Aberrant glycosylation of MUC5AC has also been studied in pancreatic cancer (with various techniques including immunohistochemistry, mass spectrometry, and serum ELISA) where certain variants of MUC5AC are associated with malignant transformation and promotion of carcinogenesis [60,61,62,63,64,65]. The gene discussed is MUC5AC; the disease is familial pancreatic carcinoma.