Using the TCGA RNA-seq data set for ovarian cancer (https://www.proteinatlas.org/), we also analyzed whether there are any indications for coordinate expression of KLK4 and members of the plasminogen activation system, including the KLK4 substrates uPA and uPAR [42] as well as PAI-1. This evidence concerns the gene KLK4 and ovarian carcinoma.