When the expression of HAGLR and mir-7704 was analyzed in two breast-cancer-derived cell lines (MCF-7 and MDA-MB-231) and a non-tumorigenic cell line (MCF-10A), which are often used as cellular models for breast cancer, negative correlation was found between the expression of HAGLR and mir-7704 [5]. The gene discussed is HAGLR; the disease is breast cancer.