CEACAM5 and neoplasm: For TNBC patients, the negative correlation of pre-therapeutic CEA (HR: 2.293; 95% CI: 1.377–3.816; P = 0.001) and CA15-3 (HR: 2.627; 95% CI: 1.759–3.923; P < 0.001) levels with OS were significant, along with other parameters, such as the tumor status, N status, TNM staging, and histological grade, in the univariate analysis (Table 2).