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Subtypes
Luminal tumors: ER positive/HER2 negative
Luminal like-A: High ER, high PgR,
low proliferative index and low
grade
Low risk tumors. No “genomic testing”
Luminal A/B like
A spectrum : low-intermediate
expression of ER and PgR,
intermediate grade, intermediate
proliferative index
Recommended use of “genomic
testing”
Luminal B-like: low expression of
ER and PgR, high grade, high
proliferative index
High risk
Classification and pathology
assessment
Definition
St Gallen 2017
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