NCIt definition : A recombinant vaccinia virus encoding carcinoembryonic antigen (CEA). CEA is overexpressed
in several cancer cell types, including gastrointestinal, breast, and non-small cell
lung cancers. Attenuated vaccinia virus is a highly effective immunizing agent that
evokes both humoral and cell-mediated responses. Vaccination with this agent may evoke
a cytotoxic immune response to CEA-expressing cells. (NCI04);