DMF treatment induces cytotoxicity in DLBCL. GCB DLBCL (A), ABC DLBCL (B), or myeloid lymphoma/leukemia (C) cell lines were treated daily with solvent or 20 μM DMF. Cell numbers were determined as indicated and normalized to the solvent control. Error bars correspond to the mean ± standard deviation. Data are representative of ≥3 independent experiments.