Although these data were generated in only two serous ovarian cancer cell lines (SKOV-3 and OVCA432) and may not be representative of all serous EOC, they support our own findings here in a serous EOC cohort, and previous reports in ovarian cancer cohorts of mixed histotypes [24], [25], that women with high KLK4 mRNA levels in their tumors had shorter progression free and overall survival time. This evidence concerns the gene KLK4 and ovarian cancer.