Frequencies of the immunohistochemically defined subtypes of breast cancers in 663 carcinoma cases informative for the tested markers using tissue microarrays
Group | HER2 | ER | Cytokeratin 5/6 and/or HER1 | Frequency (%) |
---|---|---|---|---|
H (HER2) | Positive | Any | Any | 150 (23) |
E (luminal) | Negative | Positive | Any | 263 (40) |
B (basal-like) | Negative | Negative | One or both positive | 102 (15) |
N (negative) | Negative | Negative | Negative | 148 (22) |