After we identified the relationship between the levels of DOK7 and clinical outcomes and prognosis in breast cancer patients, we inquired the mRNA levels of DOK7 in various breast cancer cell lines (MCF-7, SUM-1315, BT474, HCC-1937, T47D, SKBR3, MDA-MB-231) and a human noncancerous cell line (MCF-10A). The gene discussed is DOK7; the disease is breast cancer.