The significant prognostic factors for the BCSS included the tumor size (HR: 1.030, 95% CI: 1.004–1.056, p = 0.022), Ki67 (HR: 1.029, 95% CI: 1.008–1.050, p = 0.006), and NPI (HR: 2.803, 95% CI: 1.724–4.558, p < 0.001) (Table 4). The gene discussed is MKI67; the disease is neoplasm.