Table 1.

Biological subtypes of breast cancer (based on [32])

Breast cancer subtype	Breast cancer subtype	Progesterone receptor	HER2 receptor	Ki-67
Luminal A-like	Positive	Positive	Negative	Low (< 20%)
Luminal B-like (HER2 negative)	Positive	Negative or low	Negative	High (> 20%)
Luminal B-like (HER2 positive)	Positive	Any	Positive	Any
HER2 positive (HER2 enriched)	Negative	Negative	Positive	Any
Triple negative (basal like)	Negative	Negative	Negative	Any