Clinical Significance of Circulating Tumor Cells (CTCs) and Survivin on Predicting Prognosis in Thyroid Cancer Patients

Table 2

Comparison of different CTC numbers on patient PFS.

Variables	HR	95% CI	value
CTC in vs. ≤6/5 mL	8.152	3.12 to 21.13	<0.0001
CTC in vs. ≤6/5 mL	5.531	2.33 to 13.03	<0.0001
MCTC in PTC negative vs. positive	0.131	0.07 to 0.26	<0.0001
MCTC in FTC negative vs. positive	0.136	0.06 to 0.29	<0.0001

CTC: circulating tumor cell; PFS: progression-free survival; PTC: papillary thyroid cancer; FTC: follicular thyroid cancer; MCTC: mesenchymal circulating tumor cell; HR: hazard ratio; CI: confidence interval.