Oncolytic viruses constitute a new promising therapeutic approach for treating cancer. These viruses selectively replicate in tumor cells and effectively kill those cells without harming normal cells. Selectively engineered, the viruses do not only destruct target tumor cells, but they also stimulate the host’s antitumor immune response. Adenoviruses are extensively characterized, well-studied viral vectors that infect both dividing and nondividing cells without the risk of integration into the host genome. Generally causing a mild nature of disease, adenoviruses are considered…