T3wt is a non-pathogenic reovirus showing potential as a cancer therapy, but genetic modifications were made to enhance its infectivity in cancer cells.
Super Virus 5 (SV5), a mutant with five oncolytic mutations, demonstrated the largest plaques in breast cancer cells and led to better tumor reduction and survival rates in treated mice compared to T3wt.
SV5's mechanism of effectiveness hinges on its ability to spread further than T3wt, highlighting the importance of virus spread in enhancing cancer treatment efficacy.