In univariate analysis (Table 4), eight factors were associated with OS (Wald test): the pathological grade (p = 6.80 × 10−2), axillary lymph node status (p = 2.26 × 10−6), and tumor size (p = 3.77 × 10−3), the Lehmann’s subtypes (p = 1.55 × 10−3), the Immune 28-kinase signature (p = 4.14 × 10−4), the LCK signature (p = 1.37 × 10−4), the Bindea CD8 T-cells signature (p = 2.18 × 10−2), and our 13-gene signature (p = 4.48 × 10−6) with a hazard ratio (HR) for death of 1.88 (95%CI 1.43–2.46) for “high-risk” patients as compared with “low-risk” patients. The gene discussed is CD8A; the disease is neoplasm.