PDCD4 and ovarian cancer: In addition, lncRNA Xist (Wang and Li, 2020), which functions as a ceRNA to positively mediate the expression of PDCD4 (programmed cell death protein 4) through binding to miR-150-5p and is significantly decreased in ovarian cancer tissues and cell lines compared with the normal tissue and cells, inhibits ovarian cancer cell growth and metastasis via regulating miR-150-5p/PDCD4 signaling pathway.