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| Characteristic | Cut off | Sensitivity (%) | Specificity (%) | AUC (95% CI) |
|---|---|---|---|---|
| FR+CTC (FU/3 mL) | 9.75 | 73.27 | 55.00 | 0.659 (0.560–0.759) |
| Tumor volume (mm3) | 118 | 93.55 | 38.71 | 0.698 (0.585–0.810) |
| Model: FR+CTC + tumor volume | 0.610 | 86.89 | 70.97 | 0.841 (0.754–0.927) |
AUC, area under the curve; FR+CTC, folate-receptor-positive circulating tumor cells; FU, folate receptor units.
