Before propensity score matching, patients in the CT-alone group had significantly worse baseline characteristics compared to those in the CRT group, with a lower body mass index (mean 20.3 vs. 21.5 kg/m2, p = 0.01), poorer physical performance (ECOG score 2: 8.6% vs. 0%, p = 0.011), greater tumor burden (stage IVb: 65.6% vs. 35.6%, p = 0.000, and distant metastatic sites ≥3: 6.4% vs. 0%, p = 0.001), lower absolute neutrophil count (mean 5.9 vs. 5.1 × 109/l, p = 0.022), and lower albumin level (mean 35.5 vs. 36.7 g/l, p = 0.047). This evidence concerns the gene ALB and neoplasm.