KLK7 and ovarian cancer: Many studies have reported that KLK7 is overexpressed in healthy tissue than in tumors of ovarian cancer patients and have linked with the some other diseases [20,21] We first systematically analyzed the expression of KLK7 in different cancers using ONCOMINE, and our results confirmed that KLK7 was overexpressed in ovarian cancer, colorectal cancer and gastric cancer.