For breast cancer, four tags such as ACGTTAAAGA, AATATGTGGG, AGTCAGCTGG, and TTACGATGAA listed in the Figure 4 are identified to the genes for dermcidin (DCD), cytochrome c oxidase subunit Vic (COX6C), epidermal growth factor receptor pathway substrate 8 (EPS8), and phosphatidylinositol-5-phosphate 4-kinase, type II, beta (PIP4K2B), respectively. This evidence concerns the gene PIP4K2B and breast cancer.