CSF2 and neoplasm: Vaccines comprising autologous cell material can be an alternative for exisiting vaccines based on allogenic tumor cell lines involving GVAX, a granulocyte‐macrophage colony‐stimulating factor(GM‐CSF) gene‐transfected tumor cell vaccine, encountering human leucocyte antigen (HLA) mismatch resulting in an anti‐HLA reponse rather than a tumor antigen‐directed reponse.11