PSEN1 and neoplasm: The expression profiles of ENG, FCER1G, PSEN1, SLAMF6 from HPA (http://www.proteinatlas.org) shown that, ENG, FCER1G, SLAMF6 were not expressed or lowly expressed in tumor and normal tissues; PSEN1 was unexpressed or underexpressed in normal tissues and highly expressed in tumor tissues (Fig. 3C).