Next, with the aid of Kaplan–Meier plotter tool, we performed survival data analysis, finding that higher expression DLGAP5 was connected with poorer OS (P < 0.001), DMFS (Distant metastasis-free survival) (P < 0.001) and RFS (Relapse-free survival) (P < 0.001) prognosis in breast cancer (Additional file 5: Figure S5a). The gene discussed is DLGAP5; the disease is breast cancer.