Of those 24 upregulated genes, five separate/unique FBJ osteosarcoma viral oncogenes (specifically, FOSB and the truncated splice form Δfosb2) belonging to the eight most highly differentially expressed genes (log fold change = 3.58 to 7.78) were found at t1 for VGII R265 only. The gene discussed is FOSB; the disease is osteosarcoma.