AR and triple-negative breast carcinoma: In current studies on the classification of triple-negative breast cancer, Lehmann et al. (48) identified six TNBC subtypes based on gene expression profiles, including two basal-like subtypes (BL-1 and BL-2), immunomodulatory subtype (IM), mesenchymal subtype (M), mesenchymal stem cell-like subtype (MSL), and luminal/androgen receptor subtype (LAR).