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Table 4 Association between HER2 and EGFR expression and tumour marker expression at metastasis

From: Serum epidermal growth factor receptor and HER2 expression in primary and metastatic breast cancer patients

  CA15.3 expression CEA expression
  Normal Over-expressed Normal Over-expressed
HER2 expression     
   Normal 12 5 17 0
   Over-expressed 10 19 19 10
   P = 0.019   P = 0.005
EGFR expression     
   Normal 17 20 29 8
   Over-expressed 5 4 7 2
   P = 0.718   P = 0.392
  1. CA, cancer antigen; CEA, carcinoembryonic antigen; EGFR, epidermal growth factor receptor; HER, human epidermal growth factor receptor.