IRF4 and lymphoid neoplasm: Subsequent studies have demonstrated that IRF4 is highly expressed in various types of both B-lymphoid and T-lymphoid neoplasms, including multiple myeloma (MM) [9,54,55,56,57,58,59,60], diffuse large B-cell lymphoma (DLBCL) [61,62,63,64,65,66,67,68,69,70], Burkitt’s lymphoma (BL) [71,72], follicular lymphoma (FL) [61,73,74], anaplastic large-cell leukemia (ALCL) [75,76,77,78,79,80,81], adult T-cell leukemia/lymphoma (ATL) [10,82,83,84,85,86,87,88,89], and mycosis fungoides (MF) [75,77].