MUC5AC and gastric intestinal type adenocarcinoma: Current research findings suggest that mucin subtypes and clinical relevance are reported differently in the literature, but most of the data always support that different mucin subtypes are associated with the risk of intestinal gastric adenocarcinoma (Ha Kim et al., 2006; Kim et al., 2013; Koseki et al., 2000; Yamazaki et al., 2006).