label: luminal A breast carcinoma
label_lc: luminal a breast carcinoma
description: "A biologic subset of breast carcinoma defined by high expression of genes characteristic of luminal epithelial cells, including estrogen receptor (ER), estrogen regulated protein LIV-1, and the transcription factors hepatocyte nuclear factor 3, HNF3A, XBP1, and GATA 3. This subtype of breast cancer is associated with a good prognosis."