Programmed death-ligand 1 (PD-L1): High expression of PD-L1 is frequently observed in EBV-associated lymphomas, particularly cHL and ENKTL, often driven by EBV-mediated signaling (e.g., LMP1 activation of JAK/STAT) (20, 21). The gene discussed is SOAT1; the disease is classic Hodgkin lymphoma.