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Immunohistochemically defined breast cancer molecular subtypes.
| ER | PR | HER2 | |
|---|---|---|---|
| Luminal A | ER (+) and/or PR (+) | (−) | |
| Luminal B | ER (+) and/or PR (+) | (+) | |
| HER2-enriched | (−) | (−) | (+) |
| Triple negative | (−) | (−) | (−) |
ER, estrogen receptor; PR, progesterone receptor.
