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| Primary breast cancer | Metastatic breast carcinoma | ||||||
|---|---|---|---|---|---|---|---|
| + | − | n | + | − | n | ||
| Luminal (A,B) | 0 (0%) | 240 (100%) | 240 | 0 (0%) | 44 (100%) | 44 | |
| HER2 | 2 (3.1%) | 63 (96.9%) | 65 | 1 (9.1%) | 10 (90.9%) | 11 | |
| TNBC | 48 (67.6%) | 23 (32.4%) | 71 | 15 (68.2%) | 7 (31.8%) | 22 | |
| n | 50 | 110 | 376 | 16 | 61 | ||
| χ2 | 359.047 | 71.263 | |||||
| P value | <0.001 | <0.001 | |||||
