KLK4 and prostate cancer: Among all other kallikreins, the following has been reported: prognostic value of KLK4, KLK7, KLK8 and KLK10 in ovarian cancer, diagnostic value of hK6 and hK10 in ovarian cancer and association of KLK10, KLK14 and KLK15 with testicular, breast and prostate cancer (Tanimoto et al, 1999; Underwood et al, 1999; Diamandis et al, 2000b; Yousef et al, 2000b, 2001a,b; Luo et al, 2001a,b; Magklara et al, 2001).