NCIt definition : A vaccine comprise of a canarypox viral vector that carries the gene for human B7.1
(CD80 antigen) with potential use as an autologous therapeutic cancer vaccine. Tumor
cells harvested from a patient are infected with ALVAC-hB7 1, thereby producing an
autologous cell line that exhibits increased expression of HLA class I and class II,
CD54 (ICAM), and CD80. Increased expression of these proteins by this autologous cell
line may activate an antitumor T-cell response when the modified cells are administered
to the patient. (NCI04);