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Breast Cancer Subtypes and its Correlation with Immunohistochemistry (IHC)
| Subtype | IHC |
|---|---|
| Luminal A | ER+, PR+, HER2-, CK8 and 18; Ki67 <14% |
| Luminal B | ER+, PR±, HER2±, CK8 and 18; Ki67 ≥14% |
| HER2 + | ER-, PR-, HER2+; high Ki67 |
| Basal | ER-, PR-, HER2-; CK5/6+; EGFR+ |
| Claudin low | ER-, PR-, HER2-; Ki67 intermediate |
