Table 1.
Clinical characteristics of breast cancer (BC) patients.
| Clinical characteristic | Breast cancer | TNBC | Luminal BC | Undefined BC |
|---|---|---|---|---|
| No. of patients | 1,087 | 135 | 681 | 271 |
| Age (years) | ||||
| ≥60 | 502 | 41 | 321 | 140 |
| <60 | 585 | 94 | 360 | 131 |
| Pathologic stage | ||||
| I | 182 | 23 | 115 | 44 |
| II | 617 | 90 | 375 | 152 |
| III | 246 | 17 | 161 | 68 |
| IV | 20 | 2 | 12 | 6 |
| Undefined | 22 | 3 | 18 | 1 |
| Lymphnodes | ||||
| Positive | 475 | 43 | 303 | 129 |
| Negative | 456 | 82 | 261 | 113 |
| Undefined | 156 | 10 | 117 | 29 |
“Undefined BC” means that provided information on estrogen receptor (ER), progesterone receptor (PR), and HER2 expression are deficient, so those patients cannot be classified as any subtype of breast cancer.