MUC1 serum levels were higher in cancer patients (mean = 2.46 U/mL, SD = 3.46 U/mL) than controls (mean = 0.60 U/mL, SD = 0.69 U/mL); the percentage of individuals over the cut off value (4 U/mL) was 8/53 (15%) vs 2/18 (10.5%), respectively. Here, MUC1 is linked to cancer.