KDR and cancer: Exosomal cargos including RNA, miRNAs, autophagy- and apoptosis-related proteins, integrin, proteases, Na Channel protein, PD-L1, VEGFR2, ctDNA, sRNAs, and DNA were used to diagnose and predict various diseases such as lupus nephritis, sepsis, cancers, Parkinson’s disease, traumatic encephalopathy syndrome, hypertension, renal fibrosis, chronic kidney failure, tuberculosis infection, irritable bowel disease, intracerebral hemorrhage, preeclampsia, epilepsy, vasculitis, systemic autoimmune diseases, and acute ischemic stroke.