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Table 3 Percentage of patients with at least one elevated marker at baseline

From: Assessment of circulating tumor cells and serum markers for progression-free survival prediction in metastatic breast cancer: a prospective observational study

Markers assessed

N patients assessed

% with at least 1 elevated marker

CEA

CA 15-3

CYFRA 21-1

CTC

  

2 markers combinations

  

X

  

X

239

72%

X

X

  

240

75%

 

X

 

X

257

75%

  

X

X

225

77%

X

 

X

 

206

80%

 

X

X

 

231

86%

3 markers combinations

  

X

X

 

X

251

83%

X

 

X

X

233

86%

X

X

X

 

234

88%

 

X

X

X

234

88%

4 markers combination

  

X

X

X

X

246

90%

  1. Single marker positivity rates are given for each of the markers, Table 2.