IRF4 and cMYC mRNA expression are inhibited in patient-derived MM PCs upon treatment with BETi. Real-time PCR analysis of total mRNA obtained from purified CD138+ cells untreated or treated with I-BET151 for 48 h in complete medium supplemented with 20 ng/ml IL-3 and 2 ng/ml IL-6. Data, expressed as fold change units, were normalized with GAPDH and referred to the untreated cells considered as calibrator. (TIF 4030 kb)