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. Author manuscript; available in PMC: 2019 Jan 1.

Published in final edited form as: Cancer Epidemiol Biomarkers Prev. 2017 Oct 20;27(1):3–10. doi: 10.1158/1055-9965.EPI-17-0420

Table 1.

Available surrogates for molecular classification of breast cancer

Intrinsic Subtype	Definitions
Intrinsic Subtype	HR and HER2	St. Gallen 2011	St. Gallen 2013
Luminal A	ER+ and/or PR+, HER2−	ER+, HER2−, Ki67 <14%	ER+, PR>20%, HER2−, Ki67<20%
Luminal B	ER+ and/or PR+, HER2+	ER+, HER2+, Ki67>14%	ER+, HER2− and/or PR < 20% or Ki67 > 20%
Luminal B	ER+ and/or PR+, HER2+	ER+, HER2+, Ki67>14%	ER+, HER2+
HER2-enriched	ER−, PR−, HER2+	ER−, PR−, HER2+	ER−, PR−, HER2+
Triple Negative	ER−, PR−, HER2−	ER−, PR−, HER2−	ER−, PR−, HER2−