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Characteristics of 270 clinical samples used in the study.
| Characteristics | N° | % |
|---|---|---|
| Patient specimen | ||
| Surgical resection | 255 | 95 |
| Diagnostic core biopsy | 6 | 2 |
| Recurrent disease | 9 | 3 |
| Histological grade | ||
| G1 | 16 | 6 |
| G2 | 112 | 41 |
| G3 | 134 | 50 |
| Unknown | 8 | 3 |
| Pathological stage T | ||
| Tx–T1 | 143 | 53 |
| T2–T4 | 123 | 46 |
| Unknown | 4 | 1 |
| Pathological stage N | ||
| Nx–N0 | 147 | 54 |
| N1–N3 | 119 | 44 |
| Unknown | 4 | 1 |
| Hormone receptor status (HR) | ||
| Negative | 47 | 17 |
| Positive | 223 | 83 |
| HER2 overexpression by IHC | ||
| 0 | 39 | 14 |
| 1 | 49 | 18 |
| 2 | 49 | 18 |
| 3 | 133 | 49 |
