RANGAP1 and gastric cancer: Similarly, Gastric cancer (GC)-derived exosomal short hairpin kinesin-binding protein circRNA (circshKBP) (63) and Ran guanosine triphosphatase-activating protein 1 circRNA (circ-RanGAP1) (64) have also been reported to act as specific miRNA sponges to promote neovascularization.