Thirty studies with 1961 patients reported the level of tumor markers including CA125 (8 studies), CEA (20 studies), CA153 (2 studies), AFP (11 studies), AFU (1 study), CA199 (14 studies), CYFR21-1 (2 studies), VEGF (2 studies), CA50 (1 study), and CA724 (1 study). This evidence concerns the gene AFP and neoplasm.