Table 1.
Characteristics of TNBC patients and histopathological tumor characteristics on tumor biopsy.
| Characteristic | N(%) |
|---|---|
| Total | 142 |
| Age at diagnosis | |
| <50 | 68 (47.9%) |
| ≥50 | 74 (52.1%) |
| Unknown | 0 |
| Genetic mutation | |
| No | 73 (70.2%) |
| Yes | 31 (29.8%) |
| Unknown | 38 |
| BMI | |
| <25 | 86 (62.8%) |
| ≥25 | 51 (37.2%) |
| Unknown | 5 |
| Bilateral disease | |
| No | 138 (97.2%) |
| Yes | 4 (2.8%) |
| Unknown | 0 |
| Multifocal disease | |
| No | 102 (71.8%) |
| Yes | 40 (28.2%) |
| Unknown | 0 |
| Histology on tumor biopsy | |
| Ductal | 131 (93.6%) |
| Other | 9 (6.4%) |
| Unknown | 2 |
| Grade on tumor biopsy | |
| II | 4 (3.3%) |
| III | 119 (96.7%) |
| Unknown | 19 |
| Ki-67 on tumor biopsy | |
| <20 | 10 (7.1%) |
| ≥20 | 132 (92.9%) |
| Unknown | 0 |
| HER2 on tumor biopsy | |
| 0 | 57 (41.0%) |
| 1+/2+(ISH negative) | 82 (58.9%) |
| Unknown | 3 |
| Clinical T stage | |
| T1 | 19 (13.5%) |
| T2 | 106 (75.2%) |
| T3 | 6 (4.2%) |
| T4 | 10 (7.1%) |
| Unknown | 1 |
| Clinical N stage | |
| N0 | 80 (56.3%) |
| N+ | 62 (43.7%) |
| Unknown | 0 |