CA 15-3, CA 27-29, HER2/NEU are biomarkers for Breast cancer, CA 125 Ovarian CEA Colon is a biomarker of cancer, PSA is a biomarker of the Prostate, NMP22, Fibrin/FDP, BTA, high molecular weight CEA are biomarkers for Bladder cancer, α-fetoprotein and Human gonadotropin-β are biomarkers for Testicular cancer, CA 19-9 is a biomarker of Pancreatic cancer. This evidence concerns the gene KLK3 and testicular cancer.