Inversely, lower expression level of MUC1 was correlated to better OS (HR = 1.62, 95% CI = 1.35–1.94, p = 2.4e-07), FP (HR = 1.61, 95% CI = 1.31–1.99, p = 6.9e-06) and PPS (HR = 2.08, 95% CI = 1.65–2.62, p = 3.1e-10) in all GC patients (Fig 2D–2F). Here, MUC1 is linked to gastric cancer.