Table 1. Clinical and pathological characteristics of the patients.
| Characteristics | n | % |
|---|---|---|
| Number of patients | 27 | 100 |
| Age (years) | ||
| Median | 39.0 | |
| Range | 26-78 | |
| Tumor subtype | ||
| Luminal HER2-negative | 15 | 55.5 |
| Luminal HER 2-positive | 2 | 7.4 |
| Triple-negative | 8 | 29.6 |
| HER2 | 2 | 7.4 |
| Clinical Stage | ||
| I | 3 | 11.1 |
| II | 6 | 22.2 |
| III | 12 | 44.4 |
| IV | 6 | 22.2 |
| Line of treatment | ||
| Treatment-naïve | 3 | 11.1 |
| Adjuvant | 18 | 66.6 |
| Metastatic 1st line | 4 | 14.8 |
| Metastatic 2nd line | 1 | 3.7 |
| Metastatic 3rd line | 1 | 3.7 |
| Site of biopsy | ||
| Lung | 11 | 40.7 |
| Liver | 14 | 51.8 |
| Lymph node | 2 | 7.4 |