (15.2) 107 (37.0)  
  ≥ 2 foci 40 (13.8) 98 (33.9) 0.977
tumor grade
  G1-G2 31 (20.5) 76 (50.3)  
  G3 13 (8.6) 31 (20.5) 0.944
pT
  pT1 53 (18.3) 140 (48.4)  
  pT2-pT4 31 (10.7) 65 (22.5) 0.394
pN
  pN0 42 (14.6) 123 (42.9)  
  pN1-pN3 41 (14.3) 81 (28.2) 0.132
ER
  negative 12 (4.2) 43 (14.9)  
  positive 72 (24.9) 162 (56.1) 0.188
PR
  negative 30 (10.4) 89 (30.8)  
  positive 54 (18.7) 116 (40.1) 0.227
HER2
  negative 70 (24.9) 176 (62.6)  
  positive 11 (3.9) 24 (8.5) 0.716
age (years)
  median 59.0   57.7   
  range 62   60   0.286
  1. NST no special type, ER estrogen receptor, PR progesterone receptor