Molecular profiling of the Basal-like intrinsic molecular subtype in primary ER-positive HER2-negative breast cancer
Background: The clinical management of ER-positive/HER2-negative (ERpHER2n) breast cancer is complicated by a heterogeneous patient population, with some patients exhibiting endocrine resistance and an increased risk of recurrence. Among these high-risk subgroups, ERpHER2n Basal-like (ERpHER2n-Basal) breast cancer, as defined by PAM50 gene expression subtyping, remains poorly characterized due to
