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Patient characteristics.
| Characteristic | N | % | |
|---|---|---|---|
| Histology | Ductal | 43 | 74.1% |
| Lobular | 11 | 19.0% | |
| Others and unknown | 4 | 6.9% | |
| Grade | 1 | 1 | 1.7% |
| 2 | 34 | 58.6% | |
| 3 | 22 | 37.9% | |
| Unknown | 1 | 1.7% | |
| Receptor status | Hormone receptor positive | 44 | 75.9% |
| HER2 positive | 3 | 5.2% | |
| Triple negative | 13 | 22.4% | |
| Sample type | Primary tumor | 42 | 72.4% |
| Metastasis | 16 | 27.6% | |
| Biopsy | 22 | 37.9% | |
| Resection | 36 | 62.1% | |
