However, there seems to be a potential unique response to androgen (fluoxymesterone) administration as a part of treatment; that may justify identifying apocrine carcinoma as an entity different from usual ductal carcinoma, which was further emphasized by Tsutsumi [3], 2012, by demonstrating androgen receptor positivity, which may lead to different clinical behavior and management protocols. The gene discussed is AR; the disease is apocrine adenocarcinoma.