VEGFA and gastric cancer: For example, circSHKBP1 transported by exosomes to gastric cancer cells not only regulates the miR‐582‐3p/HUR/vascular endothelial growth factor (VEGF) axis but also sponges the HSP90 protein and blocks the interaction with STUB1 of HSP90 to inhibit the ubiquitination of HSP90.47