The distribution of MUC1 expression, survival status of patients with BC, and expression profiles of MUC1 are shown in Fig. 2B. ROC curve analysis showed that the AUC values of 1, 3, and 5 years were 0.6, 0.634, and 0.634, respectively, indicating that the expression of MUC1 has a potential prognostic ability (Fig. 2C). Here, MUC1 is linked to breast cancer.