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HER2 expression distribution according to breast cancer subtype in the HER2-negative primary and recurrent breast cancer cohort.
| HER2 expression n (%) | |||
|---|---|---|---|
| 0 | Low | p | |
| Primary breast cancer n (%) | |||
| HR-positive/HER2-negative | 177 (52.7) | 159 (47.3) | 0.060 |
| Triple-negative | 51 (64.6) | 28 (35.4) | |
| Recurrent breast cancer n (%) | |||
| HR-positive/HER2-negative | 139 (46.2) | 162 (53.8) | 0.001 |
| Triple-negative | 74 (63.8) | 42 (36.2) | |
