In WHO-HAEM5, tumors with MYC and BCL2 rearrangements are named diffuse large B-cell lymphoma/high-grade B-cell lymphoma with MYC and BCL2 rearrangements (DLBCL/HGBCL MYC/BCL2). The gene discussed is MYC; the disease is B-cell non-Hodgkin lymphoma.