KLK4 and ovarian carcinoma: The family consists of 15 genes, of which 12 (KLK2, KLK3, KLK4, KLK5, KLK6, KLK7, KLK8, KLK10, KLK11, KLK13, KLK14, and KLK15) appear to be overexpressed in ovarian cancer.