MUC1 and neoplasm: An analysis of the complete cohort shows that MRP2 (HR = 0.39, 95% CI = 0.2172–0.6992, p = 0.0018) and PD-L1 (HR = 0.6, 95% CI = 0.3739–0.9352, p = 0.0267) are associated with a better prognosis, whereas MUC1 expression (HR = 1.66, 95% CI = 1.03–2.751, p = 0.0415) is associated with a poor prognosis for GBC patients, regardless of tumor staging (Figure 4B, right).