Only estrogen receptor "positive" is not enough to predict the prognosis of breast cancer.
Jai Min RyuHee Jun ChoiIsaac KimSe Kyung LeeJonghan YuJee-Eun KimByeong-Il KangJeong Eon LeeSeok Jin NamSeok Won KimPublished in: Breast cancer research and treatment (2018)
ER expression levels affect the prognosis of breast cancer. The risk for patients with weakly ER-positive breast cancer should not be underestimated.