Immunohistochemistry (IHC) demonstrated that the tumor cells expressed CK7, GATA3, and androgen receptor, with focal GCDFP-15 expression, and no staining for HER2, estrogen receptor, mammaglobin, TTF-1, CDX2, p40, as well as melanocytic and neuroendocrine markers; an intraductal component was not demonstrated by p63 IHC. The gene discussed is AR; the disease is neoplasm.