On immunohistochemistry tumor cells appeared positive for β-human chorionic gonadotrophin (β-hCG) (Figure 3) and cytokeratins (AE-1, AE-2) and negative for octamer binding transcription factor (OCT)-3/4, α-fetoprotein (AFP) and CD-30. The gene discussed is TNFRSF8; the disease is neoplasm.