As shown in Fig. 5 A, quantitative reverse transcription PCR (qRT-PCR) confirmed the higher expression of SLC35G6, MUC4, TP53BP2, PDIA4, HDAC1 and MDM2 in most DLBCL cell lines compared with LCL (lymphoblastoid cell lines). The gene discussed is MDM2; the disease is diffuse large B-cell lymphoma.