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Incident cohort of patients with metastatic breast cancer
| Percentage% | Number of patients | Source | |
| Incident cases of mBC | 100 | 2923 | 1 9–11 |
| HER2−/HR+ | 54 | 1575 | 3 |
| HER2+/HR+ | 18 | 520 | 3 |
| HER2+/HR− | 11 | 324 | 3 |
| Triple negative | 17 | 503 | 3 |
HER2, human epidermal growth factor receptor 2; HR, hormonal receptor; mBC, metastatic breast cancer.
