Consequently, we evaluated their mRNA expression by real‐time PCR and discovered PDGFRβ mRNA levels to be the most elevated in AS‐OV cells and significantly increased in ovarian cancer ascites compared to those of nonovarian cancerous ascites samples, such as colorectal cancer (CRC)‐derived ascites (Fig. 1D). The gene discussed is PDGFRB; the disease is ovarian cancer.