High level of PRDM1α mRNA relative to plasma cell myeloma and tonsil was detected in 9 EN-NK/T-NT cases (#3, 6, 7, 8, 10, 11, 14, 15, and 16) by qRT-PCR, but the percentage of PRDM1 positive tumor cells was low or absent in IHC, indicating that the degree of PRDM1 transcript did not translate to the same extent as PRDM1 protein. This evidence concerns the gene PRDM1 and neoplasm.