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Table 3 Serum oncogene/tumour marker over-expression

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

Status at metastasis

NME

EGFR

HER2

EGFR or HER2

CA15.3

CEA

CA15.3 or CEA

EGFR or HER2, or CA15.3 or CEA

Number (out of 50)

11

9

29

32

26

11

26

39

%

22

18

58

64

52

22

52

78

  1. CA, cancer antigen; CEA, carcinoembryonic antigen; EGFR, epidermal growth factor receptor; HER, human epidermal growth factor receptor; NME, no marker elevation.