In this study, Nek9 is highly expressed in breast cancer patients and is closely related to breast cancer development, lymphatic metastasis, and TNM staging, suggesting that Nek9, as an essential substance for cell mitosis and maintenance of normal proliferation, can be activated and phosphorylated in cell mitosis to combine with Nek6 and 7 [14]. The gene discussed is NEK6; the disease is breast cancer.