Further, it indicates that the mechanism whereby APF inhibits bladder carcinoma cell proliferation via CKAP4 involves the regulation of phosphorylation (with activation or inactivation) of various cell signaling molecules including Akt, GSK3β, β-catenin, along with mRNA and protein expression of p53 and MMP2. This evidence concerns the gene CKAP4 and urinary bladder carcinoma.