His tumor marker levels were carcinoembryonic antigen (CEA), 81.5 ng/ml; carbohydrate antigen (CA) 19-9, 28 U/ml; α-fetoprotein (AFP), 5.0 ng/ml; and protein induced by vitamin K absence or antagonists-II (PIVKA-II), 14 mAU/m. This evidence concerns the gene CEACAM5 and neoplasm.