FOXP1 and diffuse large B-cell lymphoma: In contrast, the high level of FOXP1 protein expression in DLBCL has been included in immunostain algorithms [43–45], which can be associated with FISH tests [46, 47], or with a reciprocal expression of HIP1R protein to classify DLBCL into molecular subtypes with prognostic value in patients treated with rituximab [48].