MUC1 and pancreatic adenocarcinoma: Notably, BRCA (Breast invasive carcinoma) and PAAD (Pancreatic adenocarcinoma) express high level of MUC1, yet LUSC (Lung squamous cell carcinoma) and SKCM (Skin Cutaneous Melanoma) barely express MUC1 (Fig. S1A, B).