Other mass spectrometric studies of pancreatic juice have found CEA, S100A6, S100A8, S100A9, and S100P to be differentially regulated between pancreatic cancer and benign conditions (Chen et al., 2014; Mori et al., 2013; Ohuchida et al., 2005). This evidence concerns the gene S100A6 and familial pancreatic carcinoma.