JAK1 and neoplasm: The hexatherapy regimen induced robust IFN-γ production in peripheral CD8+ T cells (figures 3D and 4F) and promoted not only vaccine antigen-specific T cells (figures 3E, F and 4I) but also T cells specific for the endogenous retroviral tumor antigen gp70 (p15E and AH1; figures 3G and 4J) and neoepitopes (Jak1 and Ptgfr; figure 3H, I).