BCL2 and diffuse large B-cell lymphoma: BCL2 translocations to immunoglobulin genes (IG), t (14;18) (q32; q21), t (2;18) (p11; q21) and t (18;22) (q21; q11), involving the IgH, IgK and IgL loci, respectively, are present in 20–25% of DLBCL, almost exclusively of the GCB subtype [32].