Recently, the development of molecular biotechnology allows modifications of viral genomes genetically and optimizes the transformation of available viruses with weak pathogenicity. These methods are used to enhance the oncolytic effect and reduce adverse reactions to maximize both efficacy and safety. Indeed, the oncolytic virus can stimulate a pro-inflammatory tumor environment by enhancing antigen recognition and robust immune responses. It overcomes the immune evasiveness and escape of malignant cells to eliminate the tumor cells. https://www.creative-biolabs.com/oncolytic-virus/definition-of-an-oncolytic-virus.htm