AR and neoplasm: In 2011, Lehmann et al. categorized TNBC into six subtypes [8]: basal-like 1 (BL1), basal-like 2 (BL2), mesenchymal (M), mesenchymal stem-like (MSL), immunomodulatory (IM), and luminal androgen receptor (LAR), by performing gene expression profiling of tumor samples from 587 TNBC patients [9].