ESR1 and neoplasm: Post-surgical IHC of the residual tumor showed: ER 90% (3+), PR 70% (2-3+), HER2 (c-erbB-2) 1+, Ki-67 5%, AR 90% (3+), GATA-3 +, E-Cadherin +, P120 membrane +, and no evidence of vascular invasion.