MUM1(multiple myeloma oncogene-1) also known as IRF4(interferon regulatory factor 4) is a member of the interferon regulatory factor family and has been suggested as a potential therapeutic target in Peripheral T-cell lymphoma (PTCL) due to its expression in T-cell lymphoma [37, 38]. The gene discussed is IRF4; the disease is peripheral T-cell lymphoma, not otherwise specified.