To evaluate which extracellular molecules among those predicted to be activated from the IPA results are potentially able to trigger signaling pathways for elevating FBXL7 expression, we performed a Pearson’s correlation test to estimate the relationships among FBXL7, CD44, HGF, CSF2, PDGFA, PDGFB, PDGFC, and PDGFD transcripts in patients with ovarian serous cystadenocarcinoma using the TCGA database. The gene discussed is PDGFD; the disease is ovarian serous cystadenocarcinoma.