The pattern of EBV gene expression can be classified into three types: latency I, characterized by the expression of EBNA1, EBERs, and BARTs, is seen in Burkitt lymphoma and gastric carcinoma (some gastric carcinomas express LMP2 in addition); latency II, characterized by the expression of EBNA1, LMP1, LMP2A, EBERs, and BARTs, is found in CAEBV, Hodgkin lymphoma, and nasopharyngeal carcinoma; latency III, characterized by the expression of all nine EBV proteins and two sets of EBV RNAs expressed in LCLs, is seen in PTLD and AIDS-associated lymphoma [67]. The gene discussed is PSMB9; the disease is gastric carcinoma.