A study of pancreatic cancer showed that circRNA-FOXK2 is significantly overexpressed in pancreatic cancer cells and tissues and can act as a sponge for miR-942, thereby promoting the expression of ANK1, GDNF, and PAX6, which in turn promote cell growth and migration via cell cycle progression and apoptosis. The gene discussed is GDNF; the disease is pancreatic neoplasm.