The following search terms were used: (“TA-MUC1” OR “Tumor-associated MUC1” OR “MUC1” OR “Membrane-associated MUC1” OR “MA-MUC”) AND (“case report” OR “case series”) AND (“cancer” OR “carcinoma” OR “adenocarcinoma” OR “neoplasm”). This evidence concerns the gene MUC1 and adenocarcinoma.