2.
Baseline CTC comparison according to clinical characteristics in first-line TNBC (N=50)
| Characteristics | Number of patients | n (%) | P | |
| ≤2 CTC/2 mL | >2 CTC/2 mL | |||
| Age at diagnosis (year) | 0.754a | |||
| ≤45 | 17 | 9 (52.9) | 8 (47.1) | |
| >45 | 33 | 19 (57.6) | 14 (42.4) | |
| Unknown | 0 | |||
| Histological type | 0.497a | |||
| Ductal | 48 | 26 (54.2) | 22 (45.8) | |
| Lobular | 0 | 0 (NA) | 0 (NA) | |
| Others | 2 | 2 (100) | 0 (0) | |
| Unknown | 0 | |||
| Tumor grade | 1.000b | |||
| I | 1 | 1 (100) | 0 (0) | |
| II | 20 | 9 (45.0) | 11 (55.0) | |
| III | 15 | 8 (53.3) | 7 (46.7) | |
| Unknown | 14 | |||
| Tumor stage | 0.247b | |||
| I | 3 | 2 (66.7) | 1 (33.3) | |
| II | 17 | 7 (41.2) | 10 (58.8) | |
| III | 23 | 15 (65.2) | 8 (34.8) | |
| IV | 1 | 1 (100) | 0 (0) | |
| Unknown | 6 | |||
| Bone metastasis at relapse | 0.709a | |||
| Yes | 15 | 9 (60.0) | 6 (40.0) | |
| No | 35 | 19 (54.3) | 16 (45.7) | |
| Unknown | 0 | |||
| Liver metastasis at relapse | 0.815a | |||
| Yes | 11 | 7 (63.6) | 4 (36.4) | |
| No | 39 | 21 (53.8) | 18 (46.2) | |
| Unknown | 0 | |||
| Lung metastasis at relapse | 0.034a | |||
| Yes | 17 | 6 (35.3) | 11 (64.7) | |
| Table 2 (continued) | ||||