Basal-like immune-suppressed TNBC was characterized by large tumor size, high proliferation activity of tumor cells, low density of immune-infiltrating cells in tumor mesenchyma, and high mutation frequency of TP53, PTEN, and RB1. Therefore, we verified the biological function of PKMYT1 in the TNBC cell. This evidence concerns the gene PKMYT1 and neoplasm.