Higher ER load is not associated with better outcome in stage 1-3 breast cancer: a descriptive overview of quantitative HR analysis in operable breast cancer.

Iris NoordhoekA F de GrootD CohenG J LiefersJ E A PortieljeJ R Kroep
Published in: Breast cancer research and treatment (2019)
There is no clear evidence for using quantitatively assessed ER and PR as prognostic nor predictive marker in patients with stage 1-3 breast cancer. We recommend only using a qualitative HR status in future guidelines and treatment considerations.