CEACAM6 and neoplasm: Proteomic analysis of human bile has identified a number of novel biomarker candidates, amongst them carcinoembryonic antigen-related cellular adhesion molecule 6 (CEACAM6).[11] Subsequent analysis by the same investigators suggested biliary CEACAM6 can differentiate malignant strictures from benign disease with high accuracy, but was limited by small numbers and heterogeneity of its malignant cohort.[12]