Numerous viruses are being developed pre-clinically and clinically. An investigation of all registered clinical trials in 2017 demonstrates 78 interventional trials regarding OVs. This ability for near-universal therapeutic impact in cancer makes OVs a popular therapeutic tool. Today, both preclinical and early-stage clinical trials are intensively investigating the approach to improve oncolytic virotherapy. https://www.creative-biolabs.com/oncolytic-virus/applications-of-oncolytic-viruses-in-cancer-treatment.htm