KLK2 and Familial prostate cancer: The list of 10 genes again included the well-established prostate cancer markers KLK2, KLK3 (PSA), FOLH1 (PSMA), PSGR (OR51E2), STEAP2, NKX3.1 and Prostein), and also included NCAM2, SPON2 and HOXB13.