Table 4.

Expression of chemokine receptors on CTC_EP

Chemokine receptor	CTC_EP –	CTC_EP+	p-value
CCR1
Mean	0.0052	0.0077	0.23
SEM	0.0018	0.0018
Median	0.0038	0.0055
CXCR4
Mean	0.0433	0.1191	0.03
SEM	0.0275	0.0275
Median	0.0275	0.0814
IFNAR2
Mean	0.0083	0.0149	0.15
SEM	0.0033	0.0033
Median	0.0075	0.0110
LTBR
Mean	0.0027	0.0033	0.36
SEM	0.0008	0.0008
Median	0.0018	0.0030
c-KIT
Mean	0.0007	0.0006	0.85
SEM	0.0002	0.0002
Median	0.0005	0.0006
NTRK1
Mean	0.0005	0.0012	0.23
SEM	0.0003	0.0003
Median	0.0004	0.0008
IL3RA
Mean	0.0530	0.0735	0.60
SEM	0.0162	0.0162
Median	0.0511	0.0559

Abbreviations: SEM standard error of the mean, CTC_EP – epithelial circulating tumor cells absent, CTC_EP+ epithelial circulating tumor cells absent